Class 11 Biology - Chapter Breathing and Exchange of Gasses NCERT Solutions | Define vital capacity. What is its signi
Define vital capacity. What is its significance?
Vital capacity is the maximum volume of air that can be exhaled after a maximum inspiration. It is about 3.5 – 4.5 litres in the human body. It promotes the act of supplying fresh air and getting rid of foul air, thereby increasing the gaseous exchange between the tissues and the environment.
More Questions From Class 11 Biology - Chapter Breathing and Exchange of Gasses
- Q:- What are the major transport mechanisms for CO2? Explain.
- Q:- What will be the pO2 and pCO2 in the atmospheric air compared to those in the alveolar air?
(i) pO2 lesser, pCO2 higher
(ii) pO2 higher, pCO2 lesser
(iii) pO2 higher, pCO2 higher
(iv) pO2 lesser, pCO2 lesser - Q:-
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
- Q:- Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why?
- Q:- Explain the process of inspiration under normal conditions.
- Q:- How is respiration regulated?
- Q:-
Distinguish between
(a) IRV and ERV
(b) Inspiratory capacity and Expiratory capacity
(c) Vital capacity and Total lung capacity - Q:-
What is the effect of pCO2 on oxygen transport?
- Q:- State the volume of air remaining in the lungs after a normal breathing.
- Q:- What happens to the respiratory process in a man going up a hill?
Popular Questions of Class 11 Biology
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- Q:-
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
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Recently Viewed Questions of Class 11 Biology
- Q:-
List the hormones secreted by the following:
(a) Hypothalamus
(b) Pituitary
(c) Thyroid
(d) Parathyroid
(e) Adrenal
(f) Pancreas
(g) Testis
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(i) Thymus
(j) Atrium
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Write short notes on the functions of the following hormones,
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(d) Androgens
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(b) Forebrain
(c) Midbrain
(d) Hindbrain
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(g) Cochlea
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10 Comment(s) on this Question
The maximum volume of air a person can breathe in after a forced expiration this includes ERV ,TV and IRV for the maximum volume of air a person can breathe out after a forced inspiration
Maximum amount of air that can be inhaled after a forced expiration
Significance must be in points .....or in more detailed way .... Its easy to learn ..... But its just ok okk
Significance must be in detail ....its easy to learn or be in points.... But it just ok ok
I don't understand its significance.
Thank you sir for your answer
Can you tell me about its bad effect
Good but have a doubt
It have any bad effect also
Superb by the way....
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