[ANAT] HYPOTHALAMUS

Question 1

site of hypothalamus

Answer 1

beneath thalamus

Question 2

hypothalamus separated from thalamus by

Answer 2

hypothalamic sulcus

Question 3

anterior relation of the hypothalamus

Answer 3

lamina terminalis

Question 4

posterior relation of hypothalamus

Answer 4

vertical plane posterior to mammillary bodies

Question 5

superior relation of hypothalamus

Answer 5

hypothalamic sulcus

Question 6

inferior relation of hypothalamus

Answer 6

floor of interpeduncular fossa

Question 7

parts of hypothalamus

Answer 7

optic chiasma
tuber cinereum
infundibular stalk
mammillary bodies

Question 8

nuclei of hypothalamus (6)

Answer 8

suprachiasmatic
supraoptic
tuberal
infundibular
paraventricular mammillary

Question 9

functions of hypothalamus (8)

Answer 9

regulating/controlling:

autonomic NS
endocrine system
emotions
reproduction
biological clock
body temperature
fluid intake
ingestion

Question 10

connections of hypothalamus going both ways

Answer 10

1-periventricular fibers
2-MFB

Question 11

connection carrying efferents to vital autonomic nuclei of BS & SC

Answer 11

posterior longitudinal fasciculus

Question 12

hypothalamic-hypophyseal tracts

Answer 12

supraoptic-hypophyseal
paraventricular-hypophyseal

Question 13

nucleus responsible for secreting vasopressin

Answer 13

supraoptic nucleus

Question 14

nucleus responsible for secreting oxytocin

Answer 14

paraventricular nucleus

Question 15

hypothalamo-hypophyseal tracts send impulses to

Answer 15

posterior pituitary

Question 16

infundibular arcuate nucleus responsible for

Answer 16

secreting release & release-inhibiting hormones

Question 17

infundibular arcuate nucleus sends impulses to

Answer 17

anterior pituitary

Question 18

site of subthalamus

Answer 18

inferior to thalamus
b/w thalamus & tegmentum of midbrain

Question 19

subthalamus is separated from thalamus by

Answer 19

hypothalamic sulcus

Question 20

subthalamus contains

Answer 20

subthalamic nuclei responsible for muscle activity

Question 21

lesion of subthalamus leads to

Answer 21

hemiballismus

Question 22

epithalamus components

Answer 22

pineal body
habenular nucleus
posterior commissure

Question 23

site of pineal body

Answer 23

inferior to splenium of corpus callosum

Question 24

superior lamina of pineal body contains

Answer 24

habenular commissure

Question 25

inferior lamina of pineal body contains

Answer 25

posterior commissure

Question 26

space b/w superior lamina & inferior lamina of pineal body

Answer 26

pineal recess of 3rd ventricle

Question 27

function of pineal body

Answer 27

inhibit pituitary, pancreas parathyroids etc

secrete melatonin

Question 28

pineal body secretes? by?

Answer 28

melatonin
pinealocytes

Question 29

habenular nuclei site

Answer 29

superior laminae of pineal body

Question 30

right & left habenular nuclei are connected by

Answer 30

habenular commissure

Question 31

habenular nuclei receive? via?

Answer 31

olfactory input
stria medullaris thalami

Question 32

habenular nuclei send output to? via?

Answer 32

nucleus solitarius
nucleus ambiguus
dorsal vagal nucleus

via fasciculus retroflexus

Question 33

function of habenular nuclei

Answer 33

visceral nucleus
mediates salivation, gastric secretions & motility

Question 34

posterior commissure contains

Answer 34

interstitial nucleus of cajal
Darkschwitscz nucleus

Question 35

posterior commissure function

Answer 35

connect__of both sides
1.superior colliculi
2.MLB
3. Pretectal nuclei