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

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.

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

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.

Draw a diagram of the heart showing the three layers composing its wall and its four chambers. Label each. Show where the AV and semilunar valves are, and name them. Show and label all blood vessels entering and leaving the heart chambers.