Which of the following is true about the sinuses? Select all that apply.
(Select All that Apply.).
Air-filled cavities.
Located in the skull and around the nose.
Help lighten the head.
Gas exchange occurs.
Correct Answer : A,B,C
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. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Arteries carry oxygen-rich blood away from the heart to various organs and tissues.
Choice B rationale:
Arteries do not carry blood away from the body. They transport blood within the body.
Choice C rationale:
While arteries do distribute blood throughout the body, this statement is too general and does not accurately describe the primary function of arteries.
Choice D rationale:
Arteries do not carry blood to the heart; this is the function of veins.
Correct Answer is C
Explanation
The correct answer is Choice C. -
Choice A rationale:
The bicuspid valve, also known as the mitral valve, prevents backflow from the left ventricle to the left atrium. -
Choice B rationale:
The semilunar valves include the aortic and pulmonary valves, but neither prevents backflow into the right atrium. -
Choice C rationale:
The tricuspid valve prevents backflow from the right ventricle to the right atrium. -
Choice D rationale:
The aortic valve prevents backflow from the aorta to the left ventricle.
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