What Is Reproduction? Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. In the human reproductive process...
The Male Reproductive System Like other living things, human beings reproduce. It's what keeps the population going. ...
The Male Reproductive System The male and female reproductive systems work together to make a baby. Click through this slideshow to see how the male reproductive system works. ...
The Male Reproductive System The penis is made of two parts: the shaft (the main part) and the glans (the tip, sometimes called the head). The scrotum is a pouch-like structure that keeps the testicles at the right temperature. ...
The Male Reproductive System The two testicles (or testes) produce sperm and the male sex hormone testosterone. ...
The Male Reproductive System Next to each testicle, the epididymis is a tube where sperm is stored. From here, sperm are transported to the vas deferens. ...
The Male Reproductive System Also called the ductus deferens, the vas deferens is a thin muscular tube that transports the sperm from the epididymis to the urethra. ...
The Male Reproductive System The prostate gland is a walnut-sized gland that surrounds a portion of the urethra and produces some of the fluid in semen. ...
The Male Reproductive System Located at the base of the bladder, the two seminal vesicles secrete a thick fluid that nourishes the sperm. The bladder is the muscular sac that stores urine (pee) until it is released through the urethra. ...
The Male Reproductive System The urethra is the tube that carries semen and urine out of the penis. ...
The Male Reproductive System When the sperm and an egg meet in the female's reproductive system, the sperm fertilizes the egg, forming a zygote. The zygote becomes an embryo and then develops into a fetus. ...
The Male Reproductive System After about 40 weeks, a baby is born. All boys are born with a foreskin, a fold of skin at the end of the penis covering the glans. Some...