Although much carbon dioxide is carried in blood, yet blood does not become acidic because
CO2 is continuously diffused through the tissues and is not allowed to accumulate
CO2 combines with water to form H2CO3, which is neutralized by Na2CO3
In CO2 transport, blood buffers play an important role
CO2 is absorbed by leucocytes
Pick the correct statement.
The contraction of internal intercostal muscles lifts up the ribs
The RBCs transport oxygen only
The thoracic cavity is anatomically an air tight chamber
Healthy man can inspire approximately 500mL of air per minute
On high mountains, difficulty in breathing is due to
decrease in partial pressure of oxygen
decrease in amount of oxygen
increase in carbon dioxide concentration
All of the above
The vital capacity of human lung is equal to
500 mL
4600 mL
5800 mL
2300 mL
When the body is rapidly oxidising fats, excess ketone bodies accumulate resulting in
pyruvic acid
lactic acid
ketoacidosis
ATP
When the oxygen supply to the tissue is inadequate,the condition is
dyspnea
hypoxia
asphyxia
apnea
Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of
diapharagm
neck
tongue
epiglottis
When temperature decreases oxyhaemoglobin curve will become
more steep
straight
parabola
All of these
During inspiration, the diaphragm
expands
shows no change
contracts and flattens
relaxes to become dome-shaped
Haemoglobin of the human blood forms a stable complex compound with which of the following gas leading to death?
Oxygen
Carbon dioxide
Carbon monoxide
Nitrogen
