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ATI LPN · Anatomy and Physiology · Cardiovascular System Assessment Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Conduction velocity is least in:

A. AV node

B. SA Node

C. Purkinje fibers

D. Bundle of His

Correct Answer: AV node

Question 2 of 5

Stroke volume is the volume of blood:

A. in the ventricle prior to ejection

B. left in the ventricle following ejection

C. pumped by a ventricle during a single contraction

D. pumped by a ventricle during a minute

Correct Answer: pumped by a ventricle during a single contraction

Question 3 of 5

Which of the following blood cells phagocytizes antigen-antibody complexes and are effective against parasitic worms?

A. Eosinophil

B. Monocyte

C. Lymphocyte

D. Basophil

Correct Answer: Eosinophil

Question 4 of 5

The muscle layer of the heart

A. Endocardium

B. Epicardium

C. Myocardium

D. Pericardium

Correct Answer: Myocardium

Question 5 of 5

Which of the following is an anticoagulant?

A. Calcium ions

B. Vitamin K

C. Thromboplastin

D. Heparin

Correct Answer: Heparin

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