Which of the following statements is correct about the structure of the heart wall?
A) The fibrous skeleton forms the bulk of the heart.
B) The myocardium is the layer of the heart wall that is made up of the cardiac muscle cells.
C) Connective tissue in the heart helps in conduction of the action potential.
D) The heart chambers are lined by endomysium.

Question

Quizplus · Accepted Answer

The myocardium is the middle layer of the heart wall that is composed of cardiac muscle cells. The fibrous skeleton is a network of dense connective tissue that provides support and helps to anchor the heart valves. Connective tissue in the heart also helps to form the electrical pathway for the conduction of the action potential. The endomysium is a layer of connective tissue that surrounds individual muscle fibers, not the heart chambers.

Which of the Following Statements Is Correct About the Structure