The prostate is a walnut-sized and shaped muscular accessory sex gland.
Functions
The prostate secretes prostatic fluid into the semen and helps forcefully press it into the urethra so it could be expelled during ejaculation.
The fluid contains:
- Proteolytic enzymes
- Prostatic acid-phosphatase
- Prostate-specific antigen (PSA)
Location
The prostate is located just inferior to the bladder and anterior to the rectum, engulfing the prostatic urethra.
Connections and internal anatomy
- The superior pole of the prostate communicates with the urethra, allowing the flow of urine.
- During excitement (erection), the prostate swells up, blocking the passage of urine (but