Q133
General ScienceBiology
Pressure within the lungs is called
- a.Inter-pulmonary pressure.
- b.Intra-pulmonary pressure.
- c.Interstitial pressure.
- d.Alveolar pressure.
Answer: (B) Intra-pulmonary pressure.
The pressure of the air inside the lungs is called intrapulmonary pressure; it falls below atmospheric pressure during inspiration and rises above it during expiration. Interstitial pressure is the pressure of tissue fluid, and 'inter-pulmonary' is not a standard term. Alveolar pressure describes the air pressure in the alveoli specifically, while intrapulmonary pressure is the standard name for the pressure within the lungs as a whole.