NBDE Part 1 Practice Exam Series 30 – Physiology NBDE Part 1 Study Material

Question 11: What will happen if arterioles are acted on by nitric oxide?

A. Dilate

B. Constricts

C. First constricts then dilates

D. First dilates then constricts


Answer: [A]


Question 12: Which of the following compound constricts the arteries?

A. Nitric oxide

B. Adenosine

C. Endothelins

D. All of the above


Answer: [C]


Question 13: Which of the following blood vessels are considered as the primary resistance vessels?

A. Arteries

B. Arterioles

C. Capillaries

D. Veins


Answer: [B]


Question 14: The thick tunica media present in arterioles is composed of:

A. Striated muscles

B. Smooth muscles

C. Adipose tissue

D. Elastic tissue


Answer: [B]


Question 15: In which of the following blood vessels alpha-1 adrenergic receptors are present?

A. Arterioles of skin

B. Arterioles of skeletal muscles

C. Arteries present in the heart

D. All of the above


Answer: [A]

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