Which Statements Are Correct Regarding the Various Layers of the Heart

question 55

Multiple Choice

Which statements are correct regarding the various layers of the heart? Select all that apply.

• A)The endocardium covers the entire heart and great vessels.
• B)The endocardium is the muscular layer of the heart that contracts during each heartbeat.
• C)The outermost layer of the heart is the epicardium.
• D)The myocardium consists of myofibril cells.
• E)The myocardium has four layers.

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Definitions:

H+

The proton, often representing an acid in chemistry, capable of forming hydronium ions (H3O+) in solution.

Reactive Intermediate

Highly reactive species formed transiently in the course of a chemical reaction.

Hydroxide

A negatively charged ion (OH-) consisting of oxygen and hydrogen.

Diazomethane

A highly reactive organic compound with the formula CH2N2, used in organic synthesis to introduce methyl groups or to form diazo compounds.