TEAS 7 endocrine system

endocrine system

messenger system comprised of feedback loops of hormones released by internal glands and target distant organs

posterior pituitary

oxytocin, antidiuretic hormone(ADH)

antidiuretic hormone(ADH)

conserves blood vessels

controls salt

decrease urine

high blood vL, high blood pressure

anterior pituitary gland

Growth hormone

prolactin(PRL)

thyroid stimulating(TSH)

follicle stimulating(FSH)

luteinizing hormone

ACTH

Prolactin(PRL)

milk prod.

thyroid stimulating(TSH)

metabolism

Follicle stimulating(FSH)

form ova/sperm

luteinizing hormone

controls reproductive function and sex hormones

ACTH

release cortisol

thyroid

T4

T3

calcitonin

T3

control growth, metabolism, HR, Body temp, energy use

t4

controls how body uses energy, nervous system

calcitonin

lowers blood Ca

pineal

melatonin-sleep

gonads

estrogen

progesterone

androgen

pancreas

insulin

glucagon

parathyroid hormone

increase blood Ca

thymosin

T cell mature

adrenal cortex

cortisol

aldosterone

aldosterone

increase BP, increase BV,

increase Na in kidneys

cortisol

stress

adrenal medulla

epinephrine

norepinephrine

epinephrine

adrenaline, heart and airways

norepinephrine

stress, fight or flight, maintain BP

hypothalmus

controls and regulates

GI system

gastrin

secretion

CCK hormone

gastrin

stimulates HCI

secretion and CCK

pancreatic enzyme

bile

heart

atrial natriuretic peptide(ANP)

ANP

increase Na excretion

lower BP, lower BV

endocrine

release hormones into surrounding, no special ducts

exocrine

makes substance and releases through duct or opening in body

hormones

regulatory substances

pos feedback loop

speeds up and amplify change to push a process forward until end

neg feedback loop

slow down or reverse change to keep system stable