Question

Briefly explain the Internal structure of the human heart and the associated blood vessels​

Answer 1

Explanation:

In humans, the heart is about the size of a clenched fist. It is divided into four chambers: two atria and two ventricles.The right atrium receives deoxygenated blood from the superior vena cava, which drains blood from the veins of the upper organs and arms

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Answer 2

Hello!

In humans, the heart is about the size of a clenched fist. It is divided into four chambers: two atria and two ventricles.The right atrium receives deoxygenated blood from the superior vena cava, which drains blood from the veins of the upper organs and arms.

Thank you!