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प्रश्न
Describe, in brief, the circulatory system in human beings.
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उत्तर
The circulatory system in human beings consists of heart, blood vessels (arteries, veins and capillaries) and blood. Blood circulates throughout the body in blood vessels by the pumping action of the heart. The impure blood is carried by veins from all parts of the body to the heart. The heart pumps it into the lungs where blood is oxygenated and carried back to the heart. From heart, the oxygenated (pure) blood is pumped to all parts of the body through arteries.
Thus, the circulatory system forms the transport system carrying food, oxygen, waste products, nutrients etc. throughout the body.
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संबंधित प्रश्न
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Column A Column B
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Which numbers represent the following respectively?
Aorta
Hepatic portal vein
Pulmonary artery
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Renal vein
Stomach
Fill in the blank:
The blood vessels which carry blood from the heart to different parts of the body are called ______.
_____ gas is transported to all parts of the body.
Hematocrit is ______.
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- Angina is acute chest pain when the blood circulation to the brain is reduced.
- Persons with blood group AB can donate blood to any person with any blood group under ABO system.
- Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?
