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 Review Match 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 blood LETTER = _____ HORMONES= ______________________ 3. Gland that produces a hormone that raises calcium levels in blood LETTER = _____ HORMONES= ______________________ 4. Produces a hormone in response to light LETTER = _____ 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 kidneys LETTER = _____ HORMONE= ______________________ 9. Storehouse of hypothalamic hormones _______ LETTER = _____ HORMONE= ______________________ 1