Exercise 16-3 Time to Trace! Negative Feedback Loops arler in this unit we poine

Question

Exercise 16-3 Time to Trace! Negative Feedback Loops arler in this unit we poined out than each homoe has ias ow dinturhance in the hoontasis of a paricular phy ariabke wach the concentration of glucose in the onperatuee. The homones to casse changes that restoee the variable so its nomal eange Whe homcostanis is reoeed, the assivity of the glands and concentration of the hormone declnes. This type of sespome i called a nogi foldback kwip. ln this esencise you will be tr through the hormone's effects on its the horsome in the blood Following is an esampke Start: the acing a homone's megative leedback loop fron the inatial homestatik dastwbance, targut cells to restore hoens asis, and nalls the ecline of the comcentration of t concentration of glocose in the hood falls+ the pancreas releaes glocagon +the level of the hormone elucapn in the blud ns-the hormone glucag m cau es g oop wdysis by the liver centrannofglu- the o the blood rissthe level of the hormone glucagom in the blood dacrea+End Now itsyour turn After you have completed the activity, anwer Check Your Undersanding qarstion 6 (p- 444) 1 Start: the concenstration of the blood inreaes (ie., there is maloquate water in the blood+the hypothalsmon and stores it in the releases the hormone the stored hormone the hormone the concentration of the blood is released and so its level in the blood rises +the level of the hormone in the bloosd End 16 2 Start: the conceneration of glucose in the blood increases+the pancreas rleases the hormone the level of the hormone in the blood rises the hoemone ? blood glucose levels ?the level of the hormone End in the blood 3 Start: the concentration of cakium ioesin the blooddcrasethe parathyroid glands release the hormone the level of the hormone carases in the blood rises -+the hormone + the concentration of calciom ions in the the level of the hormone blood End the blood Endocrine System UNIT 16 433

Explanation / Answer

Question 1

Answer

1. Antidiuretic hormone(ADH)

2. Posterior pituitary gland

3. Antidiuretic Hormone(ADH)

4. Antidiuretic Hormone(ADH)

5. Increases water Reabsorption

6. Decreases

7. Antidiuretic Hormone(ADH)

8. Decreases

Question 2

Answer

1. Insulin

2. Insulin

3. Insulin

4. increased glucose uptake

5.Decreases

6. Insulin

7. Decreases

Question 3

Answer

1. Parathyroid Hormone

2.Parathyroid hormone

3. Parathyroid hormone

4. Bone depletion and stimulate calcitriol

5. Increases

6. Decreases.

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