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Diencephalon

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imissyou419's version from 2016-10-17 22:03

Section 1

Question Answer
Modality specificMedial geniculate body, lateral geniculate body, VPL, VPM
Motor relay nucleiVA, VL
Association anterior, MD, pulvinar
non-specificreticular, intralaminar
Visceral infoterminates at insular cortex (involved in emotional responses - fight or flight)
Medial geniculate bodysensory info from ears synapse onto this
Lateral geniculate bodysensory info from eyes synaspe onto this
VPLsensory info from body
VPMsensory info from head
VAglobus pallidus input
VLcerebellar input
MDamygdala input, connected to precentral cortex for limbic control
Pulvinarcarries nonspecific info to integrate at PMAA
Anteriorlimbic inputs to cingulate gyrus
reticular sends input to other thalamic nuclei for arousal
intralaminar nucleisends input to cerebral cortex for arousal
memorize

Section 2

Question Answer
Fornixfiber tract that connects part of tempora lobe (hippocampus) with hypothalamus, involved in limbic system (directly inferior to corpus callosum)
interthalamic adhsionconnects 2 sides of thalamus at midline
location of thalamusmedial to internal capsule, on either side of 3rd ventricle, ventral to fornix, medial, posterior to basal ganglia
what is the exception for sensory and motor information having to relay at thalamus before going to cerebral cortex?smell - goes directly to uncus through olfactory tract
optic chiasmwhere optic nerves cross to form optic tract going to the brain
olfactory tractbrings smell into uncus (olfactory cortex) in temporal lobe
hypothalamus functiongets information about internal environment and regulate homeostasis, endocrine system, autonomic control (ouptut through nuclei in medulla), connection to insular cortex and limbic system
epithalamus (pineal) functionlight input from suprachiasmic nuclei (relay); secretes melatonin based on light intensity; control of ciradian cycles, sleep
memorize

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