2 - Hypothalamus and pituitary gland

Question 1

whihc is most superior hypothalmus or pituatoyr

Answer 1

hypothalamus

Question 2

what is the hypothalmus made out of

Answer 2

neural brain tissue

Question 3

how is the pituatary attached

Answer 3

infundibulum

Question 4

what is the connection of the hypothalmus and the posterior pituatory

Answer 4

neuronal

Question 5

what is the connnectiono between hypothalmus and antiero pituatly

Answer 5

capillaries

Question 6

how large is the pitualry

Answer 6

bean sized about 14 mm

Question 7

whihch bone is the pituatory gland in

Answer 7

sphenoid

Question 8

which is true endocrine, postieor or antieroe pituaayr

Answer 8

anterior

Question 9

how much of the pitatory is anterior and posteoro

Answer 9

2/3 anterior
1/3 posterior

Question 10

role of posteriror

Answer 10

secreting neuraol of nerual hormones

Question 11

what is the middle part of oitaary called

Answer 11

par intermdia

Question 12

what does pars intermedia secrete

Answer 12

msh - melocyte secreting hormone

Question 13

factors that effect the hypothalm

Answer 13

cold, stress, metabolic demand, exercise, day/ lihgt, mental cycle, sleep, breast feeding, pregnancy, puberty

Question 14

what does the pituatry gland control

Answer 14

trhyoid
adreanl
lactioaiton
gonda fuciton
growth
water balance
metabolisms

Question 15

what type of horomes are relaed by pituarayy and ghpothalms

Answer 15

trophic and non trophic hormones

Question 16

what type of hormes are relased by posterior pituary and hypothalmus

Answer 16

neurohormone

Question 17

what are torpic hoomres

Answer 17

give rise to another hormone

Question 18

example of non trophic

Answer 18

nerual hormes produe ni hypothalus travel to te to posterio pituatry though axons to release a chemical into blodd

Question 19

examples o ftropic hormoens

Answer 19

nueroal hormes secrete into capillarei travell to antiero pituary

Question 20

type of neruon in posterior pituatry

Answer 20

magnocelluar neurons

Question 21

role of magnocelluar hromes

Answer 21

release Peptie neuro hormones - vasopressing - anti diurectic hrome adh
oxytocin - stimalres uterine corntioact (during labour) and adis in exression of milk in locating brest

Question 22

role of oxytoicn and vasopressin in postieor prituatry

Answer 22

act like peptide hormes to pacakage and store the visible allowing its release

Question 23

how are postioer pituar hroemes transprt from hypotha

Answer 23

as veiscels so the poster ptiaury can erasle them into the blood after being stored

Question 24

what are the main 5 hypothalmic relases hormones

Answer 24

trh
crh - corticotropin releaseing hormone
ghrh
gnrh - gonadotropin relaasing hromone
prolactin releasing horomone

Question 25

what are the hypothalic inhibiting hormone

Answer 25

growth hormone inhibing horome dopamine / prolactin inhibing hormone

Question 26

what are the type of horme are they

Answer 26

pepties , ext dopamine whihc is catecholamines

Question 27

what can thryoid regulaing hormoen stimular

Answer 27

tsh and prolacing

Question 28

what does ghih stop

Answer 28

g rotwh hrome reles

Question 29

what does dopamine stop

Answer 29

porlactain

Question 30

what is teh hypothalmo hypophyseal portal system

Answer 30

system of tiny vessels whihc tranfer tropic hormones from hypothalamus to antiero pituatary

Question 31

what are the anteior pituatary hormones

Answer 31

tsh acth fsh - follicle stimulating hormone lh - luteising hormone gh prolactin

Question 32

what type of action is prolactin

Answer 32

it is direct acting thus not trophic

Question 33

what is long loop vs short loop feed back

Answer 33

long loop fromt eh endocrine target short loop from anttieor pituaty hypothalamus

Question 34

primary disoerds

Answer 34

from cell that secrete hormone

Question 35

secondar disorder

Answer 35

where there is too little or too much tropic hormone from pituatry

Question 36

3rd order

Answer 36

due to hypothalmic defects

Question 37

hyperresponsiveness cause

Answer 37

alternation in recptoer for hormone, disorderd post recpeotr failure, failure of metaboi activation of hormone

Question 38

hyperresponsivness

Answer 38

thyrodi hormone adrenaline mediated liposisly

Question 39

what happens after prologed exposure to low hormone levels

Answer 39

up regulation of receptor number

Question 40

what happens with prolonged high exposrue to hormone

Answer 40

down regulatio f receuprot number due to decreasecd senstity of tissue to hormone

Question 41

what is permissive effect of hormoens

Answer 41

when one hormone enhances the effect of another hormone when used in combination , ie when epineer only cause slight lipois but when used wit thryoid hores it is much greater

Question 42

why does th cause increaed lymp;o for epinerh

Answer 42

due to it being periem to it th does not cause fatty acid release

Question 43

antagonsit effect

Answer 43

where one drug stops another drug from working as well