1 markWhich row of the table below shows the correct chambers of the heart, from those with the thinnest walls to those with the thickest?
| thinnest → thickest | ||
A | left ventricle | right ventricle | left atrium |
B | left atrium | left ventricle | right ventricle |
C | right ventricle | left atrium | left ventricle |
D | left atrium | right ventricle | left ventricle |
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1 markWhich of the following statements would be incorrect for most of the veins in the human body?
They carry blood at low pressure.
They have valves.
They have a pulse.
They return blood to the heart.
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1 markThe blood contains lymphocytes.
What is their purpose?
Transport of hormones
Phagocytosis
Antibody production
Blood clotting
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1 markWhich of the following is a correct explanation as to why mammals have a double circulatory system?
To reduce pressure of blood returning from the lungs to supply cells of the body most efficiently with the reactants for respiration.
To increase the pressure of blood sent to the lungs to supply cells of the body most efficiently with the reactants for respiration.
To increase the pressure of blood returning from the lungs to supply cells of the body most efficiently with the reactants for respiration.
To reduce pressure of blood sent to the lungs to supply the cells most efficiently with the products for respiration.
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1 markThe diagram below shows a vertical section through a human heart.
Which row of the following table has the correct names for the structures labelled in the diagram?
| X | Y | Z |
A | atrioventricular valve | semilunar valve | septum |
B | semilunar valve | atrioventricular valve | septum |
C | semilunar valve | semilunar valve | atrioventricular valve |
D | atrioventricular valve | atrioventricular valve | septum |
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1 markThe diagram below shows the human heart and some of the blood vessels associated with it.
Before blood in P reaches Q, what must it do?
Pass through capillaries
Absorb glucose
Transfer heat to the skin
Travel to the head
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1 markThe image below shows a cross-section of a blood vessel taken from an arm.
Which type of blood vessel is shown in the image, and in which direction will blood flow?
| type of vessel | direction of flow | oxygenation of blood |
A | capillary | S to T | low |
B | vein | T to S | high |
C | artery | S to T | high |
D | vein | T to S | low |
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1 markSome components of the blood of a mammal are shown in the image below.
Which row of the table has the correct cells from the image above assigned to their names?
| lymphocyte | phagocyte | platelets |
A | 4 | 2 | 3 |
B | 2 | 4 | 3 |
C | 1 | 2 | 1 |
D | 2 | 4 | 1 |
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1 markWhich of the following would be found dissolved in the blood plasma of a human?
Glucose, urea and hormones
Oxygen, urea and starch
Carbon dioxide, hormones and haemoglobin
Carbon dioxide, oxygen and urea
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1 markWhich blood vessel has a relatively low carbon dioxide concentration, a high oxygen concentration and a low blood pressure?
Pulmonary artery
Pulmonary vein
Aorta
Vena cava
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1 markIn which list of the following do all three blood vessels carry deoxygenated blood?
aorta, pulmonary vein, renal artery
vena cava, pulmonary vein, renal vein
vena cava, pulmonary artery, renal vein
aorta, pulmonary artery, renal artery
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1 markFour different stages in one heartbeat are shown in the diagram below.
Which of the following depicts a correct order of stages?
W→ X → Y → Z
X → Z → W → Y
W → Y → Z → X
X → W → Y → Z
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1 markWhich of the following depicts the correct order of stages in the formation of a blood clot?
soluble fibrin → insoluble fibrinogen → blood clot
soluble fibrinogen → insoluble fibrin → blood clot
insoluble fibrin → soluble fibrinogen → blood clot
insoluble fibrinogen → soluble fibrin→ blood clot
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