| A | B |
|---|
| Endocrine system | Group of ductless glands that release hormones into the circulatory system |
| Nervous system | Causes immediate reaction |
| Hormones | Chemical substances that travel through the bloodstream and affect a gland or organ |
| Glands | A cell or group of cells that secrete fluids |
| Hypothalamus | Portion of the brain that controls the pituitary gland |
| Pituitary gland | Master endocrine gland, linked to hypothalamus with nerves and vessels |
| Thyroid gland | Creates amino acid hormones, secretes thyroxin to stimulate growth |
| Parathyroid gland | Secretes amino acid hormones and parathyroid hormone |
| Adrenal medulla | Creates amino acid hormones and secretes epinephrine and norepinephrine |
| Adrenal cortex | Creates steroid hormones and secretes glucocorticoid and aldosterone |
| Ovary | Secretes female sex hormones |
| Testis | Secretes male sex hormones |
| Epinephrine | Fight or flight response |
