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Question 1
Question
A 4-7 HZ rhythm normally occurs in:
Answer
-
Hypothalamus
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Hippocampus
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Parito-occipital area
-
Frontal area
Question 2
Question
all are true about RAS EXCEPT:
Answer
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I essential for initiation & maintainence of consciousness
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Is a complex polysynaptic system which extends from the brain stem to the spinal cord
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Receives impulses from ascending sensory tracts
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sends impulses to Non specific thalamic nuclei from which impulses are projected diffusely to all parts of the Cortex
Question 3
Question
Pleasure centers & punishment centers are located in :
Answer
-
Mammillary bodies
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Limbic system
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Precentral gyrus
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Prefrontal gyrus
Question 4
Question
Hypothalamus protects the body against hypolycemia by:
Answer
-
Decrease insulin release
-
Increase glucagon release
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Increase sympathetic activity & epinephrine release
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Increase thyroxine release
Question 5
Question
what is true about memory :
Answer
-
Implict memory is the unconscious recall of information
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Explicit memory is stored in basal ganglia and cerebellum
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Sensory memory is the long term recall of information
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Short term memory is due to protein synthesis
Question 6
Question
The normal range of IOP is:
Answer
-
5-20 mmHg
-
10-24 mmHg
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15-30 mmHg
-
20-40 mmHg
Question 7
Question
Lens has high RI due to :
Answer
-
Highly curved posterior surface
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It's transparency
-
High protein concentration in lens
-
It's avascular
Question 8
Question
Center of accommodation reflex is:
Answer
-
Edinger westiphal nucleus
-
Pretectal area of midbrain
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Lateral Geniculate body
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Superior colliculus
Question 9
Question
All the following causes Myopia EXCEPT:
Answer
-
Aphakia
-
Keratonous
-
Spasm of ciliary muscles
-
Lens dislocation
Question 10
Question
Pilocarpine causes miosis by:
Answer
-
Stimulates muscarinic receptors
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Inhibits cholinesterase enzyme
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Stimulates Edinger westiphal nucleus
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None of above
Question 11
Question
What part of retina contains only cones and is the area of greatest visual acuity :
Answer
-
Ciliary body
-
Ora serrata
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Fovea centralis
-
Optic disk
Question 12
Question
The round window is connected directly to which:
Answer
-
Scala tympani
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External auditory meatus
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Cochlear duct
-
Scala vestibuli
Question 13
Question
Which of the following is not a character of tympanic membrane:
Answer
-
Resonator
-
Amplifies sound vibration
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Aperiodic
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Damped
Question 14
Question
In middle ear:
Answer
-
Air limits the movement of the bony ossicles
-
Organ of corti overlies the basilar membrane
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It is filled with endolymph
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Air equalizes the pressure on the sides of the drum
Question 15
Question
Regarding olfaction :
Answer
-
Olfactory receptors are slowly adapting
-
The only sensation in the body not perceived in thalamus
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Olfactory receptors are widely distributed in the nasal cavity
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Olfactory receptors respond to stimulation is hyperpolarized
Question 16
Question
The lowest rate of plasma clearence is :
Answer
-
Creatinine
-
Glucose
-
Urea
-
Inulin
Question 17
Question
The glomerular filtration:
Answer
-
PH is not similar to plasma
-
Osmolality about 100
-
Its specific gravity is less than specific gravity of plasma
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Is totally free from Protien
Question 18
Question
What is the primary disturbance seen in metabolic acidosis:
Answer
-
Increased Na
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Increased K
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Decreased HCo3
-
None of above
Question 19
Question
External sphincter opened during micturition by:
Answer
-
Hypogastric n. , excitation
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Sacral parasympathetic n. , excitation
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Pudendal n. , inhibition
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Pudendal n. Excitation
Question 20
Question
The greater percentage of Na reabsorption in:
Answer
-
PCT
-
DCT
-
CT
-
Loop of henle
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