Identify the paired structure within a cross-section of the penis.

A) Corpora cavernosa
B) Corpus spongiosum
C) Urethra
D) Lumen

Corpora Cavernosa

Two parallel chambers of spongy tissue in the penis or clitoris that fill with blood during sexual arousal, leading to erection.

Corpus Spongiosum

A spongy tissue surrounding the urethra that becomes engorged with blood during an erection, preventing the urethra from pinching closed.

Urethra

A tube that carries urine from the bladder to be expelled out of the body in both males and females, and also conveys semen in males.