Endocrine System
Order by
19 terms
Terms | Definitions |
|---|---|
 Function of endocrine system | Chemical control center of the body works closely with the nervous system |
| Endocrine glands | secrete chemicals called hormones |
| Hormones | chemicals that are produced by glands, released into the blood and act on distant cells. |
| Target cells | cells that hormones act on |
| Receptors | proteins sticking out of membranes of target cells. Difference cells have different receptors |
| Amino acid based hormones | Epinephrine, insulin, adrenaline. Affect enzyme activity to initiate a short term change in the target cell. |
| Steroid based hormones | Testosterone, estrogen. Affect transcription of DNA to initiate long term changes in target cells. |
| Pituitary gland | master gland, controls many hormones |
| Hypothalamus | Sends messages to pituitary to turn on/off hormones. |
| Pineal gland | Secretes melatonin |
| Thyroid gland | Secretes metabolism growth hormone |
| Thymus gland | Defends body against germs |
| Parathyroid gland | Regulates calcium levels |
| Adrenal gland | Affects "fight of flight" response |
| Pancreas | regulates glucose levels |
| Ovaries | Produce eggs and secondary sex characteristics |
| Testes | Produces sperm and secondary sex characteristics |
| Negative feedback | A release of an initial hormone releases another hormone which stops the initial hormone |
| Positive feedback | A release of an initial hormone releases another hormone which tells the initial to keep going. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.