Corpus cavernosum penis
A corpus cavernosum penis (singular) (cavernous body of the penis) is one of a pair of sponge-like regions of erectile tissue, the corpora cavernosa (plural) (cavernous bodies), which contain most of the blood in thepenis during an erection. Such a corpus is homologous to the corpus cavernosum clitoridis in the female; the body of the clitoris contains erectile tissue in a pair of corpora cavernosa (literally "cave-like bodies") with a recognisably similar structure.
Corpus Cavernosa is the pair of flacid flesh tissue that contains most of the blood in the penis during penile erection. These tissues lie along the penis shaft, from the pubic bones to the head of the penis, where they join.