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Mcqs MBBS Exams India
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(Single Best Answer) Question 151: Afferent component of corneal reflex is mediated by ?
A) Vagus nerve
B) Facial nerve
C) Trigeminal nerve
D) Glossopharyngeal nerve
Answer (Select an option above to get the answer):
(Single Best Answer) Question 152: The first reflex response to appear as spinal shock wears off in humans is ?
A) Tympanic reflex
B) Withdrawal reflex
C) Neck righting reflex
D) Labyrinthine reflex
Answer (Select an option above to get the answer):
(Single Best Answer) Question 153: The maintenance of posture in a normal adult human being depends upon ?
A) Integrity of reflex arc
B) Muscle power
C) Type of muscle fibres
D) Joint movements in physiological range
Answer (Select an option above to get the answer):
(Single Best Answer) Question 154: Which of the following secretions has a very high pH ?
A) Gastric juice
B) Pancreatic juice
C) Bile in gall bladder
D) Saliva
Answer (Select an option above to get the answer):
(Single Best Answer) Question 155: Testosterone production is mainly contributed by ?
A) Leydig cells
B) Sertoli cells
C) Seminiferous tubules
D) Epididymis
Answer (Select an option above to get the answer):
(Single Best Answer) Question 156: Which of the following organs is not involved in calcium homeostasis ?
A) Kidneys
B) Skin
C) Intestines
D) Lungs
Answer (Select an option above to get the answer):
(Single Best Answer) Question 157: The prime driving force for counter current multiplier system is ?
A) Medullary hyperosmolarity
B) Reabsorption of Na+ in thick ascending limb
C) Action of ADH via aquaporin channels
D) Urea recycling
Answer (Select an option above to get the answer):
(Single Best Answer) Question 158: The tubuloglomerular feedback is mediated by ?
A) Sensing of Na+ concentration in the macula densa
B) Sensing of Cl- concentration in macula densa
C) Sensing NaCl concentration in the macula densa
D) Opening up of voltage gated Na+ channels in afferent arteriole
Answer (Select an option above to get the answer):
(Single Best Answer) Question 159: The cell bodies of orexinergic neurons are present in ?
A) Locus coeruleus
B) Dorsal raphe
C) Lateral hypothalamic area
D) Hippocampus
Answer (Select an option above to get the answer):
(Single Best Answer) Question 160: In human being, the least useful physiological response to low environmental temperature is ?
A) Shivering
B) Vasoconstriction
C) Release of thyroxine
D) Piloerection
Answer (Select an option above to get the answer):

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