Table 1 - The Human Endocrine System

 

Gland or Tissue Hormone Chemical Nature
Testis testosterone steroid
Ovary estrogens (estradiol, estrone, estriol)
  steroids
 inhibin (folliculostin)
progesterone
 relaxin
polypeptide?

 steroid

polypeptide
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 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 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 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
Pancreatic islets glucagon
insulin
somatostatin
pancreatic polypeptide
polypeptide
polypeptide
polypeptide
polypeptide
Parathyroid gland parathyroid hormone (parathormone)
calcitonin
polypeptide
polypeptide
Skin, liver, kidney calciferols steroids
Gastrointestinal
mucosa
Stomach
Duodenum
 


gastrin
cholecystokinin (CCK)
secretin
gastric-inhibitory polypeptide (GIP)
vasoactive intestinal peptide (VIP)
villikinin
enterocrinin


polypeptide
polypeptide
polypeptide
polypeptide
polypeptide
--
--
Thymus thymosin polypeptide
Pineal melatonin amine
(not secreted?)
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