The reproductive system of both males and females are specialized in function and that they only work with the specific gender they are given to. While the female reproductive system is more complex as it houses the environment a fertilized egg will grow into, the male reproductive system is in no way a simple one as well. Perhaps, the most visible difference of the male reproductive system to that of the females is that the male have an external protruding structure. This external structure is situated outside of the body and consists of the penis, the testicles, and the scrotum.
The penis is possibly the most notable of all parts of the male reproductive system as it is the organ that is used for sexual intercourse. The penis comprises of three main portions – the root, body, and glans. The root is basically what attaches the penis to the abdomen; the shaft is the main span of the penis when erect; and the glans is the head or helmet of the penis located at the tip of the shaft. The glans contains a good number of nerve endings and is normally enclosed with a very loose skin which is often removed during circumcision. The glans contains an opening at the topmost portion which is the opening of the tube called urethra. This tube is responsible for the transport of both semen and urine. When a man reaches sexual climax, semen will be expelled via this tube.
The interesting part about the urethra is that neither sperm nor urine get mixed up despite being dispensed off by the same tube. This is because when the penis is erect, urine will not be able to pass through. Oppositely, when the penis is limp, semen will not be able to pass going out.
The main body of the penis is the one that gives the penis its length. It is cylindrical in shape and contains three chambers inside it. These chambers are made of sponge-like tissues with large spaces in between so that when it is filled with blood during sexual arousal, the penis becomes hard and erect to give it strength for vaginal penetration in sexual intercourse. On the other hand, the skin surrounding the body of the penis is both somewhat loose and pliable, allowing it to accommodate the changes in size of the penis during flaccid and erection state.
The scrotum is basically the loose sac of skin hanging at the bottom part of the shaft. Within these loose sacs of skin are the testicles, nerves, and blood vessels. The main function of the scrotum is to protect the testicles cold and heat – acting sort of like a climate control. When the body is hot, the scrotum is loose and dangling. If the temperature is cold, the scrotum is tight up near the base of the shaft. The reason for this is that the sperm can only develop under certain temperature, mainly cooler than that of the body’s temperature.
The testicles are oval in shape and are like large olives in size. Both testicles are enclosed by the scrotum with both structure connected to a spermatic cord. The testicles produce both testosterone and sperm. Although it is said that the testes produces sperm, it is in fact the seminiferous tubules located within the testes that generates sperms via the process of spermatogenesis.