Thalamus Flashcards

1
Q

Thalamic Nuclei

Body Sensation

Relay to Somatosensory cortex

A

VPL

Ventroposterior Lateral

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2
Q

Thalamic Nuclei

Face Sensation

Relay to Somatosensory cortex

A

VPM

Ventroposterior Medial

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3
Q

Thalamic Nuclei

Thalamic Relay for:

Limbic System

Papez circuit

A

Anterior group

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4
Q

Thalamic Nuclei

Motor Loops

A
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5
Q

Thalamic Blood Supply

Primary Major Artery?

Distal vessels?

A

PCA:

Thalamic perforators

Thalamogeniculate

post choroidal

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6
Q

Thalamic Nuclei

Relay to Somatosensory cortex

A

VPL

Ventroposterior Lateral

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7
Q

Thalamic Nuclei

Mnemonics for:

VPM

VPL

LGN

MHN

A

1- Ventral Postero-Lateral nuclues (VPL) => Very Painful Leg

This nucleus has input (pain, temperature, pressure, touch, vibration and proprioception) from Spinothalamic and dorsal columns/medial lemniscus ( Lower Limbs and Upper Limbs).

2- Ventral Postero-Medial nucleus (VPM) => Very Painful Mouth

This nucleus has input (face sensastion and taste) from trigeminal and gustatory pathway).

3- Lateral Geniculate Nucleus (LGN) => Looking Good Naked :O

This nucleus has input (part of the visual pathway) from the optic nerve.

4- Medial Geniculate Nucleus (MGN) => Making Good Noise

This nucleus has input (part of the hearing pathway) from superior olive and inferior colliculus of tectum.

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8
Q

Dejerine–Roussy syndrome

A

Thalamic pain syndrome: initial sxs of numbers. Weeks to months later numbness may evolve into pain in the same distribution

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9
Q

BG Blood supply

Caudate

Putamen

GP

Thalamus

A

Caudate: MCA > Lenticulate striate

Putamen: ACA > Perforating br / recurrent aa of Heubner

GP: Anterior choroidal (from ICA near MCA)

Thalamus: PCA

(Thalamoperforators, Thalamogeniculate, post choroidal)

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