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ATI LPN · Anatomy and Physiology · Cardiovascular System Questions and Answers Quizlet

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The rhythm and electrical activity of the heart can be detected with electrodes on the skin and displayed in the form of an:

A. electro-oculogram

B. electroencephalogram

C. electrocardiogram

D. echocardiogram

Expert Explanatory Rationale

Correct Answer: electrocardiogram

Question 2 of 5

Which network of specialized cardiac muscle fibers provide a path for each cycle of cardiac excitation to progress through the heart?

A. Systemic circuit

B. Intercalated discs

C. Cardiovascular center

D. Cardiac conduction system

Expert Explanatory Rationale

Correct Answer: Cardiac conduction system

Question 3 of 5

The right subclavian artery supplies:

A. Oxygenated blood to the stomach

B. Oxygenated blood to the forelimb

C. Oxygenated blood to the kidney

D. Deoxygenated blood to the liver

Expert Explanatory Rationale

Correct Answer: Oxygenated blood to the forelimb

Question 4 of 5

The process by which the formed elements of the blood develop is called

A. hematospermia

B. hemopoiesis

C. thrombocytosis

D. hemostasis

Expert Explanatory Rationale

Correct Answer: hemopoiesis

Question 5 of 5

In the brain, the endothelial cells of the capillary walls are more tightly fused than those in other body regions. This fact underlies the operation of the:

A. precapillary sphincter network

B. astrocyte network

C. blood-brain barrier

D. impermeable membrane region

Expert Explanatory Rationale

Correct Answer: blood-brain barrier

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