The atrioventricular valves are labelled A and B. Which statement about them is correct?
aThe tricuspid valve sits on the left side of the heart.
✓They stop blood re-entering the atria during ventricular contraction.
cThey open as the ventricles begin to contract.
dThe bicuspid valve has three separate cusps.
correct!
worked solution
Correct. The AV valves close during ventricular systole, preventing backflow into the atria.
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1:58:04 remaining3 / 6 answered
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Semester Two Examinations
HUBS 192
Human Body Systems · Mock Paper A
Multi-choice Questions (1 to 6) [Total Value 6 marks] For each question, choose the best (most correct) SINGLE answer and mark the answer sheet A, B, C, or D as appropriate.
1.
The atrioventricular valves are labelled A and B. Which statement about them is correct?
Figure 1. Frontal section of the heart.
(A)The tricuspid valve sits on the left side of the heart.
(B)They stop blood re-entering the atria during ventricular contraction.
(C)They open as the ventricles begin to contract.
(D)The bicuspid valve has three separate cusps.
2.
What is the function of the structure labelled C?
Figure 2. The urinary system.
(A)Carry urine from the kidneys to the bladder
(B)Store urine until it is expelled
(C)Carry urine out of the body
(D)Filter blood to form urine
3.
The structure labelled B lies immediately posterior to the:
Figure 3. Sagittal section of the upper airway.
(A)oral cavity
(B)larynx
(C)nasal cavity
(D)oesophagus
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