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:
Capillaries are the smallest blood vessels that connect arteries and veins. They allow nutrients in the blood to diffuse to the body’s tissues.
Choice B rationale:
Arteries carry oxygen-rich blood from the heart to the tissues of the body. They do not connect the two sides of the vascular system.
Choice C rationale:
Venules are very small blood vessels that connect capillaries with veins throughout the body. They do not connect the two sides of the vascular system.
Choice D rationale:
Veins carry blood back toward the heart. They do not connect the two sides of the vascular system
Correct Answer is A
Explanation
Choice A rationale:
Neutrophils are the most abundant type of white blood cells and are the first to travel to the site of an infection.
Choice B rationale:
Macrophages are white blood cells that reside in tissues and are key players in the immune response, but they do not travel throughout the bloodstream seeking out bacteria.
Choice C rationale:
Phagocytes is a general term for cells that engulf and digest pathogens, which includes neutrophils and macrophages.
Choice D rationale:
Phagosomes are not cells, but are compartments within phagocytes that contain pathogens to be destroyed.
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