10th form Test No 2 Biology

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    1. What are the differences between erythrocytes, leucocytes and thrombocytes?
    Describe at least three important characteristic features (= Merkmale) and compare the function of these blood cells. (4 cr)

    2. Why can 't a person with blood group AB give blood to a seriously injured person with blood group A? Prove your point by showing what happens when such a transfusion is made. ( 3 cr)

    3. a. Label the following section through the human heart and the blood vessels and draw arrows to show the route of the blood. (4 cr)

b. What makes the blood travel in the correct direction through the heart after the contraction of the ventricles?(2 cr)

c. What is a heart attack? Describe the cause(s) of a heart attack and name some factors which increase the risk of a heart attack. (2 cr)

4. a. What difference in the rhesus factor between the mother and the baby becomes dangerous for the baby? (1 cr)

b. Why is only the second baby affected? What can be done to prevent the birth of socalled "rhesus babies"? (2 cr)

5. What do arteries in contrast to veins look like ? Describe their structure and say why it is completely different?(3 cr)

6. a. Label the following diagram of the respiratory organs and explain the function of the ciliated mucous membrane in the windpipe and bronchi? (4 cr)

b. Explain the mechanisms by which air is sucked in and pushed out of the lungs when you exercise? (3 cr)

 

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