Vasa vasorum are small arterioles found in

ATI LPN

ATI LPN Test Bank

Vasa vasorum are small arterioles found in:

A. T. Adventitia and outer T. Media B. T. Media only C. T. Intima D. None of them

Correct Answer: A

Rationale: Vasa vasorum supply the outer layers of large vessels, located in the tunica adventitia and outer tunica media.

Which of the following has a slow depolarizing phase?

A. SA node B. Atrial muscle cell C. Bundle of His D. Purkinje fibers

Correct Answer: A

Rationale: The SA node has a slow depolarizing phase due to slow calcium influx, unlike the rapid sodium-driven depolarization elsewhere.

What will happen in case of high cholesterol levels:

A. Transcription of HMG CoA reductase's gene B. HMG CoA reductase is inhibited C. Hypercholesterolemia D. Both A and B

Correct Answer: B

Rationale: High cholesterol inhibits HMG CoA reductase to reduce further synthesis.

Which one of the following causes noninfectious myocarditis?

A. Coxsackie B B. HIV C. Vasculitis D. Corynebacterium diphtheria

Correct Answer: C

Rationale: Vasculitis causes noninfectious myocarditis, unlike the infectious agents listed.

Which of the following is considered as a cardiovascular complication due to hypertension?

A. Benign nephrosclerosis B. Hypertensive retinopathy C. Psychogenic D. Coarctation of the aorta

Correct Answer: B

Rationale: Hypertensive retinopathy is a direct cardiovascular complication of hypertension.

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