Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Fundamentals of Anatomy & Physiology SIXTH EDITION Frederic H. Martini PowerPoint ® Lecture Slide Presentation prepared by Dr. Kathleen A. Ireland, Biology Instructor, Seabury Hall, Maui, Hawaii Chapter 28, part 1 The Reproductive System
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings SECTION 28-1 The Reproductive System
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings 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
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Learning Objectives Summarize the anatomical, physiological, and hormonal aspects of the male and female reproductive cycles Discuss the physiology of sexual intercourse
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Reproductive System Reproductive system functions in gamete Production Storage Nourishment Transport Fertilization Fusion of male and female gametes to form a zygote
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings SECTION 28-1 Introduction to the Reproductive System
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Reproductive system includes: Gonads (testes, ovaries) Ducts Accessory glands and organs External genitalia
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings 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
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings SECTION 28-2 The Reproductive System of the Male
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Male Reproductive System Pathway of spermatozoa Epididymis Ductus deferens Ejaculatory duct Accessory organs Seminal vesicles Prostate gland Bulbourethral glands Scrotal sac encloses testes Penis
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.1 The Male Reproductive System Figure 28.1
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Descent of the testes Movement of testes through inguinal canal into scrotum Occurs during fetal development Testes remain connected to internal structures Spermatic cords The testes
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.2 The Descent of the Testes Figure 28.2a
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.2 The Descent of the Testes Figure 28.2b
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.3 Figure 28.3 The Male Reproductive System in Anterior View
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings 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 Male Anatomy
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings In seminiferous tubules Interstitial cells between seminiferous tubules Secrete sex hormones Sperm pass through rete testis Efferent ductules connect rete testis to epididymus Sperm production
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.4 The Structure of the Testes Figure 28.4