Urethral Function in Rats: Male vs. Female - A Detailed Explanation

In males:

- The urethra serves as a shared pathway for the passage of both urine and semen.

- It begins at the neck of the bladder and extends through the penis, terminating at the external urethral orifice.

- During urination, the urethra allows for the controlled release of urine from the bladder to the outside.

- During sexual arousal and ejaculation, the urethra becomes narrower to prevent urine reflux and semen leaks, allowing for efficient semen delivery to the female reproductive tract.

In females:

- The urethra is solely responsible for the passage of urine from the bladder to the outside environment.

- It is shorter and wider compared to the male urethra and does not have dual functions.

- The female urethra opens separately below the clitoris, contributing to the female urogenital system.