The simple squamous epithelium covering the heart valves is the (a) epicardium, (b) endocardium, (c) myocardium, (d) endothelium.

After Randy was diagnosed with stomach cancer, nearly all of his stomach had to be removed. Postoperative treatment included regular injections of vitamin B12. Why was this vitamin prescribed, and why were injections specified?

How does the heart's ability to contract differ from that of other muscles of the body?

Identify the structures in the following diagram of a sectional view of the heart. a. ___b. ___c. ___d. ___e. ___f. ___g. ___h. ___i. ___j. ___k. ___l. ___m. ___

The serous membrane covering the outer surface of the heart is the (a) parietal layer of the serous pericardium,(b) endocardium, (c) myocardium, (d) visceral layer of the serous pericardium.

Describe the three distinct layers that make up the heart wall.

The portion of the intrinsic conduction system located in the superior interventricular septum is thea. AV node,b. SA node,c. AV bundle,d. subendocardial conducting network.

Multiple ChoiceMore than one choice may apply.Using the figure, identify the most external part of the pericardium. a. b. c. d. e.