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Definition: What is the purpose of the urethra?

The urethra is a tube-like structure that plays a crucial role in the urinary system of both males and females. It serves as a passageway for urine to exit the body from the bladder. In males, the urethra also has the additional function of transporting semen during ejaculation.

Male Urethra

In males, the urethra is longer and more complex compared to females. It extends from the bladder, passing through the prostate gland and the penis. The male urethra has three main sections:

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1. Prostatic urethra: This is the initial part of the urethra that passes through the prostate gland. It receives secretions from the prostate, which contribute to the composition of semen.

2. Membranous urethra: This section of the urethra is a short segment that passes through the pelvic floor muscles. It is the narrowest part of the male urethra.

3. Penile (spongy) urethra: This is the longest part of the male urethra, extending through the length of the penis. It runs within the corpus spongiosum, a spongy tissue that surrounds the urethra. During ejaculation, semen is expelled through this part of the urethra.

Female Urethra

In females, the urethra is shorter and straighter compared to males. It extends from the bladder and opens just above the vaginal opening. The female urethra is primarily responsible for the elimination of urine from the body.

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Function of the Urethra

The main purpose of the urethra is to transport urine from the bladder to the outside of the body. It acts as a conduit for the elimination of waste products and excess fluids from the urinary system. The urethra also plays a vital role in maintaining the body’s fluid balance and regulating blood pressure.

In males, the urethra has an additional function of transporting semen during ejaculation. Semen, which contains sperm and other fluids, is expelled through the male urethra during sexual intercourse.

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Overall, the urethra is an essential component of the urinary and reproductive systems, ensuring the proper elimination of waste and facilitating reproduction in males.

Keywords: urethra, through, bladder, during, urinary, females, function, ejaculation, prostate