-various chemicals can function as hormones . -types of sercerttion ( amino acid, steroids, is deriviative of cholestrole they are all lipids, peptides proteins are descrbing a small protein or a strain of few amino acids, eicosanoids 5 carbon ring structure derived from fatty acids ) those stuff are releaser by the endocrine gland relearse into the blood stream. Endocrine gland tend to be highly vestorizlied . -immune system antibody has to fit with the pathogen like an lock and key , confrimational change. -one hormone can have a target tissues tha cause another hormones to be made. They all mediated by the production of the protein. Essentially you are going to change the amount of the protein that is being made or the activity that under go or the type of the proteins. -three major ways that endocrine gland is to stimuli to produce their homones ( composition of the internal enviorment( humeral) insulin is the example of that. Hormonoal hormones are release by hypothalamus . neural stimuli endocrine gland that are directly connected ( adrenal gland secrets epineiforns) -hypothalamus control the other endorcrine gland by contorling the pituitary gland. The hypothalamus acts pituitary glands -hypothalamaus has the direct neural control ( sympathaic(panic) of the adrenal gland)-endocrine the hypothalamus makes and relaears oxitosin and ADH secrets them thorugh the pituitary gland both of the molecules are release by posterior neural hyposis. Oxitosin and ADH are pitutiatry hormones mehcanisms of hypothamolic control-direct neural control of other endocrine glands: ex adrenal gland – epinephrines or norepinephorine - endocrine production and rleaesr of hormones : ex oxytocin and ADH -indrection endocrine control of other gland by contole of anterior pititurary gland , release & inhibition hormones . -sympathetic is connected to the adrenal gland -posterior pitutuary is the neural . oxytosin the prostate gland and the muscle of the vast different is all the oxytosins . -ADH ( vesopresient) it has action on kidney it cause the kidney to hold water -the neural hypothesis does not produce any hormones . it only holds it and rlease it -antierior pitutaurly ( adno ) they are making the hormones they are making piptide hormones they are 7 of them. - anterior pitituary gladn ( prl ( prolactin) , tsh ( thyroid stimulating hormones), gh( growth hormones), acth( adrenocorticotropic), lh (luteninzing hormone) peaks at ovulations , fsh( follicle stimulating hormones)develop follicles in the ovaries as well as in the testes spermatagensis, msh ( melanocytes stimulating hormones) fetal development active in babies and production of melanocytes { growth hormone releaseing hormone is regulate by the hypothalamus -posterior pitituary hormones ( adh( antidiuretic hormones) , oxytocing -thyroid the level of the lyranx relearse thyroxin t3& t4 the difference between t3&t4 is the idoeine tahts in it . thermal regulation it increase oxygen comsumption cause increase in atp production t3 has the opposite effect of t4 . almost all cell in

the body will repsonde to the thyroxing . its almost all t4. Throyxin is store in the colloid . -thyroid c cells also called parafolicular cells( production calcitonin, controls blood levels , inhibits osteoclasts which red uces loss from bone , it stimulates osteoblast which increase deposite calcium in bones. -goiter its from lack of iodein the thyroxin cannot be rlearse until the iodenine attaches to it. -thymus gland is very large in infant all the tlyphacsistes occure here and there is hormones called thymacine that are also produced here the target cell is the lypocistes . t cells are types of white blood cells - the pancrease inferior and posterior to the stomach , it’s a exocrine(digestive enzymines and endocrine. Cells that secrets glcogone and somatostaten . the islet of the longerhand contains the different cell that do the endocrines alpha cell that secrets glucocong . beta cell that secrets insulin particular the liver and the muscles and delta cells are the ones tha makes somaticstaten. All the other parts of the acenar cells and those are the exocrine cells that are doing the digestive enzyme -pineal gland secrets melantoine which Is devrive from serratone which is nerve transmitter which is derve from tropiotafan ( amino acid) its involved in sleep way cycles . it also inhibits follicles stimulating hormones inhibits sperm and egg production . -adrenal glands are the superior aspect of the kidney has adrenal cortex and medulla . also has the outer capsule adrenal hormones

- cortex – aldosterol( has an impact on salivary gland sweating minearlcoloids they glymeriosa , cortisol, androgens,

- medulla – adrenaline, epinephrinethe middle layer secrets glycocoloids . third layer makes bunch of androgens pubic hair developments other organs that secrets hormones

- heart muscles cells secrets atrial natriuretic ,( anp-bnp), brain natriuretic peptide they function to decrease blood pressure in repsondse to the stretching of the heart muscles

-kidneys release renin whichi increase the aldosterone which inscearse in whatever in the blood . erythroproietin increase in red cell production