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blood Generalization and consolidation Khannanova Valentina Nikolaevna MBOU "School No. 62", Kazanslide 2
Blood - the internal environment of the body, formed by liquid connective tissue. It consists of plasma and formed elements: leukocyte cells and postcellular structures (erythrocytes and platelets). Average, mass fraction blood to the total body weight of a person is 6.5-7%
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Do you know?: The power of the human heart is not more than 0.8 W; The human heart pumps 30 tons of blood per day; Period of blood circulation big circle blood circulation 21s, and in small - 7s. Consider why this is possible. Why does this logical paradox not contradict the laws of physics?
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Blood plasma contains water and substances dissolved in it - albumin proteins, globulins and fibrinogen. About 85% of plasma is water. inorganic substances make up about 2-3%; these are cations (Na+, K+, Mg2+, Ca2+) and anions (HCO3-, Cl-, PO43-, SO42-). organic matter(about 9%) proteins, amino acids, urea, creatinine, ammonia, glucose, fatty acid, pyruvate, lactate, phospholipids, triacylglycerols, cholesterol. Blood plasma also contains oxygen gases, carbon dioxide and biologically active substances hormones, vitamins, enzymes, mediators
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Erythrocytes (red blood cells) are the most numerous of the formed elements. Mature erythrocytes do not contain a nucleus and are shaped like biconcave discs. Red blood cells contain an iron-containing protein called hemoglobin. It provides the main function of erythrocytes - the transport of gases, primarily oxygen.
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Platelets (platelets) are fragments of the cytoplasm of giant cells limited by a cell membrane. Together with blood plasma proteins (for example, fibrinogen), they provide clotting of blood flowing from a damaged vessel.
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Leukocytes are white blood cells; heterogeneous group of different appearance and functions of human or animal blood cells, isolated on the basis of the absence of self-staining and the presence of a nucleus.
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Answer the questions and fill in the crossword puzzle Vertically: Formed element of blood providing gas exchange. The liquid part of the blood that is not related to the formed elements. Part of the cell that is missing from red blood cells and platelets. Horizontally: Shaped element responsible for the body's immunity. A shaped element that begins to work with injuries and wounds. She is liquid, but refers to connective tissue. A vital gas that carries red blood cells.
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Mechnikov Ilya Ilyich (1845-1916) An outstanding Russian scientist who laid the foundation for many important areas in biology and medicine. The author of the famous phagocytic theory of immunity, for which he, the first Russian biologist, was awarded Nobel Prize. II Mechnikov created the theory of inflammation as a protective reaction of the body in the fight against disease. He founded the first Russian bacteriological station. The name of I.I. Mechnikov is world famous.
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Formed elements Formed elements Cell structure Place of formation Duration. functioning Place of death Contents. in 1 mm3 of blood Functions Erythrocytes Red blood cells Non-nuclear cells Red bone marrow 3-4 months. Liver, spleen 4.5-5 million. Pigment hemoglobin forms unstable compounds with O2 and CO2 and transports them. Leukocytes White blood amoeba-like cells with a nucleus. Red bone marrow, spleen, The lymph nodes. 3-5 days Liver, spleen, and also places where it goes inflammatory process 6-8 thousand Protection of the body from pathogenic microbes by phagocytosis. They produce antibodies to create immunity. Platelets Blood platelets Red bone marrow 2-5 days Liver, spleen. 300-500 thousand. Participate in blood clotting when a blood vessel is damaged, contributing to the conversion of fibrinogen protein into fibrin - a fibrous blood clot.
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Blood is an amazing fluid. Since ancient times, it has been attributed mighty force. Ancient priests sacrificed it to their gods, people sealed their oaths with blood... Blood is a special type of connective tissue, cells are located far from each other, there is a lot of intercellular substance.
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Functions of the blood. Nutrient Respiratory Humoral Excretory Protective Thermoregulatory Homeostatic
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Plasma. Inorganic substances: Organic substances: proteins Glucose Fats Carbohydrates Hormones Degradation products vitamins Salts of sodium, potassium, calcium: water
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Erythrocyte hemoglobin Erythrocytes, or red blood cells, are clearly visible under a microscope in a drop of fresh blood. There are many of them, so they are clearly visible: in 1 mm3 - 4.5 - 5.5 million red blood cells. These are small non-nuclear cells of a biconcave shape. This form significantly increases the surface of red blood cells. Reddish color is given to red blood cells by a special protein - hemoglobin. Thanks to him, erythrocytes perform respiratory function blood: hemoglobin easily combines with oxygen and just as easily gives it away. Red blood cells are also involved in the removal of carbon dioxide from tissues. Red blood cells are produced in the red bone marrow. Their age is short - 100-120 days. Every day, up to 300 billion new erythrocytes are formed instead of the dead.
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Blood transfusion. Blood groups. Blood transfusion cures many diseases. At the beginning of the 20th century, blood types were discovered. Since that time, it has become possible to correctly select a donor - a person who gives his blood for transfusion. When transfusing blood, it is necessary that the blood type of the donor and the recipient - the person receiving part of the blood - be compatible. In 1901, the Austrian researcher K. Landsteiner investigated the problem of blood compatibility during transfusion. Mixing erythrocytes with blood serum in the experiment, he found that with some combinations of serum and erythrocytes, an agglutination reaction (gluing) of erythrocytes is observed, while others do not. The process of agglutination occurs as a result of the interaction of certain proteins: antigens present in erythrocytes - agglutinogens and antibodies contained in plasma - agglutinins. Upon further study of the blood, it turned out that the main agglutinogens of erythrocytes were agglutinogens A and B, and in the blood plasma - agglutinins a and b. There are 4 blood groups.
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Leukocyte Leukocytes (white blood cells; from leuko ... and Greek kytos - receptacle, here - cell), colorless blood cells of humans and animals. All types of leukocytes (lymphocytes, monocytes, basophils, eosinophils and neutrophils) are spherical in shape, have a nucleus and are capable of active amoeboid movement. White blood cells play an important role in protecting the body from disease by producing antibodies and engulfing bacteria. 1 micron of blood normally contains 4-9 thousand leukocytes. The number of leukocytes in human blood is subject to fluctuations: it rises towards the end of the day, with physical activity, emotional stress, protein intake, a sharp change in temperature environment. There are two main groups of leukocytes - granulocytes (granular leukocytes) and agranulocytes (non-granular leukocytes). Granulocytes are subdivided into neutrophils, eosinophils and basophils. All granulocytes have a lobed nucleus and granular cytoplasm. Agranulocytes are divided into two main types: monocytes and lymphocytes.
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Platelet Platelets (platelets) are small non-nuclear formations, 1 mm3 contains up to 400,000 of them. Their life expectancy is 5-7 days. They are formed in the red bone marrow. The main function is associated with the process of blood clotting.
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Blood clotting. damage (Platelets are destroyed) THROMBOPLASTIN prothrombin thrombin fibrinogen fibrin thrombus + blood cells Blood clotting is a protective reaction of the body that prevents blood loss and the penetration of pathogens into the body.
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Immunity Immunity is the body's ability to protect itself from pathogens and viruses, as well as from foreign bodies and substances. It is of several types. Natural immunity is developed as a result of past illnesses or is inherited from parents to children (such immunity is called innate). Artificial (acquired) immunity occurs as a result of the introduction of ready-made antibodies into the body. This happens when a sick person is injected with the blood serum of people who have been ill or animals. You can get artificial immunity with the introduction of vaccines - cultures of weakened microbes. In this case, the body is actively involved in the production of its own antibodies. Such immunity remains for many years.
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Test 1). Non-nuclear blood cells containing hemoglobin - Leukocytes Erythrocytes Platelets
Blood
Slides: 17 Words: 446 Sounds: 0 Effects: 91Blood. The composition of the blood. Plasma (intercellular substance). Formed elements: erythrocytes, leukocytes, platelets. Formed elements of blood. Erythrocytes. Leukocytes. platelets. Blood functions: Regulation of homeostasis Transport Regulation of body temperature Protective Humoral regulation. The meaning of blood. "Breadwinner". Activity Regulator. "Defender". "Air conditioner". "Keeper of foundations". An adult has 4-5 liters of blood. BLOOD COMPOSITION: The main function of erythrocytes and hemoglobin is to carry oxygen from the lungs to other organs. By attaching oxygen, hemoglobin turns from bluish to scarlet. Immunity. Natural. - Blood.ppt
Blood lesson
Slides: 15 Words: 591 Sounds: 0 Effects: 47Lesson plan. Terminological warm-up “Finish the phrase” Lesson topic Summing up. Saline. platelets. fibrinogen. Thrombus. Rh factor. Fibrin. Serum. Donor. Recipient. "Finish the sentence." Option 1 When wounded at the site of injury, the vessel accumulates and collapses……….. Blood plasma without fibrinogen is called………… The second blood group can be transfused to …………… The person to whom blood is transfused is called……….. Option 2 When a blood clot forms, the soluble protein fibrinogen turns into……… Blood cells get stuck in the fibrin network and form……… In addition to the blood type, for a successful transfusion, it is necessary to take into account……….. - Blood lesson.ppt
Blood Grade 8
Slides: 12 Words: 255 Sounds: 0 Effects: 2Think! But millions of ships leave the harbors again to sail. Basic concepts of the lesson: Plasma; Serum; Thrombus; Fibrin; fibrinogen; Phagocytosis; blood clotting; Hemoglobin molecule. Scheme of oxygen transport by hemoglobin. Hb - hemoglobin hb+o2 hbo2 hbo2 hb+o2 hbco2 hb + CO2 hb + CO2 hbco2. Leukocytes. Phagocytosis is the process of absorption and digestion of microbes and other foreign substances by leukocytes. Mechnikov Ilya Ilyich 1845-1916 The quantitative composition of the blood. erythrocytes; 1 cubic mm - 6000 - 8000 leukocytes; 1 cu. - Blood Grade 8.ppt
Biology Blood
Slides: 19 Words: 474 Sounds: 0 Effects: 53What is blood
Slides: 5 Words: 144 Sounds: 4 Effects: 28What is blood? Leukocytes. Leukocytes are white and colorless cells that fight microorganisms, pathogens. Erythrocytes. Erythrocytes are red cells that carry oxygen and carbon dioxide. platelets. - What is blood.pptx
Blood in the body
Slides: 18 Words: 337 Sounds: 0 Effects: 0Blood. Composition, structure, functions. What is blood? The composition of the blood. Who is more important? Leukocyte exclaimed! The platelet sighed... Blood is the mirror of the body. Everything is relative. The composition of the internal environment of the body. Testing. What is blood? In the red kingdom once there was a dispute, who is more important? Leukocyte exclaimed. "I devour pathogenic microbes»-phagocytosis- absorption and digestion of microbes and foreign substances. The platelet sighed. Answer. 1. Red blood cells are involved. 2. Which of the functions of the blood is not performed by plasma. 3. The platelet performs the following functions: 4. The phenomenon of phagocytosis discovered: - Blood in the body.ppt
Blood as the internal environment of the body
Slides: 11 Words: 305 Sounds: 0 Effects: 0Blood as a component of the internal environment of the body. Internal environment. The internal environment of the body. The human circulatory system. blood plasma. Erythrocytes. Characteristics of blood groups. Blood transfusion. Leukocytes. platelets. Blood clotting. - Blood as the internal environment of the body.ppt
Blood Information
Slides: 11 Words: 710 Sounds: 0 Effects: 115Blood. Blood movement. The movement of blood through blood vessels. Explain the drawing. The speed of blood flow. We do training. Admission to the emergency room. type of bleeding. What is shown in the picture. Vaccine. Heart attack. - Blood Information.ppt
human blood
Slides: 10 Words: 311 Sounds: 0 Effects: 0Presentation for a biology lesson on the topic: "Immunity" Grade 8. Methods of entry of microorganisms and viruses into the body. Aquatic Airborne With food In contact with animals and plants. Special mechanisms that prevent the penetration of microbes. Natural immunity (innate) is produced as a result of past diseases and is inherited. Blood transfusion. 1638 - the ancient Greeks tried to save the warriors. 1667 - a lamb's blood was transfused to a sick young man. 1819 - Eng. doctor J. Blundell - blood transfusion from person to person. 1832 - G. Wolf saved a woman dying after childbirth. - Human blood.ppt
Human's blood
Slides: 17 Words: 948 Sounds: 0 Effects: 0Internal environment. 1 - blood capillary 2 - tissue fluid 3 - lymphatic capillary 4 - cell. Blood: composition and meaning. Homeostasis. Carried out in the kidneys. Removal of waste products of the metabolic process - isolation. It is carried out by exocrine organs - kidneys, lungs, sweat glands. Body temperature regulation. Lowering the temperature through sweating, a variety of thermoregulatory reactions. Regulation of blood glucose levels. It is mainly carried out by the liver, insulin and glucagon secreted by the pancreas. regulation of homeostasis. Thermoregulation is another example of negative feedback. - Human blood.ppt
Composition of the blood
Slides: 15 Words: 542 Sounds: 0 Effects: 11The internal environment of the body. Lesson goals. Blood. tissue fluid. Lymph. Fig.1 - The internal environment of the body. Homeostasis-. The property of living organisms to maintain the constancy of the internal environment of the body. Respiratory nutrient excretory thermoregulatory protective humoral. The meaning of blood. The composition of the blood. Fig. 2 - The composition of the blood. Plasma 60%. Uniforms 40%. Erythrocytes. Leukocytes. Platelets, or platelets. Rice. 3 - The composition of the blood. blood plasma. inorganic substances. organic matter. Water. mineral salts 0.9%. Squirrels. Glucose. Vitamins. fatty substances. decay products. - Composition of blood.pps
Composition of human blood
Slides: 15 Words: 560 Sounds: 0 Effects: 0Composition and functions of blood. Blood. The volume of blood. The composition of the blood. Plasma functions. Formed elements of blood. Erythrocytes. Leukocytes. Ilya Ilyich Mechnikov. platelets. Blood clotting. thrombus formation. Laboratory work. Functions of the blood. Homework. - Composition of human blood.ppt
Composition and functions of blood
Slides: 29 Words: 538 Sounds: 0 Effects: 29The meaning of blood and its composition. The internal environment of the body. Internal environment. The term "internal environment". Homeostasis. Dictionary. Protective functions. transport function. Blood clotting. The body's ability to eliminate antigens. homeostatic function. Blood. Plasma. blood plasma. Name. Erythrocytes. Leukocytes. Composition and functions of blood. Phagocytosis. platelets. Blood clotting. Benefits of human erythrocyte. Frog blood. Human blood. Composition and functions of blood. The human erythrocyte is different from the frog erythrocyte. Homework. Composition and functions of blood. Used Internet resources. - Composition and functions of blood.ppt
Physiology of blood
Slides: 33 Words: 628 Sounds: 0 Effects: 0Physiology of blood. Functions of the blood. Blood volume. The composition of the blood. hematocrit. Formed elements of blood. Erythrocytes. The main functions of erythrocytes. Types of leukocytes. Functions of leukocytes. Leukocytes. Neutrophilic leukocytes. Young neutrophil. stab neutrophil. segmented neutrophil. Functions of neutrophils. Eosinophil. Functions of eosinophils. Basophil. Functions of basophils. Agranulocytes. Monocyte. Functions of monocytes. Lymphocyte. Functions of lymphocytes. Types of lymphocytes. T-lymphocytes. Physiology of blood. B-lymphocytes. Physiology of blood. humoral immunity. Cellular immunity. platelets. - Blood Physiology.ppt
Physiology of the blood system
Slides: 55 Words: 3461 Sounds: 0 Effects: 0Physiology of the blood system. The concept of the blood system. Hematopoietic organs. Blood. Functions of the blood. Form elements. Plasma. Plasma proteins. Buffer systems blood. protein buffer. Functions of erythrocytes. respiratory pigments. The structure of hemoglobin. Types of erythrocyte hemolysis. Osmotic resistance of erythrocytes. Hematocrit. Sedimentation rate of erythrocytes. Functions of leukocytes. The number of leukocytes and their changes. Causes of physiological leukocytosis. Leukocytopoiesis. regulation of leukopoiesis. Functional features neutrophils. Functional features of eosinophils. Functional features of basophilic granulocytes. - Physiology of the blood system.ppt
Blood pressure
Slides: 7 Words: 621 Sounds: 0 Effects: 0Blood pressure. Arterial pressure. Blood pressure is one of the most important parameters characterizing the work circulatory system. In the same way, the pressure in the large veins and in the right atrium differs slightly. Measurement procedure blood pressure. The most easy to measure blood pressure. - Blood pressure.ppt
Blood pressure in the vessels
Slides: 19 Words: 1379 Sounds: 0 Effects: 70Blood pressure in the vessels. Blood pressure. pressure in the aorta. Vessel. Low blood pressure. Blood pressure in the veins. The volume of circulating blood. Maximum blood pressure. Self-regulation blood pressure. Blood pressure. The mechanism of self-regulation. Pulse. arterial pulse. Pressure measurement. Work with a notebook. Repetition. Leather. Sound wave. Lactic acid. - Blood pressure in vessels.ppt
Arterial pressure
Slides: 16 Words: 384 Sounds: 0 Effects: 47Arterial pressure. Measurement of blood pressure. Questions learning topic. Objective of the project. Research methods. Atmosphere pressure. The division value of an aneroid barometer. Experiment. What is blood pressure. Measurement methods. Blood pressure monitoring. Tatiana. What affects blood pressure. Blood pressure indicators. Sources. Thank you for your attention. - Blood pressure.ppt
Blood type
Slides: 29 Words: 798 Sounds: 0 Effects: 60"Four blood types - four dossiers on humanity." Purpose: Tasks: To theoretically substantiate the belonging of a person to four blood groups. O.E. Mandelstam. Where did that come from?! Blood map. The voice of the ancestors. Blood groups and diseases. The oldest is group I (00). II (AO, AA) appeared later, presumably in the Middle East. The menu and living conditions have changed - so a genetic mutation has occurred. Group III (BB, VO) originated in Central Asia. IV (AB) - the youngest. Appeared only, maybe one or two thousand years ago. Obviously, as a result of the sexual activity of nomads. - Blood type.ppt
Blood and blood types
Slides: 36 Words: 2250 Sounds: 0 Effects: 48Blood groups. Vocabulary work. Blood and blood types. Problem. The science of blood types. Blood transfusion. Human blood type. Blood groups according to protein content. Genetic fingerprints. Scheme of the express method. Scheme of the express method for determining the blood group. Scheme of blood transfusion. Transfusion. Distribution map of owners. Donation. Valuable medicine. World Blood Donor Day. Capable citizen. voluntary act. Blood donor. full dose. Saved life. Factor. Rh factor. Rhesus conflict. Tasks. Blood groups modern world. The history of the evolution of blood groups. - Blood and blood types.pptx
Human blood groups
Slides: 11 Words: 1053 Sounds: 0 Effects: 0Blood types in the modern world. Introduction. The history of the evolution of blood groups. III blood group belongs to the "nomads". Finally, the youngest is the IV blood group. Blood group and personality. One of the studies of Russian scientists: Group I. Strive to be a leader, purposeful. They know how to choose the direction to move forward. They believe in themselves, they are not devoid of emotionality. II group. They love harmony, peace and order. Work well with other people. III group. Easily adapts to everything, flexible, does not suffer from a lack of imagination. IV group. Blood group and food preferences. - Human blood groups.ppt
Blood donation
Slides: 52 Words: 1167 Sounds: 0 Effects: 0Scientific directions. Donation of plasma, blood cells and bone marrow. Factors negatively affecting the state of the donor movement. Changing the structure of donor staff. The main questions of the questionnaire (analyzed 1423 questionnaires, which included 39 questions). Age composition of donors. Social composition donors. Regularity of participation in donation. Prevalence bad habits among donors. Donor assessment of their nutrition. Motives that prompted to become a donor (%). Reasons for not participating in donation. The attitude of the administration to donation. The effectiveness of donation advocacy. Conclusions based on the results of a sociological survey. - Blood donation.ppt
Blood transfusion
Slides: 18 Words: 38 Sounds: 0 Effects: 0Blood transfusion. Story. 1628 - English physician William Harvey makes a discovery about blood circulation in human body. But in the next ten years, transfusions from animals to humans were prohibited by law due to severe negative reactions. 1818 - James Blundell, a British obstetrician, performs the first successful transfusion of human blood on a patient with postpartum hemorrhage. Between 1825 and 1830, Blundell performed 10 transfusions, five of which helped patients. Blundell published his results and also invented the first handy instruments for taking and transfusing blood. - Blood transfusion.ppt
First aid for bleeding
Slides: 8 Words: 236 Sounds: 0 Effects: 0Types of bleeding. First aid for bleeding. Capillary For small cuts; blood oozes slowly from the wound. Venous Blood dark cherry color. Flows from the wound in a stream. Arterial Blood of bright scarlet color. It shoots out of the wound like a fountain. First aid for capillary bleeding. Disinfect the wound Apply a sterile dressing. First aid for venous bleeding. Disinfect the skin around the wound. Apply a sterile pressure bandage. Give painkillers. Take to hospital. First aid for arterial bleeding. Harness rules. A fabric must be placed under the tourniquet. -
“The internal environment of the body. Blood» Grade 8
Target: create conditions for the formation of knowledge about the internal environment of the body; to acquaint students with the composition of blood and the functions of its components; continue the formation of skills to compare, draw conclusions based on comparison; make tables, diagrams; show the connection of the studied material with life; show blood test value like the most important indicator health.
Equipment: textbook (pp. 127-135), workbook, electronic supplement to the lesson “The internal environment of the body. Blood"; projector, computer, interactive whiteboard.
During the classes
1. Organizational moment.
2. Learning new material. (Slide #1)
▪ Introductory conversation.
- What is Wednesday?
What environment is our body in?
- In what environment do the cells of our body exist?
- So: the internal environment is liquid.
▪ Let's get acquainted with the definition of the concept of the internal environment of the body. Recall: what is homeostasis? (Slide #2)
- What are the components of the internal environment of our body? Using the text of the textbook and the slide, students name the components of the internal environment. (Slide #3)
- Where are these components located?
1. Tissue fluid - between cells;
2. Lymph - in lymphatic vessels;
3. Blood - in the blood vessels.
(animation on slide 2).
- Which component do you consider the most important? (student answers).
- There is an expression "Blood is the river of life" how can you explain the meaning of this expression? (student answers).
- Consider these facts:
1. A person wounded in the leg or arm dies from a large loss of blood, even if all internal organs whole and healthy.
2. Transfusion of the blood of another person to the wounded saves him from death. (Slide number 4)
▪ During the conversation, students formulate the conclusion that blood is the most important fluid of the body.
- "Blood" and "Life" - words are synonyms. Blood was animated and idolized. They swore blood in brotherhood, friendship and love. There are such expressions as "Blood for blood", "Blood brothers".
▪ Viewing a video clip of how human blood looks under a microscope immediately after sampling. (Slide number 5)
▪ With the help of a video fragment, we highlight what functions the blood performs. (Slide number 6)
▪ Students name the functions of blood, perform in workbook task number 1 .
▪Checking the task on the slide. (Slide number 7)
▪With the help of the reference notes, students once again repeat and summarize the functions of the blood. (Slide number 8)
- Who knows how much blood is in the human body? (Slide number 9)
- Blood performs many functions, which means that its structure must be complex, what blood consists of.
▪ The study of the composition of the blood.
-When defending the blood, or centrifugation, the blood is divided into layers. (Slide number 10)
Name the fractions into which blood is divided.
▪ Students draw up a diagram of the composition of the blood. (task number 2 in the workbook) , checking the task by slide number 11.
- The first component is blood plasma.
The study of the composition of blood plasma. (Slide number 12)
▪ The study of the formed elements of the blood. Watching the video fragment "Formal elements of blood". (Slide number 13)
- So, the first shaped element are red blood cells, erythrocytes. (Slide number 15)
- Watch a video about how red blood cells move through the vessels. (Slide number 16)
What allows red blood cells to move through the blood vessels? Due to what property can they pass through the narrowest vessels? (Student answers).
- Where are erythrocytes formed? (Slide number 17)
▪ During the conversation, students find out that the structure of erythrocytes ideally corresponds to the function they perform. (Slide number 18)
How do red blood cells take up oxygen?
▪ Introduction to hemoglobin. short information about anemia and foods that are rich in iron.
(Slide number 19)
- What do we call a bruise? How is it formed? (Slide number 20)
▪After that, students are given a little more time and the results of filling out the table on red blood cells are checked.
- The next formed element of blood is leukocytes . Let's watch a short video about what leukocytes look like under a microscope. (Slide number 21)
▪ Acquaintance with leukocytes, features of their structure and functions . (Slide number 22)
- Who can answer the question, where in our body leukocytes are formed? Viewing a video clip. (Slide number 23)
- So, we already know that the scope of leukocytes is protection, let's see how it happens. (Slide number 24)
▪ Acquaintance with the phenomenon of phagocytosis, the history of its discovery . (Slide number 25, 26).
▪ Acquaintance with platelets, features of their structure and functions. (Slide number 27)
- What is the main function of platelets, let's see how it happens. (Slide #28-29)
- And now let's try to restore the correct sequence of the blood coagulation process using an interactive diagram (one student completes a task for interactive whiteboard, by dragging labels, the rest help). (Slide number 30)
▪ Performing a small virtual laboratory work "Microscopic structure of blood" (Slide number 31)
If there are computers in the classroom, all students can complete a similar lab using the site.
- How do you understand the expression "Blood is a mirror of health"? (student answers).
The composition of the blood is important characteristic state of the body. Who has never taken a blood test? What is a blood test? (Slide number 32)
- Let's get acquainted with the norms of some indicators general analysis blood. (Slide number 33)
▪ The students are then given a blood test. Using normal values some indicators of a blood test, students determine whether the patient whose blood test they examined is sick, what abnormalities they have identified.
- Look at the animation, what process are you watching? (student answers) (Slide number 35-36)
3. The results of the lesson.
When conducting a lesson, it is not necessary to use all the proposed material. You can adapt it depending on the conditions, time, you can use it partially.
The electronic application is demonstrated on an interactive whiteboard, which allows the teacher to concentrate the attention of students while standing at the whiteboard, rather than sitting at the computer. Laboratory work and simulators are also performed by students on an interactive whiteboard, which is more visual.
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