Vasoconstriction causes:.
Decreased pressure and decreased flow.
Decreased pressure and increased flow.
Increased pressure and increased flow.
Increased pressure and decreased flow.
The Correct Answer is D
The correct answer is Choice D.
Choice A rationale:
Vasoconstriction refers to the narrowing of blood vessels. When blood vessels constrict, they reduce the volume of blood that can flow through them, which increases the pressure. However, the flow is decreased, not increased.
Choice B rationale:
As explained above, vasoconstriction increases pressure but decreases flow.
Choice C rationale:
While vasoconstriction does increase pressure, it does not increase flow. Instead, it decreases flow.
Choice D rationale:
Vasoconstriction results in increased pressure and decreased flow. This happens because the narrowing of the blood vessels increases the resistance to blood flow, thereby increasing the pressure. At the same time, the reduced diameter of the blood vessels decreases the amount of blood that can flow through them.
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 ["A","B","C"]
Explanation
Choice A rationale:
Sinuses are indeed air-filled cavities. They are hollow spaces in the skull and the face bones around your nose.
Choice B rationale:
Sinuses are located in the skull and around the nose. There are four pairs of sinuses, named for the bones that they’re located in.
Choice C rationale:
One of the functions of the sinuses is to help lighten the head. The air-filled cavities provide a sort of crumple zone that can absorb impact and protect the brain.
Choice D rationale:
Gas exchange does not occur in the sinuses. The primary function of the sinuses is to produce mucus that moistens the inside of the nose. This mucus layer serves to trap dust and other particles that might otherwise reach the lungs.
Choice E rationale:
The sinuses do not directly help with hearing. The structures that are primarily responsible for hearing are the ears, specifically the eardrums and the bones of the middle ear. So, the correct answers are Choices A, B, and C, after analyzing all choices. .
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