| A | B |
| Endocrine System | Secretes hormones that regulate human body |
| Hormones | Secreted by glands into the bloodstream |
| Hypothalamus | Controls the release of hormones by the pituitary gland |
| Pituitary Gland | Controls the activities of other glands |
| Growth Hormone (GH) | ontrols the growth of the body by stimulating the elongation of bones |
| Thyroid Stimulating Hormone (TSH) | Stimulates the thyroid gland to produce its hormone thyroxin |
| Follicle Stimulating Hormone (FSH) | Stimulates the activities of the ovaries and testes |
| Thyroid Gland | Secretes thyroxin which contains iodine |
| Thyroxin | Regulates the rate of metabolism in the body and is essential for normal physical and mental development |
| Goiter | Disease from lack of iodine in the diet |
| Parathyroid Gland | Controls calcium metabolism |
| Adrenal Gland | Secretes adrenalin |
| Adrenal Cortex | Regulate water balance and blood pressure |
| Adrenalin | Increases the blood sugar level and accelerates the heart and breathing rate |
| Pancreas | Secrete insulin and glucagon |
| Insulin | Lowers blood sugar levels |
| Diabetes | When tPancreas fails to produce enough insulin |
| Testes | Secrete testosterone |
| Ovaries | Secrete estrogen |
| Negative Feedback | the level of one hormone in the blood inhibits the production of another hormone |
| Feedback mechanism | the level of one substance influences the level of another substance |
| Dynamic equilibrium | Balance using feedback mechanisms |
| Dynamic equilibrium | homeostasis |
| Homeostasis | internal stability/ balance |
| Testerone | Male sex hormone |
| Estrogen | Female sex hormone |