Hyppthalamic Hormones

Question 1

Paraventriculer nucleus site
Within th BBb or outside

Answer 1

Adjacent of the 3rd ventricle
Within the BbB

Question 2

Paraventriculer nucleus have to types of neurons

Answer 2

Magnocelluler ADH and oxytocin
Parvocelluler ADH TRH CRh

Question 3

Paraventriculer nucleus hormones

Answer 3

CRH
TRH

Question 4

Arcuate nucleus

Answer 4

Dopamine and GHRH

Question 5

Preoptic nucleus

Answer 5

GRH

Question 6

Periventrinculer nucleus

Answer 6

Somatostatins

Question 7

Supraoptic and Paraventriculer

Answer 7

ADh and oxytocin ‘
ADh supraoptic parvo and mango
Oxytocin Paraventriculer parvocelluer ,

Question 8

Define dopamine

Answer 8

Prolactin inhibiting hormone

Question 9

How many receptors does dopamine have

Answer 9

5 receptors

Question 10

Dopamine is produced in 3 sites

Answer 10

Substantia nigra
Arcuate nucleus
Medulla of the adrenal glands

Question 11

Mention 5 functions for dopamine

Answer 11

1 ) have a role in behavior , cognition , voluntary movements
2) inhibits prolactin
3 inotropic
4 chronotropic ‘5bstimulate comiiting via chemoreceptors trigger zone

Question 12

What’s metoclopromide

Answer 12

Is dopaminergic receptor antagonist

Question 13

Can dopamine cross the BBB

Answer 13

It’s can’t cross the BBB .

Question 14

Dopamine is metablized by

Answer 14

COMT
mAo

Question 15

GNrH is secreted by which nucleus

Answer 15

Preoptic nucleus

Question 16

GNrH secretion pattern

Answer 16

Pulsation manner

Question 17

When is GNrH secretion pattern is pulstile frequency high and when is low

Answer 17

High in the follicular phase
Low in the late luteal phase

Question 18

Half life of GNrH

Answer 18

2-4 mins

Question 19

GNrH gene present on which chromosome

Answer 19

On chromosome 8

Question 20

Relation between GNrH , insulin and prolactin

Answer 20

Insulin increases GNrH activity
Prolactin decreases GNrH activity .

Question 21

Activity of the GNrH in th childhood

Answer 21

Is low

Question 22

Describe somatostatin اكتر اشي بميزه

Answer 22

Somatostatin is GHRH inhibitor
And inhibit TSH as well .

Question 23

Somatostain is secreted by

Answer 23

Intestine
Stomach
Pancreatic cells D cells
Thyroid cell parafolliculer cell s
Periventriculer cells

Question 24

What does somatostatin inhibits

Answer 24

1 GH
2 tsh
3 gastric emptying intestinal motility
Suppresses release of pancreatic hormone
Inhibits
Gastrin
Cck
Motility
Secretin
Insulin
Glucagon
VIP vasoactive intestinal peptide .

Question 25

TRH released from
And stimulate release of

Answer 25

From the Paraventriculer nucleus
Secret the release of TSH , prolactin

Question 26

Melatonin is derived from

Answer 26

Serotonin

Question 27

Describe the activity of melatonin

Answer 27

Bio rhythmic and diurnal

Question 28

What increase release of the melatonin

Answer 28

Darkness
Hypoglycemia

Question 29

Sites of melatonin production

Answer 29

👁️ retina , lens of the eye 👁️ , GIT , pineal gland , suprachiasmatic nucleus .

Question 30

Gonadotrophins and melatonin relation

Answer 30

Melatonin inhibits gonadotrophins .