Download presentation
Presentation is loading. Please wait.
1
Human Reproductive System
Lecture 23 Human Reproductive System
2
Anatomy of the Male Reproductive System
Testes Produce spermatozoa (gametes) Produce androgens (hormones) Series of ducts Accessory glands (3) Secretions added to sperm to form semen Seminal vesicle, prostate gland, and bulbourethral gland Ureters Urinary bladder Seminal vesicle Ductus deferens Ejaculatory duct Prostate gland Bulbourethral gland Urethra Anus Penis Epididymis Glans Testis Prepuce Scrotum Fig
3
Anatomy of the Male Reproductive System
Supporting structures Scrotum 2 chambered sac that contains testes Muscles help regulate temperature Penis Important sexual organ and part of the urinary system Ureter Penis Urinary bladder Ductus deferens Spermatic cord Epididymis Cremaster muscle Testis Dartos muscle Scrotum Fig
4
Descent of Testes Descent
Pass from abdominal cavity through inguinal canal to scrotum
5
Testes Compartments divided by septa Seminiferous tubules Epididymis
Empty into efferent ductules Efferent ductules empty into epididymis Epididymis Site of sperm cell maturation 12-16 days Fig
6
Male Reproductive Structures Ducts
Urinary bladder Ductus deferens or vas deferens Passes from epididymis into abdominal cavity Ejaculatory duct Joining of ductus deferens and seminal vesicle Ureter Seminal vesicle Ejaculatory duct Prostate gland Bulbourethral gland Ductus deferens Urethra Epididymis Testis Fig
7
Male Reproductive Structures Urethra
Urinary bladder Urethra Extends from urinary bladder to distal end of penis Passageway for urine and male reproductive fluids Ureter Seminal vesicle Ejaculatory duct Prostate gland Bulbourethral gland Ductus deferens Urethra Epididymis Testis Fig
8
Male Reproductive Structures Penis
Three columns of erectile tissue that engorge with blood Corpora cavernosa (2) Corpus spongiosum (1) Glans penis Prepuce or foreskin covers Circumcision: Surgical removal Urinary bladder Ureter Corpus cavernosum Urethra Testis Penis Corpus spongiosum Glans Fig Clinical View, pg. 866
9
Anatomy of Female Reproductive System
Ureter Female reproductive organs Ovaries Uterine tubes Uterus Vagina External genital organs Mammary glands Uterine tube Ovary Fimbriae of uterine tube Uterus Urinary bladder Cervix of uterus Rectum Urethra Vagina Clitoris Anus External urethral orifice Vaginal orifice Fig. 28.2
10
Uterine Tubes Uterine or fallopian tubes or oviducts
Open directly into peritoneal cavity to receive oocyte from ovary Transport oocyte or zygote from ovary to uterus Uterine tube Infundibulum Uterus Fimbriae Ovary Broad ligament Cervix Ureter Vagina (a) Posterior view Fig. 28.3
11
Uterus & Vagina Uterus Parts: fundus, body, cervix
Composed of 3 layers Perimetrium: Serous membrane Myometrium: Smooth muscle Endometrium: Mucous membrane Fig. 28.7
12
Female External Genitalia
Vulva external female genitalia Vestibule: Space Labia minora: Form borders on sides Clitoris: Erectile structure Corpora cavernosa Corpora spongiosa Fig. 28.9
13
Review Question The structure of the female reproductive system that is homologous to the penis of the male system is the Vagina Labia minora Uterus Fallopian tubes Clitoris
14
Points to Remember Male and female reproductive systems share similarities as evidence of homology Important functions of: Production of gametes and sex hormones Production of sperm (temperature-sensitive) Receiving sperm (semen is mixture of sperm and secretions of three accessory glands) Providing site for development of fetus and birth Breast milk secretions provide nourishment
15
Questions?
Similar presentations
