2.Internal Organs
Testes
Paired oval glands located in the scrotum.
Functions:
Spermatogenesis: Production of
sperm cells in the seminiferous
tubules.
Production of testosteron (via Leydig cells).
Epididymis
Long, coiled tube located behind each testis.
Function: Sperm maturation and temporary
storage.
Vas Deferens
Muscular tube transporting sperm from the epididymis
to the ejaculatory duct.
Ejaculatory Ducts
Formed by the fusion of the vas deferens and seminal vesicles.
Function: Transport sperm to the urethra
Urethra
Shared pathway for urine and semen.
Divided into prostatic, membranous, and penile (spongy) segments.
3. Accessory Glands
Seminal Vesicles
Produce alkaline seminal fluid (60% of semen), rich in fructose and
prostaglandins.
Prostate Gland
Produces prostatic fluid, enhancing sperm motility and viability.
Bulbourethral (Cowper’s) Glands
Secretes lubricating mucus and neutralizes acidic urine in the urethra.
Testes
Paired oval glands located in the scrotum.
Functions:
Spermatogenesis: Production of
sperm cells in the seminiferous
tubules.
Production of testosteron (via Leydig cells).
Epididymis
Long, coiled tube located behind each testis.
Function: Sperm maturation and temporary
storage.
Vas Deferens
Muscular tube transporting sperm from the epididymis
to the ejaculatory duct.
Ejaculatory Ducts
Formed by the fusion of the vas deferens and seminal vesicles.
Function: Transport sperm to the urethra
Urethra
Shared pathway for urine and semen.
Divided into prostatic, membranous, and penile (spongy) segments.
3. Accessory Glands
Seminal Vesicles
Produce alkaline seminal fluid (60% of semen), rich in fructose and
prostaglandins.
Prostate Gland
Produces prostatic fluid, enhancing sperm motility and viability.
Bulbourethral (Cowper’s) Glands
Secretes lubricating mucus and neutralizes acidic urine in the urethra.
