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Endocrine System
| Term | Definition |
|---|---|
| Hormones regulate | essentials to stay busy |
| Exocrine glands | ducts |
| endocrine glands | directly in bloodstream, slow but long lasting. only in endocrine systemm |
| hormones | slower but longer lasting control. for communication |
| nervous system | faster but short term control |
| 2 major classes of hormones | nonsteriod and steriod |
| nonsteriod hormones | 1st messengers, binds to receptor, whole protein, short train of amino acids, single |
| steriod horrmones | 2nd messenger, pass through cytoplasm and then binds with receptor |
| camp. | goes inside cell and activates enzymes |
| nonsteriod binds to- | membrane, activates 2nd messenger, changes cell activity, and no entry in cell. |
| steriods can- | eneter cell, pass directly through cell membrane, bind to normal nucleus. slower because they make protein to change dna. |
| hormone secretion | is controlled by homeostatsis feedback |
| negative feedback | body reverses chnage to go back to normal |
| positive feedback | makes the problem bigger |
| oxytocin | causes contractions |
| insulin- | lowers blood sugar |
| If pancreas doesn't produce enough insulin- | you will be diagnosed with diabetes myellitus |
| negative feedback set up- | high glucose, pancreas releases insulin, glucose moves into cells, blood glucose decreases. |
| prostaglandins (pgs) | don't travel, act on nearby cells, local messengers. |
| PG | affects breathing, blood pressure, digestion and reprodution, pain, fever, imflammation |
| pituitary gland, master gland | controls many other glands |
| adeno | gland |
| neuro | nervous |
| if growth hormone is affected- | anterior |
| TSH- | stimulates thyroid glands to release hormones and increases metabolism |
| anterior pituitary gland includes | tsh, acth,and fsh, lh, gh, prl |
| acth- | adrenal gland, release cortisol, stress response. stimulates growth of andrenal cortex |
| fsh | reproduction, eggs female, sperm male. stimulates estrogen secretion by developing focilles. stimulates sperm production in males. |
| growth hormone-gh | growth and increases blood glucose |
| prolactin- prl | milk production and breast development |
| lutenizing hormone-lh | releases egg, ovulation in females and testoserone in males |
| posterior glands include | adh, ot, |
| antidiuretic hormone-adh | helps body save water, when working less urine |
| oxytocin-ot | causes breasts to release milk, causes coontractions |
| diabetes insipidus | exessive thrist and urine |
| hypothalmus | control center, temp. appetite, thrist, both nervous and endocrine. |
| ADH and OT | are made in the hypothalmus, and releqsed from posterior and pituitary |
Created by:
gabbyc420