When the oxygen supply to the tissue is inadequate,the condition is
dyspnea
hypoxia
asphyxia
apnea
The total number of lobes and alveoli present in both the lungs of man are
17 and 30 million, respectively
5 and 300 million, respectively
19 and 300 million, respectively
18 and 300 lakh, respectively
By which mechanism, oxygen is transported from lungs to cells?
Diffusion
Facilitated diffusion
Transpiration
Osmosis
Which of the following statements are true/false?
I. The blood transports carbon dioxide comparatively easily because of its highest solubility.
II. Approximately 8.9% of carbon dioxide is transported being dissolved in the plasma of blood.
III. The carbon dioxide produced by the tissues, diffuses passively into the blood stream and passes into red blood corpuscles and react with water to form H2CO3.
IV. The oxyhaemoglobin (HbO2) of the erythrocytes is basic.
V. The chloride ions diffuse from plasma into the erythrocytes to maintain ionic balance.
I,III and V are true, II and IV are false
I,III and V are false, II and IV are true
I,II and IV are true, III and V are false
I,II and IV are false, III and V are true
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
After deep inspiration,capacity of maximum expiration of lung is called
total lung capacity
functional residual capacity
vital capacity
inspiratory capacity
Which one is the cofactor of carbonic anhydrase?
Iron
Zinc
Copper
Magnesium
Which one of the following has the smallest diameter?
Right primary bronchus
Left primary bronchus
Trachea
Respiratory bronchiole
When Carbon dioxide concentration in blood increases, breathing becomes
shallower and slow
there is no effect on breathing
slow and deep
faster and deeper
When the body is rapidly oxidising fats, excess ketone bodies accumulate resulting in
pyruvic acid
lactic acid
ketoacidosis
ATP
