26-1 lecture 23 human reproductive system. 26-2 anatomy of the male reproductive system testes...
TRANSCRIPT
![Page 1: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/1.jpg)
26-1
Lecture 23
Human Reproductive System
![Page 2: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/2.jpg)
26-2
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 semensemen
– Seminal vesicle, prostate gland, and bulbourethral gland
Fig. 28.11
Urinary bladder
Ductusdeferens
Urethra
Penis
GlansPrepuce
Ureters
Seminal vesicle
Ejaculatory duct
Prostate gland
Bulbourethral glandAnus
Epididymis
Testis
Scrotum
![Page 3: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/3.jpg)
26-3
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
Fig. 28.12
Ureter
Urinary bladder
Ductus deferens
Epididymis
Testis
Penis
Spermatic cord
Cremaster muscle
Dartos muscle
Scrotum
![Page 4: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/4.jpg)
26-4
Descent of Testes• Descent
– Pass from abdominal cavity through inguinal canal to scrotum
![Page 5: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/5.jpg)
26-5
Testes• Compartments divided
by septa– Seminiferous tubules
• Empty into efferent ductules
• Efferent ductules empty into epididymis
– Epididymis• Site of sperm cell
maturation• 12-16 days
Fig. 28.13
![Page 6: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/6.jpg)
26-6
Male Reproductive StructuresDucts
• Ductus deferens or vas deferens– Passes from
epididymis into abdominal cavity
• Ejaculatory duct– Joining of ductus
deferens and seminal vesicle
Urinary bladder
Ureter
Seminal vesicle
Ejaculatoryduct
Prostategland
Bulbourethral gland
Urethra
Ductus deferens
Testis
Epididymis
Fig. 28.15
![Page 7: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/7.jpg)
26-7
Male Reproductive StructuresUrethra
• Urethra– Extends from urinary
bladder to distal end of penis
– Passageway for urine and male reproductive fluids
Urinary bladder
Ureter
Seminal vesicle
Ejaculatoryduct
Prostategland
Bulbourethral gland
Urethra
Ductus deferens
Testis
Epididymis
Fig. 28.15
![Page 8: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/8.jpg)
26-8
Male Reproductive StructuresPenis
• Three columns of erectile tissue that engorge with blood– Corpora cavernosa (2)
– Corpus spongiosum (1)
• Glans penis– Prepuce or foreskin
covers• Circumcision: Surgical
removal
Glans
Urinary bladder
Ureter
Urethra
Testis
Corpus cavernosum
Penis
Corpus spongiosum
Fig. 28.15Clinical View, pg. 866
![Page 9: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/9.jpg)
26-9
Anatomy of Female Reproductive System
• Female reproductive organs– Ovaries– Uterine tubes– Uterus– Vagina– External genital
organs– Mammary glands Fig. 28.2
Anus
Uterine tube
Ovary
Uterus
Urinary bladder
Urethra
ClitorisExternal urethral
orificeVaginal orifice
Ureter
Fimbriae of uterine tube
Cervix of uterus
Rectum
Vagina
![Page 10: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/10.jpg)
26-10
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 Fig. 28.3(a) Posterior view
Broad ligament
Uterine tube
Cervix Ureter
UterusFimbriae
Ovary
Infundibulum
Vagina
![Page 11: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/11.jpg)
26-11
Uterus & Vagina
• Uterus– Parts: fundus, body, cervix– Composed of 3 layers
• Perimetrium: Serous membrane • Myometrium: Smooth muscle• Endometrium: Mucous membrane
Fig. 28.7
![Page 12: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/12.jpg)
26-12
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
![Page 13: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/13.jpg)
26-13
Review Question
The structure of the female reproductive system that is homologous to the penis of the male system is the
(a) Vagina(b) Labia minora(c) Uterus(d) Fallopian tubes(e) Clitoris
![Page 14: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/14.jpg)
26-14
Points to RememberPoints 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
![Page 15: 26-1 Lecture 23 Human Reproductive System. 26-2 Anatomy of the Male Reproductive System Testes –Produce spermatozoa (gametes) –Produce androgens (hormones)](https://reader037.vdocuments.mx/reader037/viewer/2022110101/56649e5e5503460f94b57c4f/html5/thumbnails/15.jpg)
26-15
Questions?