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प्रश्न
Why is blood needed by all the parts of a body?
उत्तर १
- Blood carries oxygen, food, hormones and other essential substances to different parts of the body.
- It brings carbon dioxide and other excretory substances from different parts of the body and expels them with the help of the lungs and other excretory organs.
- It sends toxic and harmful substances formed in metabolism to the liver to make them harmless. Thus, all organs need blood.
उत्तर २
- Blood is needed by all the parts because it contains the digested food and oxygen in it.
- It supplies oxygen and digested food to various parts of the body to provide essential energy to them which helps the body to perform various functions.
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संबंधित प्रश्न
The cells in our blood which destroy disease-causing germs are:
Match the statements in Column A with those in Column B:
Name the following:
The smallest common blood vessels formed by the union of capillaries.
Give reason for the following:
Atrial wall is less muscular than the ventricular wall.
Match the items given in Column A with the most appropriate ones in Column B and REWRITE the correct matching pairs :
Column A Column B
(i) Cranial nerves Testosterone
(ii) Leydig cells Natural reflex
(iii) Acetylcholine 12 pairs
(iv) Spinal nerves Prolactin
(v) Sneezing Neurotransmitter
- 18 pairs
- 31 pairs
- Conditioned reflex
Why does the left ventricle possess a thicker wall than the right ventricle?
Give any three differences between an artery and a vein
True or false:
Impure blood is received by the right auricle.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leucocytes show amoeboid movement.
Distinguish between Intrinsic and extrinsic process of clotting
