Penile Urethra Traverses through Corpus Spongiosum
The penile urethra is the tube that carries urine and semen through the penis. It passes through different structures in the penis, including the corpora cavernosa and the corpus spongiosum. However, it specifically traverses through the corpus spongiosum.
Here is a detailed explanation of why the answer is B – Corpus Spongiosum:
- Corpora cavernosa: These are two chambers of erectile tissue that run along the upper side of the penis. They are responsible for the rigidity and erection of the penis but do not contain the penile urethra.
- Corpus callosum: The corpus callosum is a structure in the brain that connects the left and right cerebral hemispheres. It is not located in the penis and is not involved in the passage of the penile urethra.
- Corpus striatum: The corpus striatum is a part of the basal ganglia in the brain and is not related to the penile urethra.
- Corpus spongiosum: This is a column of erectile tissue that surrounds the penile urethra. It extends from the base of the penis to the glans (head) of the penis. The penile urethra traverses through the corpus spongiosum, allowing the passage of urine and semen during ejaculation.
In summary, the penile urethra passes through the corpus spongiosum, which is a column of erectile tissue that surrounds it. This arrangement ensures proper functioning and the passage of urine and semen through the penis.