5. Which of the following is NOT a
layer of the heart?
o
a. Endocardium
b. Myocardium
O c. Endomyosin
O d. Pericardium
Answers
Answer:
c) Endomyosin is not a layer of the heart.
Answer:
The correct answer is c. Endomyosin
Explaination:
a. Endocardium: This is the innermost layer of the heart that lines the chambers and valves. It is composed of a thin layer of endothelial cells supported by a layer of connective tissue.
b. Myocardium: This is the middle layer of the heart and it is composed of cardiac muscle tissue. The myocardium is responsible for the contraction of the heart and pumping of blood throughout the body.
c. Endomyosin: Endomyosin is not a layer of the heart. Endomyosin is a protein found in skeletal muscle that is involved in the regulation of muscle contraction.
d. Pericardium: This is the outermost layer of the heart and it is composed of two layers: the fibrous pericardium and the serous pericardium. The fibrous pericardium is a tough, dense layer of connective tissue that surrounds the heart and helps to protect it.
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