Hormones of the Endocrine System

Gland or Tissue	Hormone	Chemical Nature
{testes} Testis	testosterone	steroid
{ovaries} Ovary	estrogens (estradiol, estrone, estriol) steroids inhibin (folliculostin) progesterone relaxin	polypeptide? steroid polypeptide
{thyroid} Thyroid gland	thyroxine triiodothyronine	amino acid amino acid
Adrenal gland Medulla	epinephrine norepinephrine dopamine	amine amine steroid
Adrenal gland Cortex	cortisol corticosterone aldosterone androgens estrogens	steroid steroid steroid steroid steroid
{pituitary_organ_anterior} Pituitary gland Anterior lobe	corticotropin (adrenocortico- tropin, ACTH) growth hormone (GH or somatotropin) thyrotropin (thyroid- stimulating hormone, TSH) follicle-stimulating hormone (FSH) uteinizing hormone (LH, interstitial cell stimulating hormone, ICSH) prolactin (PRL, luteotropic hormone, LTH, lactogenic hormone, mammotropin)	polypeptide protein glycoprotein glycoprotein glycoprotein protein
{pituitary_organ_posterior} Pituitary gland Posterior lobe	oxytocin vasopressin (antidiuretic hormone, ADH)	polypeptide polypeptide
Intermediate lobe tissue	alpha-melanocyte-stimulating* hormone (alpha-MSH) beta-melanocyte-stimulating* hormone (beta-MSH)	polypeptide polypeptide
{hypothalamus} Hypothalamus	corticotropin-releasing hormone (CRH) growth hormone-releasing hormone (GHRH) thyrotropin-releasing hormone (TRH) follicle-stimulating hormone (FSH) gonadotropin-releasing hormone (GnRH) prolactin-inhibiting factor (PIF) somatostatin gastrointestinal neuropeptide	polypeptide? polypeptide? polypeptide polypeptide? polypeptide polypeptide? polypeptide polypeptide
{pancreas} Pancreatic islets	glucagon insulin somatostatin pancreatic polypeptide	polypeptide polypeptide polypeptide polypeptide
{parathyroids} Parathyroid gland	parathyroid hormone (parathormone) calcitonin	polypeptide polypeptide
{skin} Skin, {liver} liver, {kidneys} kidney	calciferols	steroids
{stomach} Gastrointestinal mucosa Stomach Duodenum	gastrin cholecystokinin (CCK) secretin gastric-inhibitory polypeptide (GIP) vasoactive intestinal peptide (VIP) villikinin enterocrinin	polypeptide polypeptide polypeptide polypeptide polypeptide -- --
{thymus} Thymus	thymosin	polypeptide
{pineal_gland} Pineal	melatonin	amine (not secreted?)
{kidneys} Kidneys	renin erythropoietin	protein protein?
Placenta	human chorionic gonadotropin (HCG) human chorionic somatomammo- tropin (HCS) renin estrogens androgens progesterone	glycoprotein protein protein steroids steroids steroid
Multiple tissues	somatomedins (insulin-like growth factors) prostaglandins	polypeptides steroids