In the case of heart muscle, all are true except

ATI RN

ATI RN Test Bank

In the case of heart muscle, all are true except:

A. has striations B. has intercalated discs with nuclei C. has gap junctions D. has branching

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Which of the following electrocardiogram (EKG) waves represents atrial depolarization?

A. R wave B. T wave C. S wave D. P wave

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Blood vessel into which the right ventricle pumps blood through a semilunar valve

A. Aorta B. Pulmonary artery C. Coronary artery D. Superior vena cava

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

The muscular wall dividing the right and left ventricles

A. Interatrial septum B. Interventricular septum C. Coronary sulcus D. Fossa ovalis

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

The hematocrit is a measure of the percentage of whole blood occupied by

A. WBCs B. platelets C. RBCs D. plasma

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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