Double Circulation: Types of Circulatory Systems, Single Circulation (For CBSE, ICSE, IAS, NET, NRA 2022)

Glide to success with Doorsteptutor material for NEET : Get full length tests using official NTA interface: all topics with exact weightage, real exam experience, detailed analytics, comparison and rankings, & questions with full solutions.

Types of Circulatory System

  • Humans just like majority of mammals use a double circulatory system.
  • Animals have open circulatory and closed circulatory system.
Single and Double Circulation

Single Circulation

  • The blood will pass through the heart to gills.
  • The blood is distributed to the different parts of the body after the purification.
  • Due to completion of only one cardiac cycle single circulation has been named.
  • Single circulation is observed in birds, fish, reptiles, etc.

Double Circulation

  • Double circulation name is because the blood follows two routes one for oxygenated blood and the other for deoxygenated blood.
  • Humans make use of the double circulatory system just like many mammals.

Human Heart and Its Division

The Heart, Showing Valves, Arteries and Veins

Four Chambers

  • Left Atria-The left atrium collects blood from the pulmonary veins and ejects it into the left ventricle.
  • Right Atria- The right atrium acts as the first chamber of the heart to receive deoxygenated and carbon dioxide-rich systemic blood from the body.
  • Left Ventricles- To pump oxygenated blood from the lungs out to the body.
  • Right Ventricles- This is responsible for pumping oxygen-depleted blood to the lungs.

FAQs

Q 1. For what reason, the blood circulation in the human heart is called double Circulation?

Answer:

  • Since the blood enters twice to the heart and blood escapes twice from the heart via arteries and veins.
  • Also due to the presence of four chambered hearts.

Q 2. What is the most important reason for which double circulation in human beings become essential?

Answer:

Double circulation is responsible for allowing the separation of oxygenated and deoxygenated blood in the body.

Q 3. What are the two types of circulation in the human body w. r. t Double circulation?

Answer:

There are two types of circulation in the human body that are responsible for Double circulation.

  • Pulmonary circulation.
  • Systemic Circulation.

Q 4. List out the names of the four chambers of the heart?

Answer:

Four chambers of the heart are:

i) Left Atria

ii) Right Atria

iii) Left Ventricles

iv) Right Ventricles