THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The corpus cavernosa and the corpus spongiosum make reproduction possible. The blood that fills these spongy tissues makes your penis hard enough to penetrate the vagina during sexual intercourse.

Detailed explanation-2: -Corpora Cavernosa The penile erectile tissue, specifically the cavernous smooth musculature and the smooth muscles of the arteriolar and arterial walls, plays a key role in the erectile process.

Detailed explanation-3: -The cause of an erection is arousal, which stimulates the release of nitric oxide from nerve terminals and blood vessels. That increases the amount of blood that flows into the erectile tissue. As the erectile tissue fills with blood, the veins that drain the blood out of the penis collapse.

Detailed explanation-4: -The three groups of tissues, the two cavernosa and the spongiosum, are expandable, sponge-like structures involved in the process of a penile erection.