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Anon25 [30]
3 years ago
12

The heart is a cone-shaped muscular organ located within the

Health
1 answer:
lina2011 [118]3 years ago
5 0

Answer:

The heart is a cone-shaped muscular organ located within the THORAX

. Its apex rests on the DIAPHRAGM , and its base is at the level

of the SECOND rib. The coronary artenes that nourish the

myocardium arise from the AORTA. The coronary sinus empties

into the RIGHT ATRIUM . Relative to the roles of the heart chambers, the

ATRIA are receiving chambers, whereas the VENTRICLES are

discharging chambers. The membrane that lines the heart and

also forms the valve ſaps is called the ENDOCARDIUM , The outermost

layer of the heart is called the EPICARDIUM . The fluid that fills the

pericardial sac acts to decrease FRICTION during heart activity.

The heart muscle, or myocardium, is composed of a special-

ized type of muscle tissue called CARDIAC MUSCLE

Explanation:

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