1. Chapter 18 Notes

2. Chapter 18.1 Endocrine glands >>> Ductless – or tubeless – organs or groups of cells that secrete hormones directly into the bloodstream.

3. Hormones >>> Chemical substances that are produced in glands and help regulate many of your body’s functions.

4. Thyroid gland >>> Produces hormone that regulate metabolism, body heat, and bone growth.

5. Parathyroid gland >>> Produce a hormone that regulates the body’s calcium and phosphorus balance.

6. Pancreas >>> A gland that serves both the digestive and the endocrine systems.

7. Pituitary gland >>> Regulates and controls the activities of all of the other endocrine glands.

8. Gonads >>> The ovaries and the testes.

9. Adrenal glands >>> Glands that help the body recover from stress and respond to emergencies.

10. Chapter 18.2 Reproductive system >>> The system of organs involved in producing offspring.

11. Sperm >>> The male reproductive cells.

12. Testes >>> Two small glands that produce sperm.

13. Testosterone >>> The male sex hormone.

14. Scrotum >>> An external skin sac.

15. Penis >>> A tube shaped organ that extends from the trunk of the body just above the testes.

16. Semen >>> A thick fluid containing sperm and other secretions from the male reproductive system.

17. Sterility >>> The inability to reproduce.

18. Chapter 18.3 Uterus >>> A hollow, muscular, pear-shaped organ inside a female’s body.

19. Ovaries >>> The female sex glands that store the ova and produce female sex hormones.

20. Ova >>> Female reproductive cells.

21. Ovulation >>> The process of releasing a mature ovum into the fallopian tube each month.

22. Fallopian tubes >>> A pair of tubes with fingerlike projections that draw in the ovum.

23. Vagina >>> A muscular, elastic passageway that extends from the uterus to the outside of the body.

24. Cervix >>> The opening to the uterus.

25. Menstruation >>> Shedding of the uterine lining.

26. Question #5 - Quiz Which endocrine glands become more active during puberty? Name the hormones these glands produce, and apprasie their effects on changes in the bodyduring adolescence.