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UNIT B: Human Body Systems

Chapter 8: Human Organization Chapter 9: Digestive System Chapter 10: Circulatory System and Lymphatic System Chapter 11: Respiratory System Chapter 12: Nervous System Chapter 13: Urinary System Chapter 14: Reproductive System: Section 14.2. UNIT B: Human Body Systems. UNIT B.

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UNIT B: Human Body Systems

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  1. Chapter 8: Human Organization Chapter 9: Digestive System Chapter 10: Circulatory System and Lymphatic System Chapter 11: Respiratory System Chapter 12: Nervous System Chapter 13: Urinary System Chapter 14: Reproductive System: Section 14.2 UNIT B: Human Body Systems

  2. UNIT B Chapter 14: Reproductive System Chapter 14: Reproductive System In this chapter you will learn about the male and female reproductive systems, the ovarian and uterine cycles, and disorders of the reproductive systems. • What different events must occur before fertilization? • What is the function of the umbilical cord? Cord blood banking. Cord blood can be used to treat diseases such as leukemia, lymphoma, and other blood and immune system disorders. After an umbilical cord blood sample is collected, it is stored in a cord blood bank. There are both private and public banks. TO PREVIOUS SLIDE

  3. UNIT B Chapter 14: Reproductive System Section 14.2 In the female reproductive system, the gamete is the egg or oocyte. The oocyte is produced by oogenesis in the female gonads, the ovaries The ovaries alternate in producing one oocyte per month Ovulation is the process by which an oocyte bursts from an ovary and enters the oviduct 14.2 Female Reproductive System TO PREVIOUS SLIDE

  4. UNIT B Chapter 14: Reproductive System Section 14.2 Figure 14.5 The female reproductive system. The ovaries release one egg a month; fertilization occurs in the oviduct, and development occurs in the uterus. The vagina is the birth canal, as well as the organ of sexual intercourse and the outlet for menstrual flow. TO PREVIOUS SLIDE

  5. UNIT B Chapter 14: Reproductive System Section 14.2 Oviducts (fallopian tubes) When oocyte bursts from ovary, fimbriae sweep over the ovaries to conduct the oocyte into an oviduct The oocyte is propelled by cilia and muscle contractions toward the uterus and only lives about 6-24 hours unless fertilization occurs Fertilization and formation of a zygote occurs in the oviduct Genital Tract TO PREVIOUS SLIDE

  6. UNIT B Chapter 14: Reproductive System Section 14.2 The developing embryo implants in the uterine lining several days after fertilization An ectopic pregnancy occurs when the embryo implants outside the uterus (e.g., oviduct) • Uterus (womb): lined with endometrium, which helps form the placenta; houses the developing fetus • Cervix: contains opening to uterus and connects with vagina • Vagina: serves as the birth canal, exit for menstrual flow, and facilitates sexual intercourse TO PREVIOUS SLIDE

  7. UNIT B Chapter 14: Reproductive System Section 14.2 TO PREVIOUS SLIDE

  8. UNIT B Chapter 14: Reproductive System Section 14.2 Vulva (external female genital organs) Labia majora: large folds of skin covered with hair Labia minora: small folds of skin inside the labia majora Mons pubis: fatty area underlying pubic hair Clitoris: organ of sexual arousal Hymen: ring of tissue that partially blocks the vagina External Genitals Figure 14.6 External genitals of the female. The opening of the vagina is partially blocked by a membrane called the hymen. Physical activities and sexual intercourse disrupt the hymen. TO PREVIOUS SLIDE

  9. UNIT B Chapter 14: Reproductive System Section 14.2 During sexual stimulation: Labia minora, vaginal wall, and clitoris become engorged with blood Labia majora enlarge, redden, and spread away from vaginal opening Vagina expands and elongates Lubrication for the vagina is provided by blood vessels in the vaginal wall that release fluid and by mucus-secreting glands beneath the labia minora Orgasm occurs at the height of sexual response; females have little or no refractory period between orgasms Orgasm in Females TO PREVIOUS SLIDE

  10. UNIT B Chapter 14: Reproductive System Section 14.2 Explain how a tubal ligation, or cutting and sealing off the uterine tubes, prevents pregnancy. Explain how males and females differ in the specialization of their genital tract for reproduction versus urination. Describe the event(s) that occur during a female orgasm that may increase the chances of fertilization. Check Your Progress TO PREVIOUS SLIDE

  11. UNIT B Chapter 14: Reproductive System Section 14.2 TO PREVIOUS SLIDE

  12. UNIT B Chapter 14: Reproductive System Section 14.2 TO PREVIOUS SLIDE

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