Thalamus Stuff... Word Scramble
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Question | Answer |
Anterior Nucleus functions & destination | Limbic Pathways Cingulate Gyrus |
Mediodorsal Nucleus functions & destination | Limbic pathways, major relay to frontal cortex Frontal Cortex |
Centromedian Nucleus (Intralaminar group) functions & destination | Motor relay for BG Stratum, cerebral cortex |
Lateral Dorsal nucleus functions & destination | Functions with anterior nuclei |
Lateral Posterior Nucleus functions & destination | Functions with pulvinar (vision) |
Ventral anterior nucleus functions & destination | Relays BG & cblr inputs to cortex Widespread to frontal lobe, including pre-frontal, pre-motor, motor & supplementary motor cortex |
Ventral Lateral nucleus functions and destination | Relays BG & cblr inputs to cortex Motor cortex |
Ventral Posterior Lateral Nucleus (VPL) functions & destination | Relays somatosensory spinal input to cortex Sensory cortex |
Ventral Posterior Medial Nucleus (VPM) functions & destination | Relays somatosensory CN inputs & taste to cortex Somatosensory & taste cortex |
Reticular Nucleus | Relays info that may regulate thalamic activity; connected to RF & cortex |
Blood Supply of the Thalamus | Basilar root of PCA; PCA; Post. Communicating a.; Internal carotid a. |
Internal Capsule Blood supply | Posterior Limb & Genu- Lateral Striate (branch of MCA) Anterior Limb- Medial Striate (branch of ACA) |
Posterolateral Territory (Caudal Part of Lateral Group) | Branches of PCA Primary sensory nuclei: VPL, VPM, Pulvinar/Centromedian Nuclei |
Lesion to Posterolateral Territory causes what s/sx? | Pansensory loss; Paresthesia; Contralateral thalamic pn All s/sx contralateral! |
Anterolateral Territory (Rostral Part of Lateral Group) | Posterior communicating aa. VA, VL, Dorsomedial, & Anterior nuclei |
Lesion to Anterolateral Territory causes what s/sx? | Neuropsychological- abulia, L side- speech, R side- visuospatial problems, contralateral hemiparesis, visual field cuts |
Medial Thalamic Territory | PCA Basilar Root |
Lesion to Medial Thalamic territory causes what s/sx? | Drowsiness, usually a bilateral lesion This territory deals with more abstract things |
Lateral Thalamic Territory | Internal Carotid Post. Limb of IC, LGN, VPL, Pulvinar, Reticular thalamic nuclei |
Lesion to Lateral Thalamic Territory causes what s/sx? | Contralateral hemiparesis, dysarthria, +/- visual field cuts |
Posterior Thalamic Territory | LGN, Pulvinar, Dorsolateral nuclei |
Lesion to Posterior Thalamic territory causes what s/sx? | Contralateral homonymous quadrantopsia, hemihypesthesia, neuro defects (memory deficits), visual field cuts |
Lesion of Sub-Thalamus | Largely connected to GP; Sudden, forceful involuntary mvmts in contralateral extremity Jerky mvmts- choreiform; Violent mvmts- ballistic; Hemiballism |
Pineal Tumors | Depress gonadal fxn, delay puberty, also interfere with vertical gaze (b/c directly above midbrain) |
Pineal Lesion | Early onset of puberty |
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