White Matter

Question 1

Thalamocortical fibres are also described as

[A] ascending fibres from thalamus
[B] motor fibres
[C] descending fibres from thalamus
[D] thalamic radiation
[E] sensory fibres from thalamus

Answer 1

A, D, E

Question 2

Efferent impulse from basal nuclei can control the motor cortex of the brain.

[ True / False ]

Answer 2

True

Reason:
Basal nuclei receive afferent impulses from different parts of brain (including cerebral cortex)–> integrate afferent impulses–> send motor impulses to the same parts of brain (including cerebral cortex)

Question 3

The internal capsule can be compared to a _______ passing between ________ laterally, _______ and caudate nucleus medially.

Answer 3

The internal capsule can be compared to a [narrow‑gate] passing between [lantiform nucleus] laterally, [thalamus] and caudate nucleus medially.

Question 4

Thalamic radiation carry [______] sensation.

Somatic @ auditory

Answer 4

Thalamic radiation carry [somatic] sensation.

Question 5

_______ radiation carry visual sensation

Answer 5

[retrolentiform] radiation carry visual sensation.

Question 6

Sublentiform radiation carry ______ sensation.

Answer 6

Sublentiform radiation carry [auditory] sensation.

Question 7

White matter of brain consists of ________ nerve fibres and _______.

Answer 7

White matter of brain consists of [myelinated] nerve fibres and [neuroglia].

Question 8

Regarding the fibres of corpus callosum:

Fibres passing through genu are __________.

(forceps major @ forceps minor @ tapetum)

Answer 8

Regarding the fibres of corpus callosum:

Fibres passing through genu are [forceps minor].

Question 9

Regarding the fibres of corpus callosum:

Fibres passing through splenium are __________.

(forceps major @ forceps minor @ tapetum)

Answer 9

Fibres passing through splenium are [forceps major]

Question 10

Regarding the fibres of corpus callosum:

Fibres passing through body are _______.

(forceps major @ forceps minor @ tapetum)

Answer 10

Fibres passing through body are [tapetum].

Question 11

Internal capsule consists of descending fibres only.

[True / False ]

Answer 11

[False]

Both ascending and descending

Question 12

The basal nuclei include

[A] caudate nucleus
[B] lentiform nucleus 
[C] Parahippocampus
[D] geniculate body
[E] Amygdaloid nucleus

Answer 12

A, B, E

Question 13

Lesion in Basal nuclei may cause

[A] loss of sensory function.
[B] Hyperkinetic motor disorder
[C] Hypokinetic motor disorder
[D] Parkinson’s disease

Answer 13

B,C,D

Question 14

Basal nuclei are directly connected with spinal cord.

[True / False ]

Answer 14

False

Question 15

The fibres in internal capsule include

[A] Corticonuclear fibres 
[B] Frontopontine fibres 
[C] pyramidal fibres
[D] Thalamocortical fibres
[E] Rubrospinal fibres

Answer 15

A B C D

Question 16

The fibres that connect cerebral cortex & other parts of CNS are _________.

The fibres that connect different areas of same cortex are __________.

The fibres that connect the same areas of opposite cortex are _________

(Projection fiber @ Commissural fiber @ Association fiber]

Answer 16

The fibres that connect cerebral cortex & other parts of CNS are [Projection fibers].

The fibres that connect different areas of same cortex are [Association fibers].

The fibres that connect the same areas of opposite cortex are [Commissural fibers].

Question 17

Corpus callosum is commissural fibre.

[True / False]

Answer 17

True

Question 18

Internal capsule fibres continues above as ________ and end in __________.

Answer 18

Internal capsule fibres continues above as [corona radiata] and end in [cerebral cortex].

Question 19

Sensation from ________ geniculate body –> ______ radiation –> cerebral cortex area __ (vision).

Answer 19

Sensation from [lateral] geniculate body –> [optic radiation] –> cerebral cortex area 17 (vision).

Question 20

Sensation from _____ geniculate body –> _______ radiation –> cerebral cortex area __,__ (hearing).

Answer 20

Sensation from [medial] geniculate body –> [auditory radiation] –> cerebral cortex area 41,42 (hearing).