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प्रश्न
Write the function of valves present in between atria and ventricles.
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उत्तर
The valves present in between atria and ventricles help to restrict the backflow of the blood from ventricle to atrium when the ventricle contracts.
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संबंधित प्रश्न
What stops blood from flowing backward through the heart?
Fill in the blank with suitable word given below:
The oxygen-rich blood is pumped into different parts of the body through ________.
Multiple choice question. Tick (✓) the correct choice:
The blood vessels in which blood goes away from the heart to different body parts are
- arteries
- capillaries
- veins
- both arteries and veins.
Multiple choice question. Tick (✓) the correct choice:
The blood cells which protect the body from infection are
- RBCs
- platelets
- WBCs
- all the above
Describe the functions of White blood cells.
Describe the functions of Platelets.
The figures given below show diagrammatic cross sections of three kinds of blood vessels.
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- Identify the blood vessels A, B and C.
- Name the parts labelled 1-4.
- Mention two structural differences between A and B.
- Name the kinds of blood that flow through A and through B respectively.
- In which one of the vessels referred to in (a) above does the exchange of gases actually take place?
Blood vessels consist of arteries and veins.
The blood vessel without a mascular layer in its wall ______.
Name the following:
The blood vessel which starts from capillaries and ends in capillaries.
