Science, asked by satyaballa24, 6 months ago

about heart and heart beat IN humans and excretion in animals and humans

Answers

Answered by Anonymous

Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. Your heart is a muscle, and its job is to pump blood throughout your circulatory system.

Answered by Reus7

Humans have a heart with two atria and two ventricles that pushes blood in one direction. Some animals have hearts similar to humans but, other animals have only one atrium and one ventricle or a cardiovascular system that can push blood in two directions.

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