Describe Double Circulation in Human Beings Why is It Necessary?

In today’s blog, we’ll answer your question ‘describe double circulation in human beings why is it necessary?’ So keep reading this blog till the end to know the answer. However, before jumping to this question, first, you should know what exactly double circulation is:

What does Double Circulation Mean?
Double circulation works as a path, and blood follows this pathway to travel across different body organs through arteries and veins. In human beings, during each cycle blood goes through the heart two times, which means the blood goes through the human heart twice to deliver once to the entire body, called double circulation.
The human circulatory system possesses three key parts: blood, blood vessels, and the heart. It is known as a double circulatory system because blood goes through the heart two times per circuit.

Double circulation makes blood movement in the whole body, and it includes the flow of:

  • Oxygenated blood: rich in oxygen
  • Deoxygenated blood: a lot of carbon dioxide, and minimum to no oxygen

In the double circulatory system, blood passes in two pathways:

Systematic Circulation

  • Systematic circulation is responsible for transferring oxygen-rich blood in the tissue from the left ventricles to capillaries.
  • Oxygenated blood is transferred to the aorta for division into several sections of the body.
  • The venules and veins immerse the deoxygenated blood from multiple parts of the body.
  • The deoxygenated blood is passed back to the superior vena cava and then to the right atrium.
  • The right atrium transferred blood for pulmonary circulation to the right ventricle after acquiring the deoxygenated blood.

Pulmonary Circulation 

  • The division of blood begins in the pulmonary circulation from the right atrium to the left atrium.
  • The pulmonary artery gets the blood from the right ventricles and for oxygenation, transports it to the lungs.
  • When the oxygen-rich blood is turned back to the left atrium through the pulmonary circulation that is carried to the left ventricles once the purification process is done.

It is vital to detach oxygenated and deoxygenated blood for a human being because it helps to make the circulatory system efficient and maintains constant body temperature.

Why is Blood Circulation in the Human Heart called Double Circulation?
It is crucial for human beings as it ensures our muscles and tissues get oxygen-rich blood instead of an unclean mixture of deoxygenated and oxygen-rich blood. The heart pumps blood via four chambers, including two Atria and two ventricles. The four valves in the heart help in moving blood in one direction and prevent the reverse flow of blood into the heart. The two valves are present in the heart, and the other two valves are present in arteries in the heart. The heart’s major arteries are pulmonary and aorta arteries. The human heart is divided into two parts, divided by a muscle tissue known as septum, each half having an atrium that resides on one ventricle.

In a double circulatory system, the blood moves via the heart two times per circuit. Four chambers in the heart play a crucial role in the double circulation in human bodies:

  • Left Atrium: It takes oxygen-rich blood from the lungs.
  • Right Atrium: Receives deoxygenated blood.
  • Left Ventricle: Receives oxygenated blood from the left atrium through a bi-cuspid valve.
  • Right Ventricle: From the right atrium, it takes deoxygenated blood through the tricuspid valve.

The following blood vessels carry double circulation:

  • Pulmonary Artery: Receives deoxygenated blood to the lungs.
  • Aorta: Acquire oxygen-rich blood to the body tissues.
  • Pulmonary Vein: Acquire oxygenated blood.
  • Vena Cava: Takes oxygen-rich blood. 

Benefits of Double Circulation
The following are some benefits of double circulation, and you’ll be able to understand why circulation is crucial for our bodies:

  1. Maintains high blood pressure.
  2. Efficient blood flow to the tissues.
  3. Create pressure to pump blood around the entire body organs and tissues.
  4. The separation of deoxygenated and oxygenated blood is important to take in oxygen and eliminate carbon dioxide from the blood via the lungs.
  5. To maintain life processes, it helps in generating energy.
  6. It allows pure blood to reach several organs and tissues of the body like the liver, kidney, etc.
  7. The circulatory system moves all metabolic wastes from tissues and cells of the body to the kidneys for removal.
  8. Helps in transporting inorganic ions, water, and chemicals to all the tissues and cells of the body as per needs.

Wrapping Up
In this blog, you get to know the answer of ‘describe double circulation in human beings why is it necessary.’ Apart from this, you also come to know several advantages of double circulation, several blood vessels that carry double circulation. We hope you like this post, and you get the exact answer you want.

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