Biology, asked by dsanzharboss, 12 days ago

DESCRIBE THE STRUCTURE OF THE HEART AND BLOOD VESSELS IN ANIMALS

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Answered by Anonymous

5

Answer:

The heart is primarily made of a thick muscle layer, called the myocardium, surrounded by membranes. One-way valves separate the four chambers.

Blood vessels of the coronary system, including the coronary arteries and veins, keep the heart musculature oxygenated.

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