thalamic and hypothalamic nuclei Flashcards
lateral area of the hypothalamus is in charge of?
hunger
if you lesion your lateral hypothalamus you…
lose weight laterally (bc lateral hypothal = hunger —-> now you have anorexia)
the ventromedial area of the hypothal. is in charge of?
satiety
if you lesion the ventromedial hypothal you…
grow in the ventral and medial areas, bc the ventrolat. region = satiety, so if you lesion it you get hyperphagia
- the anterior hypothalamus is in charge of…
2. it is under what type of innervation?
- cooling 2. Parasympathetic
- The posterior hypothalamus is in charge of…
2. it is under what type of innervation?
- heating
2. sympathetic
the suprachiasmatic nucleus of the hypothalamus is in charge of…
circadian rhythms… SLEEP!!! (to be “charismatic” you need sleep)
the posterior pituitary is also called what?
the neurohypophesis
the posterior pituitary receives what hypothalamic projections/peptides for storage?
- from the supraoptic nuclei (ADH)
2. from the paraventricular nuclei (oxytocin)
the anterior pituitary is also called…
the adenohypophesis
The 7 function of the hypothalamus
TAN HATS
- Thirst/H20 reg.
- Adenohypophesis control (ant pit)
- Neurohypophesis releases hormones produced in the hypothalamus (oxytocin and ADH)
- Hunger
- Autonomic regulation
- Temperature regulation
- Sexual urges
2 input regions to the hypothalamus?
- OVLT (senses change in osmolarity —> ADH)
2. area postrema (responds to emetics)
What is the input into the VPL of the thalamus?
spinothalamic and dorsal columns/medial lemniscus
what information comes into the VPL of the thalamus?
pain, temp, pressure, touch, vibration and proprioception
the information from the VPL of the thalamus is headed where?
primary sematosensory cortex (pain, temp, pressure, touch, vibration and proprioception)
the VPM of the thalamus gets inputs from which tracts?
trigeminal and gustatory pathway
what infortmation is carried to the VPM of the thalamus?
face sensation (trigeminal) and taste (facial nerve, IV and X) (“vpM = Makeup goes to the face”)
Information that goes into the thalamic VPM is headed where?
primary somatosensory cortex (face sensation (trigeminal) and taste (facial nerve, IV and X))
What input goes to the LGN of the thalamus?
CNII (vpLateral = light)
What information is carried into the LGN of the thalamus?
vision (CNII) (vpLateral = light)
what is the destination of the info that comes into the thalamus via the LGN?
the calcarine sulcus (CN II)
what is the input into the VL thalamus?
the basal ganglia
what information is carried into the VL thalamus?
motor
where is the information coming out of the VL thalamus headed?
motor cortex
What information is carried to the MGN of the thalamus?
hearing (Mgn = music!)
what input goes into the MGN of the thalamus?
superior olive and inferior colliculus of tectum (midbrain with hearing info)
what is the destination of the information coming from the MGN?
auditory cortex of the temporal lobe (Mgn = Music (hearing!))
5 structures of the limbic system?
- hippocampus
- fornix
- mammalary bodies
- amygdala
- cingulate gyrus
5 F’s of the limbic sys
- Feeding
- Fleeing
- Fighting
- Feeling
- Sex
