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CNS > Thalamic Nuclei > Flashcards

Thalamic Nuclei Flashcards

1
Q

Anterior part contains

A

ANTERIOR THALAMIC NUCLEI

part of Papez circuit

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2
Q

Anterior thalamic nuclei

Afferent

Efferent

A

Afferent: MAMILLOTHALAMIC TRACT involved in limbic system ie emotion and memory

Efferent: to CINGULATE GYRUS (limbic system)

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3
Q

Medial Part cobtains

A

Dorsomedial nucleus

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4
Q

Dorsomedial nucleus

A
E

A

Afferent from amygdala

Efferent to PREFRONTAL CORTEX

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5
Q

Dorsomedial nucleus function

A

Relates emotions to somatic, visceral and olfactory sensation

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6
Q

Lateral part categories

A

Dorsal tier (limbic system)

Ventral tier

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7
Q

Lateral posterior of dorsal tier

A
E

A

Receives fibers from the SC

Efferent fibers to parietal lobe

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8
Q

Lateral dorsal of dorsal tier

A

Efferent fibers to cingulate gyrus there4 a part of limbic system

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9
Q

Pulvinar of dorsal tier

Afferent

Function

A

Receives information from area 18,19

Functions to integrate vision

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10
Q

Parts of dorsal tier

A

Lateral posterior

Lateral dorsal

Pulvinar

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11
Q

Parts of ventral tier

A
  1. Ventral anterior
  2. Ventral lateral
  3. Ventral intermediate
  4. Ventral posterior
    i. Posteromedial
    ii. Posterolateral
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12
Q

Ventral anterior

A
E
F(x)

A

Afferent from GP and substansia nigra

Efferent to area 4 and 6

F(x) to influence motor cortex activity

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13
Q

Ventral lateral
A
E
F(x)

A

Receives afferent from:

  1. Cerebellum (contralateral)
  2. Gp
  3. Substansia nigra

Efferent: to area 4, 6

F(x) influences motor activity thru the cerebeullum

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14
Q

Ventral lateral nucleus role in treating parkinsosn

A

EXCISED

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15
Q

Function of ventral posterior

A

Sensory

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16
Q

Ventral posteromedial

Afferent

Efferent

A

Receives afferent from trigeminal lemmiscus (solitariothalamic tract for taste)

Efferent to area 3, 1, 2

17
Q

Ventral posterolateral

A
E

A

Afferent from the medial and spinal lemniscus

Efferent to primary sensory

18
Q

Intralaminar nuclei transmits what?

A

Pain, consciousness, alertness ro cerebral cortex

SPINORERICULAR TRACT ENDS IN RET. FORMATION AND INTRALAMINAR NUCLEI

19
Q

Midline nuclei is important to

A

Limbic system

20
Q

Reticular nucleus location

A

Lateral to thalamus between the external medullary lamina and internal capsule

21
Q

Thalamic afferents

A

Spinal lemniscus

Medial lemniscus

Trigeminal lemniscus

Fibers from caudate, lentiform (gpi)—>GABA

Corticothalamic

Spinothalamic

22
Q

Efferent from thalamus

A

Thalamocortica

23
Q

Dejereine roussy syndrome

Caused by

Effects

A

Lesion to branches of PCA

Effects Ventral part of Posterior thalamus including internal capsule

Paralysis on opposite side if too much—> exaggerated and spontaneous

CNS (28 decks)

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