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.Management Sciences
Category: Respiratory System
Energy expenditure during normal breathing____________?
A. 25% – 50% of total energy spent
B. 50% -75% of total energy spent
C. 15% – 20% of total energy spent
D. 2% – 3% of total energy spent
Oxygen dissociation curve shifts to the right by all of the following except_____________?
A. Rise in temperature
B. Rise in carbon dioxide tension
C. Rise in pH
D. Rise in H+ ion
A decrease in the arterial PO2 is seen in______________?
A. Decrease in hemoglobin concentration of arterial blood
B. Paralysis of inspiratory muscles
C. Sluggish blood flow
D. High altitudes
During the initial part of inspiration, which of the following does not occur ?
A. Intrapulmonary pressure falls
B. Intra thoracic pressure rises
C. Intra-abdominal pressure rises
D. The partial pressure of O2 in dead space rises
What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?
A. P50 and oxygen affinity decrease
B. P 50 and oxygen affinity increase
C. P 50 decreases and the oxygen affinity increases
D. P50 increase and the oxygen affinity decreases
Kussmamul’s respiration occurs in response to_______________?
A. Decrease in pH of blood
B. Increase in pH of blood
C. Obstructive pulmonary disease
D. Carbon monoxide poisoning
In cases of hypercapnia there is_______________?
A. Increased pH of blood
B. Decreased pH of blood
C. Remains same
D. Increased oxygen concentration in blood
The type of hypoxia present in high attitude is_____________?
A. Anemic Hypoxia
B. Hypoxic Hypoxia
C. Stagnant Hypoxia
D. Histotoxic Hypoxia
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