Review Flashcards
(64 cards)
What determines what different tissues get different hormones from cholesterol
enzymes
What is the difference between steroid and protein hormone storage
Steroid-not stored
What is tyrosine
Hormone that gives rise to T3/4 and catecholamines and dopamine
Where do steroid receptors function
in the nucleus/in the cell
where are protein hormone receptors
on the surface
2nd messenger system
What does TRH do
increase TSH increase thyroid
what does CRH do
increase ACTH
increase adrenal cortex hormones
What does GnRH do
increase FSH/LH
increase ovary/testies hormones
What does the hypothalamus do
Produce hormones that travel to the pituitary
What are the two hormones released from neurohypophisis
ADH and oxytocin
what makes ADH and oxytocin unique
made in one place, secreted in another
conserved among species
What does prolactin do
drive milk production from alveolar cells
what does oxytocin do
milk let down
What are glycoprotein hormones
FSH, LH, TSH
What’s the difference between the a and b subunit in glycoproteins
A is common
B is specific
What happens when there is deficiency in GH
pituitary dwarfism
Is GH deficiency/excess different depending on when the deficiency/excess occurs
yes
What is IGF-1
mediator for effects of growth hormone
What are the two major organs responsible for handling stress
Adrenal medulla/cortex
Why is epinephrine the major catecholamine
there is more of it than norepinephrine
how is thyroid hormone secretion regulated
Negative feedback between T3/4 from the thyroid on TRH from hypothalamus and TSH from anterior pituitary
What are major effects of thyroid hormone
increase major overall metabolic rate
Growth in young animals
Development and maturation of the CNS
Primary hypothyroidism
Thyroid produces less T4
95% fo cases in dogs
Secondary Hypothyroidism
abnormality at pituitary level
