The expiratory reserve volume will be
1000 mL
2000mL
4000mL
5000mL
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
Dissociation curve of haemoglobin is
sigmoid
parabolic
straight line
hyperbolic
Which one is the cofactor of carbonic anhydrase?
Iron
Zinc
Copper
Magnesium
Floating ribs of thoracic cage are
1st to 7Th pair
8th to 9th pair
8th to 10th pair
11th to 12th pair
The factor which does not affect the rate of alveolar diffusion is
solubility of gases
thickness of the membranes
pressure gradient
reactivity of the gases
The movement of chloride ions into erythrocytes from the plasma to maintain osmotic balance during transport of gases is known as
Chlorination
Hamburger phenomenon
Bicarbonate shift
Carbon dioxide transport
If a large number of people are enclosed in a room,then
oxygen decreases and carbon dioxide increases
oxygen increases and carbon dioxide decreases
both oxygen and carbon dioxide decreases
both oxygen and carbon dioxide increases
When a sea diver goes very deep he has to breathe on compressed air at high pressure. After somtime, he loses his strength to work and feel drowsy. This is because of
compressed air
more carbon dioxide diffusing into molecules
more nitrogen diffusing in blood and body fats
nervous system does not work properly
Which one of the following has the smallest diameter?
Right primary bronchus
Left primary bronchus
Trachea
Respiratory bronchiole
