White Matter Flashcards
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
A, D, E
Efferent impulse from basal nuclei can control the motor cortex of the brain.
[ True / False ]
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)
The internal capsule can be compared to a _______ passing between ________ laterally, _______ and caudate nucleus medially.
The internal capsule can be compared to a [narrow‑gate] passing between [lantiform nucleus] laterally, [thalamus] and caudate nucleus medially.
Thalamic radiation carry [______] sensation.
Somatic @ auditory
Thalamic radiation carry [somatic] sensation.
_______ radiation carry visual sensation
[retrolentiform] radiation carry visual sensation.
Sublentiform radiation carry ______ sensation.
Sublentiform radiation carry [auditory] sensation.
White matter of brain consists of ________ nerve fibres and _______.
White matter of brain consists of [myelinated] nerve fibres and [neuroglia].
Regarding the fibres of corpus callosum:
Fibres passing through genu are __________.
(forceps major @ forceps minor @ tapetum)
Regarding the fibres of corpus callosum:
Fibres passing through genu are [forceps minor].
Regarding the fibres of corpus callosum:
Fibres passing through splenium are __________.
(forceps major @ forceps minor @ tapetum)
Fibres passing through splenium are [forceps major]
Regarding the fibres of corpus callosum:
Fibres passing through body are _______.
(forceps major @ forceps minor @ tapetum)
Fibres passing through body are [tapetum].
Internal capsule consists of descending fibres only.
[True / False ]
[False]
Both ascending and descending
The basal nuclei include
[A] caudate nucleus [B] lentiform nucleus [C] Parahippocampus [D] geniculate body [E] Amygdaloid nucleus
A, B, E
Lesion in Basal nuclei may cause
[A] loss of sensory function.
[B] Hyperkinetic motor disorder
[C] Hypokinetic motor disorder
[D] Parkinson’s disease
B,C,D
Basal nuclei are directly connected with spinal cord.
[True / False ]
False
The fibres in internal capsule include
[A] Corticonuclear fibres [B] Frontopontine fibres [C] pyramidal fibres [D] Thalamocortical fibres [E] Rubrospinal fibres
A B C D
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]
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].
Corpus callosum is commissural fibre.
[True / False]
True
Internal capsule fibres continues above as ________ and end in __________.
Internal capsule fibres continues above as [corona radiata] and end in [cerebral cortex].
Sensation from ________ geniculate body –> ______ radiation –> cerebral cortex area __ (vision).
Sensation from [lateral] geniculate body –> [optic radiation] –> cerebral cortex area 17 (vision).
Sensation from _____ geniculate body –> _______ radiation –> cerebral cortex area __,__ (hearing).
Sensation from [medial] geniculate body –> [auditory radiation] –> cerebral cortex area 41,42 (hearing).
