Select the correct events that occur during inspiration.

a. Contraction of diaphragm

b Contraction of external inter-costal muscles

c. Pulmonary volume decreases

d.  Intra pulmonary pressure increases

1. (c) and (d)

2. (a), (b) and (d)

3. only (d)

4. (a) and (b) 

Subtopic:  Respiratory System: Pulmonary Ventilation |
 67%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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Select the correct statement:

1. Expiration occurs due to external intercostal muscles.
2. Intrapulmonary pressure is lower than atmospheric pressure during inspiration.
3. Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure.
4. Expiration is initiated due to the contraction of the diaphragm.

Subtopic:  Respiratory System: Pulmonary Ventilation |
 84%
From NCERT
NEET - 2019
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh