DSA hypothalamic, thalamus, and limbic system Flashcards
hypothalamus role
homeostasis
preoptic area of hypothalamus
medial and lateral preoptic nuclei
medial preoptic nucleus
GnRH
periventricular zone
releasing hormones
-hypophyseal portal to a pit
medial zone
- supraoptic region
- tuberal region
- mammillary region
lateral zone
-medial forebrain bundle
lateral hypothalamic nucleus
feeding center
tuberal nuclei
form tuberoinfundibular tract
- ventromedial
- dorsomedial
- arcuate
supraoptic/paraventricular nucleus
oxytocin and ADH to PP
suprachiasmatic nucleus
input from retina; circadian rhythm
anterior nucleus
visceral/somatic functions and temp regulation
ventromedial nucleus
“satiety center”
dorsomedial nucleus
emotional behavior
arcuate nucleus
releasing hormones
mammillary region
medial mammillary nucleus
intermediate and lateral mammillary nucleus
medial mammillary nucleus
termination of postcommissural fornix
intermediate and lateral mammillary nuclei
reticular formation via mammillary peduncle
posterior hypothalamic nucleus
merges w/ PAG and associated with emotional, cardiovascular and analgesic functions
blood supply of hypothalamus
A1, anterior communicating, posterior communicating and P1
largest input to hypothalamus
fornix
hypothalamic afferents
fornix medial forebrain bundle amygdalohypothalamic fibers -stria terminalis -ventral amygdalofugal pathway
ascending hypothalamic pathways
- mammillary fasciculus
- hypothalamothalamic fibers
direct links of hypothalamus and ANS
-hypothalamospinal and hypothalamomedullary fiber
indirect links of hypothalamus and ANS
- posterior longitudinal fasciculus
- mammilotegmental tract
- PAG neurons
