The penis is made of several parts: More blood flows in and less flows out of the penis, hardening the tissue in the corpus cavernosum.
The brain has an automatic penis maintenance function built in. Impulses from the brain cause erections during the dreaming phase of sleep.
The human penis is an external male intromittent organ that additionally serves as the urinal The body of the penis is made up of three columns of tissue: two corpora cavernosa on the dorsal side and corpus spongiosum between them on .
Your penis is made of 3 layers of spongy tissue. When you get turned on, blood fills these tissues. This makes your penis get harder and stand up, which is also.
From penile spines to the ideal size, here are 7 wild facts about the male sex The foreskin's inner surface is made up of mucous membranes.