Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings

Fundamentals of

Anatomy & PhysiologySIXTH 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