Feedback Mechanisms Review AP Biology/ Ms. Day Identify each of the following as an example of Positive (P) or Negative (N) feedback______ Response is opposite of or counters the stimulus______ Response amplifies or reinforces the stimulus______ Continues to disrupt homeostasis______ Restores homeostasis

______ When blood pH levels fall below a set point, the kidneys collect and remove more H+ (hydrogen ions) from the blood, thus bring the blood pH levels back to normal

______ The female hormone estrogen triggers the release of the luteinizing hormone (LH); increased production of LH increases the production and release of estrogen

______ The anterior pituitary gland produces a hormone called FSH (follicle stimulating hormone); FSH causes the ovaries to produce/release estrogen; increased production of estrogen causes a decrease in production of FSH

______ When blood calcium levels rise above a set point (hypercalcemia) specialized cells in the thyroid secrete a hormone called calcitonin. Calcitonin causes specialized cells in bone tissue to take calcium out of the blood and store in bone tissue. Calcium can also be stored in the sacroplasmic reticulum

Endocrine System ReviewMatch the structure with the correct letter from the diagram. Then write the name of the hormone described. 1. Release a hormone involved in the fight or flight reaction

LETTER = _____ HORMONE= ______________________2. Gland that produces antagonistic hormones (in same gland) that controls blood sugar levels

LETTER = _____Which hormone raises blood sugar? _________ Which hormone lowers blood sugar? _____________

2. Gland that produces a hormone that lowers calcium levels in bloodLETTER = _____ HORMONES= ______________________

3. Gland that produces a hormone that raises calcium levels in bloodLETTER = _____ HORMONES= ______________________

4. Produces a hormone in response to lightLETTER = _____ HORMONE= ______________________

5. Produces hormone in response to stress LETTER = _____ HORMONE= ______________________

6. Produces a hormone to stimulate egg or sperm production LETTER = _____ HORMONE= ______________________

7. Produces a hormone that regulates mammary glands (milk production)LETTER = _____ HORMONE= ______________________

8. Produces a hormone that regulates water retention in kidneysLETTER = _____ HORMONE= ______________________

9. Storehouse of hypothalamic hormones _______LETTER = _____ HORMONE= ______________________

10. Produces hormones that promote secondary sexual characteristics in females during puberty LETTER = _____ HORMONE= ______________________

11. Produces a hormone that regulates pain receptionLETTER = _____ HORMONE= ______________________

12. Produces hormones to stimulate bone growthLETTER = _____ HORMONE= ______________________

13. Releases hormones that control the pituitary glandLETTER = _____

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