QuestionSBA
QuestionChoice
The image shows a plastic model of a dissected heart. This answer describes the function of the bicuspid (mitral) valve, which allows blood to flow from the left atrium into the left ventricle. However, the blue arrow indicates the semilunar valve between the right ventricle and the pulmonary trunk – the pulmonary valve, whose function is to ensure unidirectional flow of deoxygenated blood from the right ventricle to the pulmonary trunk.
10008888
d
Ensures unidirectional flow of blood from the left atrium to the left ventricle
QuestionChoice
The image shows a plastic model of a dissected heart. This answer describes the function of the aortic valve, which ensures unidirectional flow of blood from the left ventricle to the aorta. However, the blue arrow indicates the semilunar valve between the right ventricle and the pulmonary trunk – the pulmonary valve, whose function is to ensure unidirectional flow of deoxygenated blood from the right ventricle into the pulmonary trunk.
10008886
b
Ensures unidirectional flow of blood from the left ventricle to the aorta
QuestionChoice
The image shows a plastic model of a dissected heart. This answer describes the function of the tricuspid valve, which allows blood to pass from the right atrium to the right ventricle. However, the blue arrow indicates the semilunar valve between the right ventricle and the pulmonary trunk – the pulmonary valve, whose function is to ensure unidirectional flow of deoxygenated blood from the right ventricle to the pulmonary trunk.
10008887
c
Ensures unidirectional flow of blood from the right atrium to the right ventricle
QuestionChoice
The image shows a plastic model of a dissected heart. This answer is not correct, because blood passes from the atria to the ventricles. The only time that blood may pass from the ventricles to the atria is in pathological states, e.g. regurgitation. The valves function to ensure unidirectional blood flow. The blue arrow indicates the semilunar valve between the right ventricle and the pulmonary trunk – the pulmonary valve, whose function is to ensure unidirectional flow of deoxygenated blood from the right ventricle to the pulmonary trunk.
10008889
e
Ensures unidirectional flow of blood from ventricles to atria
QuestionChoice
The image shows a plastic model of a dissected heart. The blue arrow indicates the semilunar valve between the right ventricle and the pulmonary trunk – the pulmonary valve, whose function is to ensure unidirectional flow of deoxygenated blood from the right ventricle into the pulmonary trunk.
10008885
a
Ensures unidirectional flow of blood from the right ventricle to the pulmonary trunk
Concept
Chapter
2693
5284
Valves of the heart
Topic
198
Thoracic anatomy
14324
Picture
1826
79 - Valves of the heart (pulmonary).png
images/mmu3492h1683002797708.jpg
images/mmu3492h1683002797708_256.jpg
images/mmu3492h1683002797708_512.jpg
YxgKDYT5Noh4pmeKdnhoeAmGdXBI
Topic
198
Thoracic anatomy
What is the function of the anatomical structure indicated by the blue arrow in the image below?

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a