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maks197457 [2]
3 years ago
15

Pectinate muscles extend from the atrial internal wall into the pouch-like structures that increase the total filling capacity o

f the atrium. these structure are the
Biology
1 answer:
alukav5142 [94]3 years ago
3 0
Pectinate muscles are parallel ridges in the walls of the atria of the heart. The name is due to their resemblance to the teeth of a comb (pecten). The heart is the organ  pumps blood to all parts of the body. It is made up of four chambers, that is, right and left ventricles, left and right atria, and the blood vessels, Pulmonary artery, pulmonary vein, aorta, and venacava. An auricles are pouch like structure that increase the total filling capacity of the atrium and also increase the volume of blood that an atrium is able to contain.
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