Anatomy & Physiology SIXTH EDITION Chapter 28, part 1 The Reproductive System PowerPoint® Lecture Slide Presentation prepared by Dr.
Download ReportTranscript Anatomy & Physiology SIXTH EDITION Chapter 28, part 1 The Reproductive System PowerPoint® Lecture Slide Presentation prepared by Dr.
Fundamentals of
Anatomy & Physiology
SIXTH EDITION
Chapter 28, part 1
The Reproductive System
PowerPoint ® Lecture Slide Presentation prepared by Dr. Kathleen A. Ireland, Biology Instructor, Seabury Hall, Maui, Hawaii 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
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.1
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 Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings
Figure 28.2 The Descent of the Testes
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.2a
Figure 28.2 The Descent of the Testes
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.2b
Figure 28.3 The Male Reproductive System in Anterior View
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.3
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 Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings
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 Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings
Figure 28.4 The Structure of the Testes
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 28.4