Textbook Question
A birth defect called transposition of great vessels results in the pulmonary trunk emanating from the left ventricle and the aorta stemming from the right ventricle.
Predict the potential effects of this birth defect.
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19. The Blood Vessels
Introduction to Blood Vessels
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Which type of blood vessels allow for the exchange of oxygen and nutrients into the tissues?
A
Capillaries
B
Arterioles
C
Veins
D
Arteries
Verified step by step guidance1
Understand the function of each type of blood vessel: Arteries carry blood away from the heart, veins carry blood back to the heart, and capillaries are involved in the exchange of substances between blood and tissues.
Recognize that the primary function of capillaries is to facilitate the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.
Consider the structure of capillaries: They have thin walls composed of a single layer of endothelial cells, which allows for efficient diffusion of gases and nutrients.
Compare this with the structure of arteries and veins: Arteries have thicker walls to withstand high pressure, and veins have valves to prevent backflow, neither of which are primarily designed for exchange.
Conclude that capillaries, due to their structure and function, are the blood vessels that allow for the exchange of oxygen and nutrients into the tissues.
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