Thalamus Flashcards

exam 2

1
Q

relay station

A

thalamus

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2
Q

involved in the maintenance of homeostasis, the regulation of feeding, drinking and sexual activity , circadian rhythm, and emotional expression

A

hypothalamus

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3
Q

mesencephalon develops into the

A

midbrain

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4
Q

diencephalon develops into the

A

thalamus, epithalamus, hypothalamus, subthalamus

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5
Q

Theepithalamusis a small region of the diencephalon consisting of the _________, _______ nuclei, and _________.

A

Theepithalamusis a small region of the diencephalon consisting of the pineal gland, habenular nuclei, and stria medullaris thalami.

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6
Q

The pineal gland contains no true neurons, only

A

glial cells

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7
Q

The stria medullaris connects fibers from

A

the habenular nuclei with the limbic system

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8
Q

Fibers from neurons in the zona incerta project to many areas, including the _________, and may exert an _________ on the motor pathways.

A

including the cerebral cortex and may exert an inhibitory effect on motor pathways

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9
Q

white matter running between the basal ganglia and thalamus

A

internal capsule- fibers from CST and CBT

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10
Q

all sensory systems except the _________ project to the thalamus

A

olfactory system

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11
Q

medial geniculate body is associated with the

A

auditory system

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12
Q

lateral geniculate body is associated with

A

visual system

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13
Q

Geniculate pathway:

Inf collic——>__________——–>Heschl’s gyrus

A

medial genic

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14
Q

Geniculare pathway:

Optic tract——>__________—–>visual cortex

A

lateral genic

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15
Q

somatosensroy nuclei

A

VPL and VPM

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16
Q

VPL nuclei associated with

A

body

17
Q

VPM nuclei associated with

A

face

18
Q

Somatosensory pathway:

SPT, post cols——->______———>sensory cortex

A

VPL

19
Q

Somatosensory pathway:

Trigeminal (all modalities)——->_______—–>lower end of sensory cortex

A

VPM

20
Q

motor system nuclei

A

VA-basal ganglia and VL- cerebellum

21
Q

cingulate gyrus associated with the

A

limbic cortex

22
Q

regulation of membrane and emotion

A

limbic cortex

23
Q

Motor system:

GP——->_____——>Motor and motor association

A

VA- basal ganglia

24
Q

Motor system:

Deep nuclei——->_____——>Motor and motor association

A

VL- cerebellum

25
Q

Limbic system:

MB——> _____—->cingulate gyrus

Amygdala—->______—->Prefrontal Cortex

A

MB——> anterior—->cingulate gyrus

Amygdala—->DM—->Prefrontal Cortex

26
Q

the thalamus allows for modulation of signals they enter the cortex. this allows for?

A

selective attention

27
Q

Lacunar infarctsare smallinfarcts(2–20 mm in diameter) in the deep cerebral white matter, basal ganglia, or pons, presumed to result from the occlusion of

A

a single small perforating artery supplying the subcortical areas of the brain

28
Q

Degenerative changes in small blood vessels, marked by the accumulation of a glassy- or waxy-appearing lipid within the vessel wall

A

Lipohyalinosis

29
Q

A deposit or degenerative accumulation of lipid-containing plaques on the innermost layer of the wall of an artery

A

Microatheroma

30
Q

pure sensory stroke involves the ____ and ____ and that leads to

A

VPL and VPM and leads to loss of all sensation from body and face

31
Q

thalamic hemorrhage is associated with issues to the

A

internal capsule

32
Q

what is usually associated with thalamic hemorrhage which is an area of the brain prone to develop spont. intracerebral hemorrhage

A

Hypertension

33
Q

thalamic hemorrhage leads to

A

commonly contralateral hemianesthesia (numbness), mild hemiparesis, hemiataxia, and sometimes intolerable intractable severe dysesthetic pain in half of the body

34
Q

thalamic coma is caused by an infarct of the basilar artery that affects

A

reticular activating systems

35
Q

Association systems:

Cortex ———-> ______——–>Cortex

Limbic———->_______——–>Frontal

A

Cortex ———-> Pulvinar——–>Cortex

Limbic———->Dorsomedia——–>Frontal