1. FEMALE AND MALE REPRODUCTIVE SYSTEMS

2. MALE GENITAL ORGANS Internal Genital Organs External Genital Organs
Testes
Epididymis
Ductus deferens
Ejaculatory duct
Accessory glands
Seminal Vesicle
Prostate
Bulbourethral gland
External Genital Organs
Penis
Scrotum

3. TESTES Paired oval glands located in scrotum
5 cm long and 3 cm in diameter
Surrounded by dense white capsule (tunica albuginea)

4. 250 lobules.
1 to 4 -seminiferous tubules
Short efferent ducts exit the testes.

5. Seminiferous Tubules
Seminiferous tubules contain
Interstitial cells

6. Seminiferous tubule
Straight tubule
Rete testis
Efferent duct
Ductus Epididymis
Ductus deferens

7. EPIDIDYMIS
6 meters
maturation process

8. EPIDIDYMIS
head
body
Tail

9. Duct System
epididymis, ductus deferens, ejaculatory duct, and urethra.

10. Spermatic Cord
contains the proximal ductus deferens, testicular artery and veins, lymph vessels, testicular nerve, cremaster muscle and a connective tissue covering.

11. Ejaculatory Duct Ampulla
Each ejaculatory duct passes through the prostate gland and empties into the urethra.

12. Semen Mixture of sperms and seminal fluid
60% from seminal vesicles, 30% from prostate
Slightly alkaline, milky appearance and sticky
Contains nutrients, clotting proteins & an antibiotic to protect the sperms
Typical ejaculate is 2.5 to 5 ml in volume
Normal sperm count is 50 to 150 millions/mL
Actions of many sperm are needed for one to enter
If less than 20 millions/mL sterile

13. Scrotum skin and subcutaneous tissue septum dartos muscle
cremaster muscle

14. PENIS
is a cylindrical pendant organ located anterior to the scrotum and functions to transfer sperm to the vagina.
consists of three columns of erectile tissue that are wrapped in connective tissue and covered with skin. The two dorsal columns are the corpora cavernosa. The single, midline ventral column surrounds the urethra and is called the corpus spongiosum.
the male copulatory organ, is a cylindrical pendant organ located anterior to the scrotum and functions to transfer sperm to the vagina.
consists of three columns of erectile tissue that are wrapped in connective tissue and covered with skin. The two dorsal columns are the corpora cavernosa. The single, midline ventral column surrounds the urethra and is called the corpus spongiosum.

15. Tunica albuginea
Septum penis
Trabecula corporum cavernosum/spongiosi
Caverna corporum cavernosum/spongiosi

16. Erection Involves increase in length, width & firmness
Changes in blood supply: arterioles dilate, veins constrict
The spongy erectile tissue fills with blood
Erectile Dysfunction [ED] also known as impotence

17. Emission and Ejaculation
Muscle contractions close sphincter at base of bladder
Fluids propelled through ductus deferens, seminal vesicles, & ejaculatory ducts into bulb of penis
Prostatic fluid secreted into urethra
Ejaculation
Sympathetic nervous system reflex
Skeletal muscles squeeze semen out through urethra