Short Answer Type
True Or FalseA.
Expiration leaves a small residual volume in the lungs.B.
The lungs are completely emptied and refilled with fresh air during breathing.C.
The right lung is larger than the left lung in human beings.D.
The energy carrying compound in the living cell is ATP.E.
Most of the oxygen and carbon dioxide get dissolved in the plasma and are carried in solution.F.
The affinity of haemoglobin for carbon monoxide is more than its affinity for oxygen.G.
The “mountain sickness” in persons climbing to high altitudes without the aid of oxygen cylinders is due to arterial hypoxia.H.
The regulatory centre for respiration is situated in cerebral cortex.Short Answer TypeTrue Or FalseSelect rue and false :
A.
Major amount of carbon dioxide (CO2) from the tissues is transported to the lungs in the form of bicarbonates.B.
The condition in which the body suffers from acute oxygen shortage is called hypoxia.C.
The largest quantity of air that can be expired after a maximum inspiratory effort is called the tidal volume of the lungs.D.
Vital capacity represents the maximum capacity to ventilate the lungs.E.
Oxyhaemoglobin can hold much less carbon dioxide (CO2) in the form of carbaminohaemoglobin than what deoxyhaemo-globin can.F.
A rise in PCO2 increases the affinity of oxygen to haemoglobin.G.
External respiration may be called breathing.H.
Hydra respires by its general body surface.Short Answer TypeTrue Or False
Long Answer TypeDefine oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern ?
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