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Physiology: Daily Free Online Mock Test 75

Author: rxpg, Posted on Thursday, August 28 @ 00:00:00 IST by rxpg  

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Multiple Choice Test

1) Which of the following hypothalamic nuclei is responsible for controlling the normal circadian rhythm

One answer only.
   a) Suprachiasmatic nuclei
   b) Ventromedial nucleus
   c)Arcuate nucleus
   d) Paraventricular nucleus

2) The chief motor nucleus of thalamus is :

One answer only.
   a) Ventrolateral
   b) Ventroposterior medial
   c)Ventroposterior lateral
   d) Midline

3) All are true regarding decerebration except :

One answer only.
   a) Transection at superior border of pons results in decerebration
   b) The structures left behind are the spinal cord, medulla, pons and cerebellum
   c) Decerebrate rigidity
   d) No stage of spinal shock
   e) Tonic neck and tonic labyrinthine reflexes are absent

4) Presynaptic inhibition is mostly by :

One answer only.
   a) GABA
   b) Glycine
   c) Glutamate
   d) Aspartate

5) There are no interneurons in which of the following reflexes :

One answer only.
   a) Swallowing
   b) Stretch
   d) Visual

6) Spinothalamic tract does not contain fibres for :

One answer only.
   a) Touch
   b) Pressure
   d) Discriminatory touch

7) The first relay station for pain sensation is :

One answer only.
   a) Dorsal root (spinal) ganglion
   b) Spinal cord
   d) Thalamus

8) Regarding the sensory cortex, all are true except :

One answer only.
   a) SI projects to S II / posterior parietal cortex
   b) Lesions of S I affect the pain sensibility the most
   c) There is point for point localisation
   d) It shows plasticity
   e) Subcortical perception of sensation is possible

9) Efferent fibers from the cortex of the cerebellum are composed entirely of :

One answer only.
   a) Climbing fibers
   b) Mossy fibers
   c) Betz cells
   d)Granule cells
   e) Purkinje cells

10) A thermo regulatory response of man controlled by cholinergic sympathetics is :

One answer only.
   a) Brown adipose tissue thermogenesis
   b) Shivering thermogenesis
   c) Sweat secretion
   d) Thermoregulatory behaviour

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