<Tr> <Th> FMA </Th> <Td> 19618 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> 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 the penis 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 . </P> <P> The two corpora cavernosa and corpus spongiosum (also known as the corpus cavernosum urethrae in older texts and in the adjacent diagram) are three expandable erectile tissues along the length of the penis, which fill with blood during penile erection . The two corpora cavernosa lie along the penis shaft, from the pubic bones to the head of the penis, where they join . These formations are made of a sponge - like tissue containing trabeculae, irregular blood - filled spaces lined by endothelium and separated by connective tissue septa . </P>

The location of the corpora cavernosa is the