PE gcse Test 4

Question 1

Identify the chambers of the heart labelled A and B on the diagram on MS Paint.

Answer 1

A = Right Atrium
B = Left ventricle

Question 2

Identify the blood vessel labelled C on the MS paint diagram

Answer 2

C = Pulmonary Artery

Question 3

Identify the correct order which blood passes through each of the four chambers of the heart after gaseous exchange at the muscles. (4)

Answer 3

Right atrium > Right ventricle > Left atrium > Left ventricle

Question 4

4. Identify the blood vessel which transports oxygenated blood back into the heart. (1)

Answer 4

Pulmonary Vein

Question 5

Describe two structural features of veins. (2)

Answer 5

Thin walls
Wide lumen
Work under low pressure
Contains valves Any two will give you the marks

Question 6

Describe two structural features of arteries. (2)

Answer 6

Thick Elastic walls
Narrow Lumen
Work under high pressure

Question 7

7. Explain the role of vasoconstriction during the redistribution of blood. (2)

Answer 7

Blood vessels become narrower
This limits the blood flow to areas where demand for blood is lower

Question 8

8. Explain the role of vasodilation during the redistribution of blood. (2)

Answer 8

Blood vessels become wider
This increases the blood flow to areas where demand for blood is higher

Question 9

9. Define heart rate. (1)

Answer 9

The number of times the heart contracts in one minute

Question 10

10. Define cardiac output. (1)

Answer 10

The volume of blood pumped out of the heart per minute

Question 11

11. Define anticipatory rise, and state what causes it to occur. (2)

Answer 11

A slight increase in heart rate prior to exercise
Caused by a release of adrenaline