Thalamic nuclei Flashcards

1
Q

Ant nucleus- Input, Output, function

A

Input- neurons from mammilary bodies of hypothalamus

Out- signals to cingulum

Function- part of limbic system

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2
Q

ventral lat ant nucleus- input, output, function

A

input- neurons from the palladium

out- signals sent to pre motor cortex

Function- Planning of motor commands

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3
Q

Ventral lat nucleus- input, output, function

A

input- neurons from CL cerebellum

Out- primary somatomotor cortex

Function- cerebellar modulation of motor commands

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4
Q

Ventral post lat nucleus- input, output, function

A

in- medial + spinal lemnicuso

out- Primary somatosensory cortex

Function- skin sensation from CL head

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5
Q

Ventral posteromedial nucleus- input, out, function

A

In- trigeminal lemniscus

Out- primary somatosensory cortex

Function- Skin sensation of CL head

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6
Q

Lat geniculate body- in, out, function

A

In- from optic tract

Out-Occipital lobe, IL sup colliculus

Function- relay of visual path and automatic reactions based in visual stims

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7
Q

med geniculate body- in, out, function

A

In- lateral lemniscus (/inf colliculus)

out- primary auditory cortex

Function- auto motor rxns based on auditory stim

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8
Q

Mamilary body function

A

integrates olfactory still

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9
Q

lat nucleus of hypothalamus function

A

hunger center, regulates food intake

destruction leads to anorexia

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10
Q

Venteromedial nucleus of hypothalamus function

A

Saiety center

destruction leads to eating too much

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11
Q

ant/Post hypothalamic nucleus function

A

Regulates body temp

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12
Q

Suprachiasmatic nucleus of hypothalamus function

A

regulates sleep/wake cycle

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13
Q

preoptic nucleus of hypothalamus function

A

Regulates BP, HR etc

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14
Q

posterolat+ dorsomedial nut of hypothalamus function

A

sympathetic + parasympathetic system

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15
Q

what does the post lobe of the pituitary gland release and what stims it

A

timed by paraventricular + supra optic nucleus

Releases ADH and oxcetocin

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16
Q

What is released from arcuate nucleus and where does it go

A

releasing hormones that go thru hypophyseal portal venous system to ant lobe of pituitary

17
Q

What is released from ant lobe of pituitary

A

somatotrops (GH)
lactrotrops
corticotrobs
gonadotrops (FSH, leuttnizjng)

18
Q

What is thalamic syndrome

A

Rare stroke that affects all general sensations on CL body

19
Q

What happens in encephalitis lethargic (H1N1)

A

excessive sleepyness

due to suprachsmatic nucleus being affected (deals w sleep/wake cycle)