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Chapter 28, part 1

Chapter 28, part 1. The Reproductive System. SECTION 28-1 The Reproductive System. Learning Objectives. Specify the components of the reproductive system, and summarize their functions Describe the components of the male and female reproductive systems

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Chapter 28, part 1

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  1. Chapter 28, part 1 The Reproductive System

  2. SECTION 28-1The Reproductive System

  3. Learning Objectives • Specify the components of the reproductive system, and summarize their functions • Describe the components of the male and female reproductive systems • Outline the processes of meiosis and gametogenesis in both sexes • Explain the roles played by the male reproductive tract and accessory glands in the functional maturation, nourishment, storage, and transport of spermatozoa

  4. Learning Objectives • Summarize the anatomical, physiological, and hormonal aspects of the male and female reproductive cycles • Discuss the physiology of sexual intercourse

  5. Reproductive System • Reproductive system functions in gamete • Production • Storage • Nourishment • Transport • Fertilization • Fusion of male and female gametes to form a zygote

  6. SECTION 28-1Introduction to the Reproductive System

  7. Reproductive system includes: • Gonads (testes, ovaries) • Ducts • Accessory glands and organs • External genitalia

  8. Males and Females • Males • Testes produce spermatozoa • Expelled from body in semen during ejaculation • Females • Ovaries produce oocytes • Immature ovum • Travels along uterine tube toward uterus • Vagina connects uterus with exterior of body

  9. SECTION 28-2The Reproductive System of the Male

  10. Male Reproductive System • Pathway of spermatozoa • Epididymis • Ductus deferens • Ejaculatory duct • Accessory organs • Seminal vesicles • Prostate gland • Bulbourethral glands • Scrotal sac encloses testes • Penis

  11. Figure 28.1 The Male Reproductive System Figure 28.1

  12. The testes • Descent of the testes • Movement of testes through inguinal canal into scrotum • Occurs during fetal development • Testes remain connected to internal structures • Spermatic cords

  13. Figure 28.2 The Descent of the Testes Figure 28.2a

  14. Figure 28.2 The Descent of the Testes Figure 28.2b

  15. Figure 28.3 The Male Reproductive System in Anterior View Figure 28.3

  16. Male Anatomy • Musculature of scrotal sac • Dartos muscle wrinkles scrotal sac • Cremaster muscle pulls sac close to body • Testes anatomy • Tunica albuginea surrounds testis • Septa extend from tunica albuginea to epididymus • Lobules

  17. Sperm production • In seminiferous tubules • Interstitial cells between seminiferous tubules • Secrete sex hormones • Sperm pass through rete testis • Efferent ductules connect rete testis to epididymus

  18. Figure 28.4 The Structure of the Testes Figure 28.4

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