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प्रश्न
What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?
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उत्तर
The human heart is four chambered consisting of two atria and two ventricles. The left side of the heart receives oxygen-rich blood whereas the right side of the heart receives carbon dioxide-rich blood. The left and right sides of the heart are completely separated from each other by a muscular septum, which prevents the mixing of oxygen-rich and carbon-dioxide rich blood.
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संबंधित प्रश्न
The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.
(a) What is (i) tissue A (ii) pigment B, and (iii) colour C?
(b) Name (i) D (ii) E (iii) F, and (iv) G.
(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.
(d) Which two components of tissue A are the cells without nucleus?
(e) Name any two organisms ( animals) which do not have liquid like A in their body.
Name the following:
Components of blood
All veins carry deoxygenated blood.
Mature RBC in mammals does not have cell organelles.
The ______ brings blood containing oxygen and urea from the aorta to the kidneys.
What prevents the backflow of blood inside the heart during contraction?
Paheli noticed water being pulled up by a motor pump to an overhead tank of a five-storeyed building. She wondered how water moves up to great heights in the tall trees standing next to the building. Can you tell me why?
When a red blood corpuscle containing both A and B antigens are mixed with your blood serum, they agglutinate. Hence your blood group is ______.
Least abundant leucocyte is ______.
Define the following term:
Blood
