Respiratory System Physiology Test 05 Online Preparation

1. Forced deep breathing for few minutes in a person sitting at rest may be followed bya temporary cessation in breathing which is due to?

A. Too much O2 and very little CO2 in his blood

B. Too much amount of carbondioxide in his blood

C. None of these reasons

D. Too much amount of O2 in his blood

2. Under certain conditions, an increase in P50 value of haemoglobin would bring which of these changes in the affinity of pigment to combine with oxygen?

A. Fall

B. No change

C. Rise

D. First rise and then fall

3. A person living at high altitude has likely the higher number of RBCs per unit volume because of which of the following reasons?

A. Air is less dense

B. None of these

C. Air is not polluted and is clear

D. More sunshine is available

4. A person belonging to sea-level town migrates to high altitude of about 8000 feet then his blood after 15 days will show?

A. Reduction in number of RBCs

B. Increase in his blood volume

C. Greater number of RBCs and more Hb

D. Increase in number of WBCs

5. A person will die of oxygen dificiency when under certain conditions his P50 value of Hb rises to 100 mm Hg, the reason being that?

A. He cannot load enough oxygen in the lungs

B. He can neither load nor unload oxygen in the lungs

C. He can load enough oxygen but cannot unload it

D. He suffers with degradation and cannot function normally

6. In which of these forms major amount of carbondioxide is transported in our blood?

A. As sodium carbonate

B. As carbamino compounds

C. As bicarbonate ions

D. As carbonic acid

7. Faster breathing during condition of fever is mainly due to which of the following facts?

A. We need additional amount of oxygen for the invading organisms

B. Nervousness of the patient

C. High temperature of our body

D. Loss of appetite

8. By which of the following the medullary respiratory centre is affected directly?

A. Physically

B. Chemically

C. Neuronally

D. All of these

9. Which one of the following statements define Bohr effect?

A. None of these

B. A rise in P50 with an increase in pH and decrease in PCO2

C. A rise in P50 with a decrease in carbondioxide concentration

D. A rise in P50 with a increase in carbondioxide concentration

10. The dissociation of oxyhaemoglobin would increase under a given concentration in blood in case?

A. pH of blood falls

B. pH of blood raises

C. Free fatty acid concentration falls in blood

D. Concentration of CO2 falls

Respiratory System Physiology Test 05 Online Preparation

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