The exchange of gases in the alveoli of the lungs takes place by
Osmosis
Simple diffusion
Passive transport
Active transport
B.
Simple diffusion
Oxygen diffuses from alveoli to deoxygenated blood, and carbon dioxide diffuses from deoxygenated blood to alveoli by simple diffusion. Diffusion is defined as, the flow of the substance (gases) from a region of their higher concentration to a region of lower concentration.
The faster breathing in high fever is due to the
Additional requirement of O2 for the invader germs
High temperature of the body
Mental worry of a patient
Loss of appetite
During inspiration, the diaphragm
expands
shows no change
contracts and flattens
relaxes to become dome- shaped
After a deep inspiration and maximum expiration, the capacity of lungs is known as
vital capacity
tidal volume
IRV
ERV
Which of the following animals possess non-elastic lungs with elastic air sacs connected to them?
Reptiles
Birds
Amphibians
Mammals
Haldane effect refers to
More acidity in the blood
Less acidity in the blood
More basicity in the blood
Less basicity in the blood
From which of the following plant is a medicine for respiratory disorders obtained?
Ephedra
Eucalyptus
Cannabis
Saccharum
