MediumZoologyBreathing and Exchange of Gases
+4 / -1
Inspiration occurs if the pressure within the lungs (intra-pulmonary pressure) is:
A
Higher than atmospheric pressure
B
Lower than atmospheric pressure
C
Equal to atmospheric pressure
D
Zero
Explanation
For air to flow into the lungs, the pressure inside must be negative (lower) relative to the atmospheric pressure.
Previous
Movement of air into and out of the lungs is carried out by a pressure gradient
NextWhich of the following helps in increasing the volume of the thoracic chamber?
More from Breathing and Exchange of Gases
Medium
The figure given below shows a small part of human lung where exchange of gas takes place. In which
HardMatch the Following: (a) Asthma 1. Inflammation of nasal tract(b) Bronchitis 2. Spasm of tracheal mu
HardThe rate of breathing is primarily controlled by the concentration of:
MediumThe respiratory rhythm centre is located in the:
MediumThe enzyme required for the transport of CO2 as bicarbonate is:
MediumEvery 100 mL of deoxygenated blood delivers approximately ______ of CO2 to the alveoli.
Practice Zoology Exams
Full-length mock tests with detailed analytics, rank, and percentile.
Browse Exams