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 A
Explanation
Answer and explanation
The correct answer is Choice A.
Choice A rationale:
The conchae or turbinates are structures in the nasal cavity that increase the surface area of the mucosa exposed to the air. As air passes over the mucosa, it picks up moisture and heat, which helps to humidify and warm the air before it reaches the lungs.
Choice B rationale:
The sphenoid is a bone located at the base of the skull. It does not have a direct role in the heating or humidification of air.
Choice C rationale:
The nasopharynx is part of the pharynx that connects the nasal cavity to the throat. While it does play a role in the passage of air from the nose to the lungs, it is not the primary site where air picks up moisture and heat.
Choice D rationale:
The oropharynx is another part of the pharynx, located below the nasopharynx. It is involved in both respiratory and digestive processes, but it is not the main site where air picks up moisture and heat.
So, the correct answer is Choice A, after analyzing all choices.
Correct Answer is {"dropdown-group-1":"B"}
Explanation
Choice A rationale:
Viruses are pathogens that the immune system defends against, not components of nonspecific immunity.
Choice B rationale:
Lysozyme is an enzyme found in mucus, tears, and saliva that destroys bacteria, contributing to nonspecific immunity.
Choice C rationale:
Lysol is a brand of cleaning products and is not found in mucus, tears, or saliva.
Choice D rationale:
Immunoglobulins are antibodies produced by the immune system, not components of mucus, tears, or saliva.
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