The function of the penis is to deliver semen into the vagina during sexual intercourse.
In human males, the scrotum is a protuberance of skin and muscle or pouch containing the testicles.
Osteoarthritis OA is divided into five stages, spanning a normal and healthy knee to one that's severely damaged.
Maintaining the erectile state is key to the reproductive system and life itself could not reproduce in a natural way with out this ability.
These organs work together to produce sperm, the male gamete, and the other components of semen.
These epithelial cells contain many stem cells that divide and form sperm cells through the process of spermatogenesis.
The prostate also contains smooth muscle tissue that can constrict to prevent the flow of urine or semen.
It depends on a complex interaction of psychological, neural, vascular and endocrine factors.
Next Post Female genitals.
Penis of the human male.
Dopamine is an important chemical messenger involved in reward, motivation, memory, attention and even regulating body movements.
There's no cure for Alzheimer's, but there….