| A | B |
|---|
| hormones | chemicals that affect certain parts of your body |
| secrete | release or give off fluid |
| glands | special organs that secrete hormones |
| endocrine glands | glands without ducts |
| pituitary gland | controls your growth rate; "master gland" |
| heredity | features that you get from your parents |
| growth hormone | controls how fast you grow |
| thyroid gland | controls how fast your body uses energy |
| metabolism | rate that you body cells use energy |
| thyroxin | hormone secreted by the thyroid gland |
| adrenal glands | one on each of your kidneys |
| adrenaline | hormone that gives your body extra energy |
