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प्रश्न
Distinguish between inspiration and expiration.
उत्तर
| No. | Inspiration | Expiration |
| i. | Atmospheric air is taken into the lungs. | Air rushes out from the lungs. |
| ii. | It is an active process. | It is a passive process. |
| iii. | Contraction of external intercostal muscles occurs. | Relaxation of external intercostal muscles occurs. |
| iv. | Diaphragm contracts and becomes flattened. | Diaphragm relaxes and becomes original dome shaped. |
| v. | Increase in volume of thoracic cavity. | Decrease in volume of thoracic cavity. |
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संबंधित प्रश्न
Describe non-cyclic photophosphorylation with schematic representation. Give its significance.
Answer briefly the following:
What is the difference between breathing and respiration?
Choose the correct alternative.
_______ muscles contract when the external intercostal muscles contract.
In human respiration, chemical energy is released in the form of ______.
With the help of labelled diagram explain the exchange of gases between alveolus and capillary.
Intercostal muscles are found between the ______.
Make the correct pairs.
| Column – I | Column – II |
| (P) Tidal volume | i. 1000 to 1100 ml |
| (Q) Residual volume | ii. 500 ml |
| (R) Expiratory reserve volume | iii. 2500 to 3000 ml |
| (S) Inspiratory reserve volume | iv. 1100 to 1200 ml |
For which of the following reasons stepwise cellular respiration is useful?
____________ in mammals do not help in respiration.
When you hold your breath, identify the gas changes that occur in blood and would first lead to the urge to breathe.
