SEMEN
CHAPTER 11
,PHYSIOLOGY
• Semen consists of four components
• Contributed separately by the
• Testes and epididymis
• Seminal vessels
• Prostate
• Bulbourethral glands
• Normal specimen must have all four components
,PHYSIOLOGY (CONT’D)
• Spermatozoa
• Produced in seminiferous tubules of testes
• Mature and stored in the epididymis
• Contribute 5% of volume
• Seminal vessels
• Majority of fluid (60%)
• Provide fructose for sperm metabolism
• Sperm are not motile without this fluid
, COMPOSITION OF SEMEN
• Spermatozoa 5%
• Seminal Fluid 60%–70%
• Prostate Fluid 20%–30%
• Bulbourethral Glands 5%
CHAPTER 11
,PHYSIOLOGY
• Semen consists of four components
• Contributed separately by the
• Testes and epididymis
• Seminal vessels
• Prostate
• Bulbourethral glands
• Normal specimen must have all four components
,PHYSIOLOGY (CONT’D)
• Spermatozoa
• Produced in seminiferous tubules of testes
• Mature and stored in the epididymis
• Contribute 5% of volume
• Seminal vessels
• Majority of fluid (60%)
• Provide fructose for sperm metabolism
• Sperm are not motile without this fluid
, COMPOSITION OF SEMEN
• Spermatozoa 5%
• Seminal Fluid 60%–70%
• Prostate Fluid 20%–30%
• Bulbourethral Glands 5%
