thalamus Flashcards

1
Q

what is the function of the lateral group of thalamic nuclei

A

integrates sensory information and influences emotional states

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2
Q

what is the function of the ventral group of thalamic nuclei

A

projects sensory information to the primary sensory cortex
relays information from cerebellum and basal nuclei to motor area of cerebral cortex

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3
Q

where is the subthalamic nucleus

A

located in the ventrolateral part of the subthalamus immediately medial to the internal capsule it has the shape of a biconvex lens in coronal section.

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4
Q

what does the posterior cerebral artery give rise to

A

posterior choroidal arteries and posterior thalamoperforating arteries

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5
Q

what is the function of the medial group of thalamic nuclei

A

integrates sensory information for projection to the frontal lobes

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6
Q

what nuclei are part of the posterior group of thalamic nuclei

A

pulvinar, lateral and medial geniculate nuclei

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7
Q

what is the inferior surface of the thalamus

A

the subthalamus and hypothalamus

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8
Q

what is the lateral surface of the thalamus

A

the caudate nucleua, thalamostriate vein and the stria terminalis nerve fiber bundle

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9
Q

what is the epithalamus

A

small part of the diencephalon that consists of the pineal gland and the habenula

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10
Q

what are the 5 main thalamic nuclei groups

A

anterior, medial, posterior, lateral, ventral

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11
Q
A
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12
Q

what is the function of the anterior group of thalamic nuclei

A

part of limbic system

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13
Q

where are intralaminar nuclei found

A

the Internal medullary lamina.

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14
Q

what is the function of the subthalamic nucleus

A

connections with the globus pallidus and the substantia nigra and is important in the control of movement.

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15
Q

where do thalamic nuclei project

A

to ipsilateral cerebral coretx (except the reticular nucelus)

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16
Q

what is in the External/lateral medullary lamina

A

consists of thalamocortical and corticothalamic fibres

17
Q

what is the internal medullary lamina

A

located a thin layer of nerve fibres composed of some of the afferent and efferent connections of thalamic nuclei

18
Q

what is the tuber cinereum

A

a hollow eminence between chiasm and hypothalamus

19
Q

what is the zona incerta

A

a rostral extension of the brainstem reticular formation.

20
Q

what does the posterior communicating artery give rise to

A

anterior thalamoperforating arteries

21
Q

In most individuals the two thalami are joined across the thin slit of the ventricle by the ________

A

interthalamic adhesion or Massa intermedia.

22
Q

what are the 2 notable cell groups in the subthalamus

A

the subthalamic nucleus and the zona inserter.

23
Q

what arteries supply the thalamus

A

posterior communicating artery
posterior cerebral artery
anteriochoroidal artery

24
Q

what forms the lateral wall of the 3rd ventricle

A

thalamus and hypothalamus

25
what is the function of the pulvinar nuclei
integrates sesnory information for projection to association areas of cerebral cortex
26
what is the habenula
It serves autonomic function and emotive decision making. has connections with the limbic system.
27
what is the function of the internal medullary lamina
provides the basis for dividing the main part of the thalamus into three nuclear masses; anterior, medial and lateral.
28
what is the function of the thalamus
relay between subcortical areas and cortex all sensory systems except olfactory nucleus connect to a nucleus in the thalamus
29
what is the pineal gland
an endocrine organ that synthesizes melatonin and is important in the control of sleep waking cycle and in the regulation of puberty onset.
30
where does the reticular nucleus project
receives inputs from other thalamic nuclei and the cerebral cortex and sends out projections that circle back to the thalamus.