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10. What organ pumps blood through the body?​

Sagot :

Answer:

The Heart

Explanation:

Your heart is like a pump. It pushes blood around your body. This blood carries oxygen to all parts of you, like your brain, arms, and legs.

The organ that pumps blood through the body is the heart.

Characteristics of Heart

  • Structure - The heart is a muscular organ with four chambers—two atria (upper chambers) and two ventricles (lower chambers). It is roughly the size of a fist and located in the chest cavity between the lungs.
  • Pumping Mechanism - It functions as a dual pump; the right side pumps deoxygenated blood to the lungs for oxygenation, while the left side pumps oxygenated blood to the rest of the body.
  • Heartbeat - The heart beats in a regular rhythm due to electrical impulses that coordinate the contraction of the heart muscles. This rhythm is known as the cardiac cycle.
  • Valves - The heart contains four main valves—tricuspid, pulmonary, mitral, and aortic—that ensure blood flows in the correct direction and prevent backflow.