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Biology Human Blood Circulation

Blood Circulation System: Parts and their Functions

The blood circulation system, also known as the cardiovascular system, is a network of blood vessels that transport blood throughout the body. It consists of the heart, blood vessels, and blood. The heart pumps blood through the blood vessels, which deliver oxygen and nutrients to the body’s cells and remove waste products.

Parts of the Blood Circulation System

The main parts of the blood circulation system are:

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Biology Human Heart

Structure of Human Heart

The human heart is a vital organ responsible for pumping oxygenated blood throughout the body and removing deoxygenated blood through level.

Chambers of the Heart

The heart is divided into four chambers: two atria (singular: atrium) and two ventricles. The atria are the upper chambers, and the ventricles are the lower chambers.

  • Right Atrium: The right atrium receives deoxygenated blood from the body through two large veins called the superior vena cava and the inferior vena cava.
  • Right Ventricle: The right ventricle pumps the deoxygenated blood to the lungs through the pulmonary artery.
  • Left Atrium: The left atrium receives oxygenated blood from the lungs through four pulmonary veins.
  • Left Ventricle: The left ventricle pumps the oxygenated blood to the rest of the body through the aorta, the largest artery in the body.
Valves of the Heart

The heart contains four valves that prevent backflow of blood and ensure proper blood flow.

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