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Mcqs MBBS Exams India
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Home >> Physiology >> Mcqs Page 24
(Single Best Answer) Question 231: Reason for CO2 diffusion rapidly through alveoli is ?
A) Less dense
B) More soluble
C) Less molecular weight
D) Less pCO2 in the alveoli
Answer (Select an option above to get the answer):
(Single Best Answer) Question 232: Why is intrapleural pressure negative ?
A) Alveolar pressure negative
B) Surfactant is equally distributed
C) Lymphatic drainage
D) Upper airway ring cartilage
Answer (Select an option above to get the answer):
(Single Best Answer) Question 233: Patient with prolonged aPTT and PT suggests that the defect is in ?
A) Intrinsic pathway
B) Extrinsic pathway
C) Common pathway
D) Platelet defect
Answer (Select an option above to get the answer):
(Single Best Answer) Question 234: The important physiological function of bile acids is ?
A) They facilitate the absorption of dietary fats
B) They conjugate with toxic substances, and thus facilitate their excretion
C) They facilitate the excretion of breakdown products of haemoglobin
D) They facilitate the absorption of vitamin B12
Answer (Select an option above to get the answer):
(Single Best Answer) Question 235: Which of the following is not a second messenger
A) cAMP
B) IP3
C) Gyanylyl Cyclase
D) Diacyl glycerol
Answer (Select an option above to get the answer):
(Single Best Answer) Question 236: All of the following increase blood supply in exercising muscle except ?
A) Local metabolites
B) Sympathetic stimulation
C) Cholinergic stimulation
D) Inhibition of beta receptors
Answer (Select an option above to get the answer):
(Single Best Answer) Question 237: CSF pressure is mainly regulated by ?
A) Rate of CSF absorption
B) Rate of CSF formation
C) Cerebral blood flow
D) Venous pressure
Answer (Select an option above to get the answer):
(Single Best Answer) Question 238: Without external cues, the sleep-wake cycle in humans ?
A) Does not continue
B) Continue with cycle length of 24 hours
C) Continue with cycle length of less than 24 hours
D) Continue with cycle length of more than 24 hours
Answer (Select an option above to get the answer):
(Single Best Answer) Question 239: All of the following are true for ADH, except ?
A) Acts on distal tubule and increase permeability
B) Increased secretion when plasma osmolality is low
C) Neurosecretion
D) Post-operative increase in secretion
Answer (Select an option above to get the answer):
(Single Best Answer) Question 240: Critical Closing volume is ?
A) Volume at the end of forceful inspiration
B) Volume at the end of forceful expiration
C) Volume remaining after Functional Residual Capacity is measured
D) Close to residual volume
Answer (Select an option above to get the answer):