What are the exchange vessels of the circulatory system, where nutrients, wastes, and hormones are transferred between blood and tissues?.
Venules.
Capillaries.
Arterioles.
Veins.
The Correct Answer is B
The correct answer is Choice B.
Choice A rationale:
Venules are small vessels that collect blood from the capillaries and transport it to the veins. They are not primarily involved in the exchange of nutrients, wastes, and hormones.
Choice B rationale:
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. They are the primary sites for the exchange of gases, nutrients, and waste between blood and tissues.
Choice C rationale:
Arterioles are small branches of arteries that lead to capillaries. They primarily regulate blood pressure and blood flow, not the exchange of substances.
Choice D rationale:
Veins carry deoxygenated blood back to the heart. They are not the primary sites for substance exchange.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Sinusoids are a type of capillary found in some organs, such as the liver, bone marrow, and spleen. They are not vessels that carry blood away from the heart.
Choice B rationale:
Veins are blood vessels that carry blood from the body back into the heart.
Choice C rationale:
Capillaries are delicate blood vessels that deliver blood, nutrients and oxygen to cells throughout the body. They do not carry blood away from the heart.
Choice D rationale:
Arteries are blood vessels that carry oxygenated blood away from the heart to the body.
Correct Answer is D
Explanation
hoice A rationale:
External intercostals assist in inspiration by elevating the ribs and expanding the chest cavity.
Choice B rationale:
Abdominals are not the main muscles responsible for pulmonary ventilation.
Choice C rationale:
Internal intercostals assist in forced expiration.
Choice D rationale:
The diaphragm is the main muscle responsible for pulmonary ventilation.
So, the correct answer is Choice D, after analyzing all choices.
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