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Mcqs MBBS Exams India
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(Single Best Answer) Question 171: With which one of the following Lower motor neuron lesions are associated ?
A) Flaccid paralysis
B) Hyperactive stretch reflex
C) Spasticity
D) Muscular incoordination
Answer (Select an option above to get the answer):
(Single Best Answer) Question 172: Neuronal degeneration is seen in all of the following except ?
A) Crush nerve injury
B) Fetal development
C) Senescence
D) Neuropraxia
Answer (Select an option above to get the answer):
(Single Best Answer) Question 173: In which of the following a reduction in arterial oxygen tension occurs ?
A) Anaemia
B) CO poisoning
C) Moderate exercise
D) Hypoventilation
Answer (Select an option above to get the answer):
(Single Best Answer) Question 174: Distribution of blood flow is mainly regulated by the ?
A) Arteries
B) Arterioles
C) Capillaries
D) Venules
Answer (Select an option above to get the answer):
(Single Best Answer) Question 175: Urinary concentrating ability of the kidney is increased by ?
A) ECF volume contraction
B) Increase in RBF
C) Reduction of medullary hyperosmolarity
D) Increase in GFR
Answer (Select an option above to get the answer):
(Single Best Answer) Question 176: Which one of the following statements is true regarding water reabsorption in the tubules ?
A) The bulk of water reabsorption occurs secondary to Na+ reabsorption
B) Majority of facultative reabsorption occurs in proximal tubule
C) Obligatory reabsorption is ADH dependent
D) 20% of water is always reabsored irrespective of water balance
Answer (Select an option above to get the answer):
(Single Best Answer) Question 177: The vasodilatation produced by carbondioxide is maximum in one of the following ?
A) Kidney
B) Brain
C) Liver
D) Heart
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(Single Best Answer) Question 178: All of the following factors normally increase the length of the ventricular cardiac muscle fibres except ?
A) Increased venous tone
B) Increased total blood volume
C) Increased negative intrathoracic pressure
D) Lying-to-standing change in posture
Answer (Select an option above to get the answer):
(Single Best Answer) Question 179: The first physiological response to high enviornmental temperature is ?
A) Sweating
B) Vasodilation
C) Decreased heat production
D) Non-shivering thermogenesis
Answer (Select an option above to get the answer):
(Single Best Answer) Question 180: S.A. node acts as a pacemaker of the heart because of the fact that it ?
A) Is capable of generating impulses spontaneously
B) Has rich sympathetic innervations
C) Has poor cholinergic innervations
D) Generates impulses at the highest rate
Answer (Select an option above to get the answer):