| HORMONE | GLAND ORIGIN | TARGET TISSUE | FUNCTION |
| Adrenocorticotropic | Pituitary gland (anterior) | Adrenal cortex | Triggers secretion of hydrocortisone from the adrenal gland |
| Growth hormone | Pituitary gland (anterior) | Throughout body | Stimulates growth and development |
| Follicle-stimulating hormone | Pituitary gland (anterior) | Sex glands | Stimulates female egg maturation and male sperm production |
| Luteinizing hormone | Pituitary gland (anterior) | Sex glands | Stimulates female ovulation and male secretion of testosterone |
| Prolactin | Pituitary gland (anterior) | Mammary glands | Stimulates milk production in the breasts after childbirth |
| Thyroid-stimulating hormone | Pituitary gland (anterior) | Thyroid gland | Triggers secretion of thyroid hormones |
| Melanocyte-stimulating hormone | Pituitary gland (anterior) | Melanin-producing cells | Controls skin pigmentation |
| Antidiuretic hormone | Pituitary gland (posterior) | Kidneys | Regulates water retention and blood pressure |
| Oxytocin | Pituitary gland (posterior) | Uterus Mammary glands | Triggers contraction of the uterus during labor Stimulates milk letdown for breast-feeding after childbirth |
| Melatonin | Pineal gland | Unclear, although possible target sites are pigment cells and sex organs | May affect skin pigmentation; may regulate biorhythms (awake/sleep patterns) and prevent jet lag |
| Calcitonin | Thyroid gland | Bones | Controls the level of calcium in the blood by depositing it in the bones |
| Thyroid hormone | Thyroid gland | Throughout body | Increases the body's metabolic rate; promotes normal growth and development |
| Parathyroid hormone | Parathyroid glands | Bones, intestines, and kidneys | Regulates calcium level in blood |
| Thymosin | Thymus | White blood cells | Promotes the growth and development of white blood cells, helping the body fight infection |
| Aldosterone | Adrenal gland | Kidneys | Regulates sodium and potassium levels in the blood to control blood pressure |
| Hydrocortisone | Adrenal gland | Throughout body | Plays key role in stress response; increases blood glucose levels and mobilizes fat stores; reduces inflammatation |
| Epinephrine | Adrenal gland | Muscles and blood vessels | Increases blood pressure, heart and metabolic rate, and blood sugar levels; dilates blood vessels. Also released during exercise |
| Norepinephrine | Adrenal gland | Muscles and blood vessels | Increases blood pressure and heart rate; constricts blood vessels |
| Glucagon | Pancreas | Liver | Stimulates the breakdown of glycogen (stored carbohydrate) into glucose (blood sugar); regulates glucose blood level |
| Insulin | Pancreas | Throughout body | Regulates blood glucose levels; increases storage of glycogen; facilitates glucose intake by body cells |
| Estrogen | Ovaries | Female reproductive system | Causes sexual development and growth; maintains proper functioning of female reproductive system |
| Progesterone | Ovaries | Mammary glands Uterus | Prepares uterus for pregnancy |
| Testosterone | Testes | Throughout body | Causes sexual development and growth spurt; maintains proper functioning of male reproductive system |
| Erythropoietin | Kidney | Bone Marrow | Produces red blood cells |
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