<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>
<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 corpora cavernosa and the corpus spongiosum are anatomic structures of the
the corpora cavernosa and the corpus spongiosum are anatomic structures of the
penis
penis