What is Corpus Cavernosum?
Two sausage-like blood filled tubes, the corpora cavernosum, form the erectile tissue of the penis. Each corpus cavernosum sits on either side of and above the urethra (urine tube) in the penis.
Hardening / Enlargement of Corpus Cavernosum:
When the penis becomes erect it is due to the corpora cavernosa becoming engorged with blood under pressure.
A small remnant of the corpora cavernosum is also found in a woman’s clitoris.