Fill up the blanks in the following paragraph by selecting the correct option.
The movement of air into and out of the lungs is carried out by creating a (i) between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii) than the atmospheric pressure. Expiration takes place when the intra-pulmonary pressure is (iii) than the atmospheric pressure. Inspiration is initiated by (iv) the of diaphragm which (v) the volume of thoracic chamber in the antero-posterior axis.
(i) | (ii) | (iii) | (iv) | (v) | ||||||
(a) |
| concentration | gradient | less | higher | relaxation | increases | |||
concentration | ||||||||||
gradient | ||||||||||
(b) |
| concentration | gradient | higher | less | contraction | decrease | |||
concentration | ||||||||||
gradient | ||||||||||
(c) |
| pressure | gradient | higher | less | relaxation | decrease | |||
pressure | ||||||||||
gradient | ||||||||||
(d) |
| pressure | gradient | less | higher | contraction | increases | |||
pressure | ||||||||||
gradient |
Text Solution
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