1q. human brain is more intelligent than monkey’s brain due to ?
- larger brain
- increased convulations
- increased brain area compared to body surface area
- more blood supply
answer: a. larger brain .
2q. ability to perceive shape and size is lost due to lesion of ?
- tractus gracilis
- tractus cuneatus
- spinothalamic tract
- spinoreticular tract
answer : b . tractus cuneatus .
3q. true about function of the brain are all except ?
- sensitive to hypoxia
- dependent on glucose
- uses fatty acid in starvation
- does not store energy
answer: c . brain uses ketone bodies in starvation .
4q. ablation of the somatosensory area I of the cerebral cortex leads to ?
- total loss of pain sensation
- total loss of touch sensation
- loss of tactile localization and not of two point discrimination
- loss of tactile localization and two point discrimination
answer: d . loss of both tactile localization and two point discrimination. If somatosensory area II is ablated then there will be alteration in pain sensation .
5q. structure of the brain involved in emotion ?
- limbic system
- basal ganglia
answer: b and d .
6q. motor aphasia refers to defect in ?
- peripheral speech apparatus
- verbal expression
- auditory comprehension
- verbal comprehension
answer: b . verbal expression . motor aphasia also known as expressive aphasia is a disorder of thought and word finding resulting in inadequate verbal expression .
7q. true stereopsis ( depth of perception ) is perceived due to the following ?
- overlay of contours
- motion parallax
- bi-nasal disparity
- linear perspective
answer: c . binasal disparity , this is also called horizontal disparity or retinal disparity or binocular disparity .
8q. the fibers from the contralateral nasal hemiretina project to the following layers of the lateral geniculate body ?
- layers 2,3,5
- layers 1,2,6
- layers 1,4,6
- layers 4,5,6
answer: c . layers 1,4,6 . the fibres from the ipsilateral temporal hemiretina end in layers 2,3,5 and the fibers from the contralateral nasal hemiretina project into the 1,4,6 layers .
9q. most afferent fibers from the lateral geniculate body terminate in which layer of the primar visual cortex ( area 17 ) ?
- layer 1
- layer 2 and 3
- layer 4
- layer 5 & 6
answer: c . layer 4 .
10q. the blobs of the visual cortex are associated with ?
- ocular dominance
- color processing
- saccadic eye movements
answer: c . color processing .