| Term | Definition |
| Growth hormone | anterior pituitary; regulates development of muscles and bones |
| Follicle-stimulating hormone | anterior pituitary; growth of ovarian follicles and estrogen in female, sperm production in male |
| Luteinizing hormone | anterior pituitary; stimulates ovulation and progesterone in females and testosterone in males |
| Prolactin | anterior pituitary; stimulates secretion of milk from mammary glands |
| Adrenocorticotropic | anterior pituitary; stimulates secretion of cortisol and aldosterone from adrenal cortex |
| Thyroid-stimulation hormone | anterior pituitary; regulates secretion of thyroid hormones |
| oxytocin | posterior pituitary; stimulates uterine contractions during childbirth |
| hypothalamus | produces releasing factors for hormones in anterior pituitary |
| anti-diuretic hormone | promotes reabsorption of water from kidneys |
| T3 and T4 | thyroid; controls metabolism of glucose and production of energy; regulated by thyroid-stimulating hormone from anterior pituitary |
| calcitonin | thyroid; promotes storage of calcium in bones, thus lowering calcium levels in the blood; opposite effect of parathyroid hormone |
| exocrine gland | gland whose secretions travel to nearby target gland through ducts such as tears, sweat, saliva |
| endocrine gland | secretions travel in blood to influence a target gland in another part of body |
| melatonin | pineal gland; thought to regulate sleep patterns |
| serotonin | pineal gland; thought to prevent constriction of blood vessels in head |
| homeostasis | maintenance of a stable internal environment |
| parathyroid hormone | parathyroid gland; stimulates release of calcium from bones into the bloodstream; opposite effect of calcitonin |
| epinephrine | adrenal medulla; activates nervous system to act in stress |
| cortisol | adrenal cortex; increases glucose level in blood during stress; regulated by adrenocorticotrophic hormone from anterior pituitary |
| glucagon | pancreas; increases blood level of glucose |
| insulin | pancreas; metabolizes sugar |
| negative feedback mechanism | a drop in hormone level triggers the response necessary to increase the amount of hormone in the blood |
| pancreas | gland which has both exocrine and endocrine secretions |
| testosterone | testes; regulates male sexual characteristics; regulated by luteinizing hormone from anterior pituitary |
| progesterone | ovaries; maintains lining of uterus; regulated by luteinizing hormone from anterior pituitary |
| ovulation | release of mature egg from follicle |
| endometrium | lining of uterus |
| corpus luteum | structure produced from ruptured ovarian follicle which secretes estrogen and progesterone to maintain pregnancy |
| placenta | lifeline through which mother nourishes baby; secretes human chorionic gonadotropin |
| human chorionic gonadotropin | hormone measured in pregnancy test |