Exam 1: endocrine Flashcards
Difference between endocrine and exocrine
exocrine secrete on surface
endocrine secrete to blood stream
difference between autocrines and paracrines
autocrine: cell secretes hormone that binds to SAME CELL
paracrine: cell signaling where target cell is close to signal cell
how can hormones stimulate responses
biding to receptors on target cells
what affects the size of a responce to a hormone
number of receptors
3 types of endocrine stimulus
humoral hormonal and nueral stimuli
what lobes are in pituitary gland
anterior and posterior
how are hormones made and stored in the thyroid?
through follicular cells
explain thyroid hormone
follicular cells (hormone)
metabolism tissue growth
maintains blood pressure
what causes a goiter?
enlarged thyroid
where are the parathyroid glands located and how many?
posterior of thyroid
4
what do parathyroid hormones do?
increase blood calcium
difference between adrenal medulla and adrenal cortex
medulla: epi and norepinephrine
cortex: glucocorticoids
roles of cortisol
Increase blood sugar levels
how does adrenal medulla deal with stress
releases catecholamines (fight or flight)
epinephrine or norepinephrine
where is the pineal gland located
base of brain (secrete melatonin)
