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Human Reproductive System

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Presentation on theme: "Human Reproductive System"— Presentation transcript:

1 Human Reproductive System


3 Sperm duct

4 I. Human Reproductive System
Open Sciencesaurus to Define specialized cells. A specialized cell is a cell that takes on a special job. 2. What is the name of the specialized cell in females? egg cells

5 Human Reproductive System
3. What is the name of the specialized cell in males? sperm cells 4. Why is genetic material important? Because genetic material contains the information that an organism needs to form, develop, and grow.

6 Human Reproductive System
5. What do the specialized cells do? They provide genetic material. 6. What is the role of hormones in sexual development? Hormones produced in the endocrine system signal the start of sexual development.

7 Human Reproductive System
7. What human body system makes hormones? Endocrine system

8 Female Reproductive System
8. Copy and label the diagram in section What are the 2 functions of the female reproductive system? A. To produce egg cells. B. To protect and nourish the offspring until birth.

9 Female Reproductive System
10. Where are the egg cells stored? The egg cells are stored in the ovaries. 11. How do the ovaries know to release an egg cell? The ovaries release an egg cell when pituitary gland releases hormone.

10 Female Reproductive System
12. Define menstruation. Flow of blood and tissue from body through vagina 13. How long does menstruation last? For about 5 days 14. How often does menstruation occur? Occurs every 28 days

11 Female Reproductive System
15. Describe the process of menstruation (the path the egg cell takes beginning with the ovary) if fertilization does NOT take place. During menstruation, egg cell travels from ovary, through fallopian tube, through uterus, through vagina.

12 Male Reproductive System
16. Copy and label the diagram in section Where are sperm produced? produced in testes

13 Male Reproductive System
18. What are the 2 things the hormone produced in the testes do? A. Controls development of sperm. B. Causes development of facial hair and deep voice.

14 Male Reproductive System
19. When do males begin producing sperm? Sometime during adolescence

15 Male Reproductive System
20. What is the name of the fluid sperm travel in? semen 21. How many sperm cells are in 1 drop of semen? several million

16 Reproductive System 22. List and explain the 3 parts of reproduction. A. Fertilization – When 1 sperm cell joins the egg cell. B. Pregnancy – 9 months for fertilized egg cell (embryo) to develop fully (fetus). C. Birth – fully developed fetus ready to be born.

17 Reproductive System 23. Define fertilization. When 1 sperm cell joins the egg cell. Occurs in fallopian tubes.

18 Reproductive System 24. During fertilization, list the path the sperm takes, beginning with the testes. From the testes, through the penis, through the vagina and uterus, and into a fallopian tube.

19 Reproductive System 25. Where does fertilization take place?
In a fallopian tube.

20 Reproductive System 26. After fertilization, list the path the fertilized egg takes. Fertilization takes place in fallopian tube, cell division begins and then fertilized egg moves to the uterus where it attaches to the lining. 27. Define embryo. Name of fertilized egg after cell division occurs.

21 Reproductive System 28. How long does pregnancy last? 9 months
29. Why is the placenta important? Oxygen and nutrients from the mother’s body move through placenta and umbilical cord to the growing embryo.

22 Reproductive System 30. List and define the 3 steps of birth (labor and delivery). Labor – muscle contractions in uterus every 10 to 30 minutes. Delivery – fetus pushed out of uterus, through vagina, and out of body. Birth of placenta – after offspring born, placenta separates from uterus and leaves mother’s body.

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