D. Hildbrand

Bericht zum bilingualen Unterrichtsversuch "Blut, Herz und Blutkreislauf"
in Klasse 10

3. Überprüfung der Schülerleistungen durch Klassenarbeit

10th form Test No 2 Biology

Name: Credits: /25 Mark:

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 seriously injured person with blood group A receive blood from a person with blood group AB? Prove your point by showing what happens when such a transfusion is made. ( 3 cr)

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

b. Describe the action of the human heart in the correct order. Please use the right biological terms. (3 cr)

c. What makes the blood travel in the correct direction through the heart?(2 cr)

d. 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. (3 cr)

4. a. When does a difference in the rhesus factor between the mother and the baby become 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, veins and capillaries look like ? Describe their structure and say why it is completely different?(3 cr)