1. BIOL 204 – Lab 13 The Reproductive System - Anatomy

2. Scrotum Objective 1 Structures of the Male Reproductive Tract
The Scrotum
Location Structure Function(s)
located outside of the is a pouch of thin, dark hold the testes outside of the body cavity; below skin body cavity the root of the penis and the pubic the walls of the scrotum symphysis contain the dartos muscle which, when contracted, gives the scrotum a wrinkled appearance
contains numerous sebaceous glands
the cremaster muscle raises and lowers the testes to ensure proper temperature for sperm production
Scrotum

4. Location Structure Function
Tubules
Location Structure Function
Epididymus superior aspect comma shaped adsorb excess testicular fluid of each testes tube in a coil and secrete factors that make (6 m long) sperms more mature and motile
has a head, a body and a tail
Epididymus (Pink)
H = head
B = body
T = tail

5. Location Structure Function(s)
The Testes
Location Structure Function(s)
Each teste lies obliquely -oval; weight g -spermatogensis in the scrotum -4cmX 3cm X 2.5 cm -manufactures hormones
supplied by the testicular artery and the testicular vein
each teste is covered by a white, inelastic capsule called the tunica albuginea
internally the teste is divided into 150 lobules
each lobule has 1-3 seminiferous tubules

6. Location Structure Function
Vas (Ductus) travels upward an epithelial tube carries sperm into the body Deferens into the body about 45 cm cavity cavity as part long; the expanded of the spermatic end is called the cord ampulla
it arches medially over the ureter and descends along the posterior wall of the urinary bladder

7. Location Structure Function
Ejaculatory Duct passes from the a short, 3cm carries semen from the vas deferens epithelial tube vas deferens to the through the urethra prostate gland, to the urethra

8. Location Structure Function
Urethra extends from the there are three carries both urine and urinary bladder portions: semen to the surface of the to the tip of the body penis
Prostatic portion: 2.5 cm long; begins at the internal urethral orifice and extends through the prostate gland
Membranous portion: 1.5 cm long; travels through the urogenital diaphragm; the bulbourethral glands are at either side
Penile portion: 15 cm long; travels through the penis in the corpus spongiosum

9. Glands
Stucture Location Function(s)
Seminal vesicles lobular, paired posterior aspect produce about 1.5 to 3 ml of sticky glands about 5 cm of the bladder yellow fluid that contains fructose long and other nutrients for sperm and prostaglandins and vesciculase, a coagulating enzyme

10. Structure Location Function(s)
Prostate Gland a single, donut encircles the produces ml of shaped gland urethra at the slightly acidic fluid which base of the contains enzymes which bladder activate and nourish sperm

11. Prostate adrenocarcinoma – note whitish area at the periphery

12. Structure Location Function(s)
Bulbourethral small, paired located in the produce a few drops of Glands glands urogenital alkaline mucus which helps diaphragm, to neutralize vaginal acids inferior to the prostate gland

13. The penis is composed of tissue organized into three columns:
E. The Penis
The penis is composed of tissue organized into three columns:
(2) corpora cavernosa and (1) corpus spongiosum
- the corpora cavernosa contains vascular sinuses
- the corpus spongiosum contains the penile urethra; it expands at its end to form the glans penis; the glans is covered by a loose fold of tissue called the prepuce (foreskin)

14. sensory (pudendal and ilioinguinal nerves)
Nerve Supply:
sensory (pudendal and ilioinguinal nerves)
Motor (pudendal to muscles; ANS via the pelvic splanchnic nerve
SNS causes vasoconstriction and PNS causes vasodilation
Blood Supply
the internal pudendal artery and the external pudendal artery
The internal pudendal veins and the external pudendal veins; there are also two dorsal veins

15. Objective Histology
Microscopic Anatomy of the Penis – X Section

16. Testes

17. Sperm

18. Objective 3 Gross Anatomy - Female
Note the uterus (with fundus, myometrium, cervix, perimetrium, endometrium, body); the ovaries, uterine tubes (with fimbriae), vagina, and the ligaments (suspensory ligament, broad ligament, ovarian ligament, round ligament)

19. Lateral View -

20. Ovary and Fallopian Tube of a Multiparous Woman

21. Ovary with Ligament
Fallopian Tube

22. Ovaries, Uterine Tubes, Uterus and Vagina of a 40 year old multparous woman

23. Uterus, Unfixed

25. Female Breast Anatomy

26. Objective 4 Ovary -Histology

27. A benign Paratubular Cyst

28. Primary Follicles
Graafian Follicles
Corpus Luteum

29. Ectopic Pregnancy
                                                      1

30. Bicornuate Uterus
Rare in humans – this woman never carried a fetus to term