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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
Give biological reasons for the following statements:
The left ventricle of the heart has a thicker wall than the right ventricle.
State the exact location of the Chordae tendinae
Give appropriate biological or technical terms for the following :
The complex consisting of a DNA strand and a core of histones
MULTIPLE CHOICE TYPE:
(Select the most appropriate option)
The valve present between the right atrium and the right ventricle is the
(a) tricuspid valve
(b) bicuspid valve
(c) semi-lunar valve
(d) mitral valve
Name the following:
The smallest common blood vessels formed by the union of capillaries.
Describe how the exchange of oxygen and carbon dioxide gases takes place in the lungs.
All the waste products of the body are excreted through the circulatory system.
A female has haemophilic brother and parents having nonual blood clotting. She marries a male who has no history of haemophilia in his family. What is the possibility of her children having this disease?
Agranulocytes are about ______ % of total WBCs.
Serum differs from blood in lacking ____________.
