1. Notes 16-1 The Endocrine System

2. Chapter Preview Questions 1. What does a child inherit from the male parent? a. all of his genetic information b. half of his genetic information c. double his genetic information d. none of his genetic information

3. Chapter Preview Questions 1. What does a child inherit from the male parent? a. all of his genetic information b. half of his genetic information c. double his genetic information d. none of his genetic information

4. Chapter Preview Questions 2. An egg and a sperm are needed for sexual reproduction so the child will a. have a full set of genetic material. b. inherit traits from the dominant parent. c. inherit traits from only one parent. d. have differentiated cells.

5. Chapter Preview Questions 2. An egg and a sperm are needed for sexual reproduction so the child will a. have a full set of genetic material. b. inherit traits from the dominant parent. c. inherit traits from only one parent. d. have differentiated cells.

6. Chapter Preview Questions 3. Which part of the cell carries hereditary information? a. mitochondrion b. vacuole c. chromosome d. cell membrane

7. Chapter Preview Questions 3. Which part of the cell carries hereditary information? a. mitochondrion b. vacuole c. chromosome d. cell membrane

8. Chapter Preview Questions 4. As multicellular organisms develop, how do their cells change? a. The cells differentiate into specialized cells b. The cells divide into identical cells c. The cells are passed on to their offspring d. The cells die off

9. Chapter Preview Questions 4. As multicellular organisms develop, how do their cells change? a. The cells differentiate into specialized cells b. The cells divide into identical cells c. The cells are passed on to their offspring d. The cells die off

10. The endocrine system Produces chemicals that control many of the body’s daily activities. Regulates long term changes such as growth and development.

11. Glands The endocrine system is made up of glands. A gland is an organ that produces or releases a chemical. Endocrine glands produce and release hormones (chemicals) into the bloodstream. The blood then carries the hormones throughout the body. The endocrine glands include the hypothalamus, pituitary, thyroid, parathyroid, adrenal, thymus, pancreas, testes, and ovaries.

12. Hormones Hormones are chemical messengers that interact with specific cells called target cells. They are often released by nerve impulses. Turn on, turn off, speed up, or slow down the activities of different organs and tissues. Examples: Adrenaline, Insulin, Testosterone, Estrogen, Growth Hormone

13. Functions of Endocrine Glands

15. The pituitary gland communicates with the hypothalamus to control many body activities.

16. Negative Feedback Through negative feedback, when the amount of a particular hormone in the blood reaches a certain level, the endocrine system sends signals that stop the release of that hormone.