What is the male reproductive organ?

The male reproductive organ may appear much smaller than other organs in the body, but in fact it is far more intricate. The organ sits between a man's legs like a sac and changes its shape with the movement of temperature. The structure consists of both external and internal parts. Apart from creating sperm and allowing the process of sexual contact, the reproductive organ is also responsible for puberty and growth of the man.

As you can see, the organ itself consists of coils of vessels, nerves and bones. The main penis and scrotum are visible from the outside while  the bladder, prostate glands and the vas deferens are internal and cannot been seen. 

The male sex cell is sperm and is produced in the testis before being stored in the epididymis to mature.

The fact that the penis is responsible for urination, sexual contact and the production of the hormone- testosterone, it is essential that the organ is kept at a healthy state as any infection of the organ may spell a disaster and cause not only pain but infertility. 

Roles of the parts of the penis are listed below:


The bladder is a hollow, muscular, balloon-shaped  organ that sits in the pelvis. The main role of the bladder is to store urine from the kidneys until it is full enough to be empties through the urethra.When empty, the bladder deflates and inflates when the bladder is filling up just like a balloon. Although the bladder is much stronger than a balloon as medically, the case of bladder of 'popping' bladders is unheard of. The nerves in the bladder is responsible for notifying when to release urine. When urinating, the brain receives a message to tighten the bladder thus forcing the urine out of the bladder. Some diseases of the bladder are: bladder cancer, bed-wetting, urinary incontinence, urinary retention and retrograde ejaculation.

Sperm Duct

More commonly known as 'vas deferens' sperm ducts are tubes that connects the testes to the urethra thus allowing sperm and semen the mix and therefore ejaculation. The sperm duct is a vital part of the male reproductive organ as it is responsible for carrying the sperm out of the testes to produce semen. Any defects or inflammation of the sperm duct may result in sterility or impotence (difficulty in having an ejaculation)


Often confused with 'urethra,' ureters are tubes that connects the kidney to the bladder. Its main function is to deliver urine from the kidney to the bladder allowing urination. Any blockages in the tubes will result in kidney infection which may lead to kidney failure. A common disease of the urethra is kidney stones. It not only causes severe pain but also tears the ureter (internal lining) which may result in complications.

Prostate gland

 The prostate gland is a walnut-sized gland/ organ located immediately below the bladder, and in front of the rectum. It encircles the upper part of the urethra and is only present in males. The prostate is an essential part of the reproductive system as it provides nutrients for the sperm to be able to swim properly and survive. The main function of the gland is to store seminal fluid, a milky fluid. The prostate also regulate bladder control and sexual functions such as ejaculations. Some diseases affecting the prostate gland are: prostatitis, enlarged prostate and prostate cancer. Prostate cancer is the most common reproductive cancers in men and it is the second largest killer after lung cancer.

CLICK HERE to read more on the diseases page.


What looks like a rod is much more complicated than one may think. The whole penis consists of five major parts. The glans, corpus cavernosum, corpus spongiosum, foreskin and the urethra. The glans is the head of the penis usually pink in colour and moist. In the case of circumcised men, the glans is a dark, dry skin. The corpus cavernosum is the large bulk of the penis. It is the two columns of tissue that runs along the two sides of the penis. When blood is increased around the area, the result is erection. Corpus spongiosum is a column of sponge-like tissue that runs along the front of the penis. It fills with blood during an erection and thus keeping the urethra opened. Lastly and most importantly, is the urethra. The urethra is a tube running from the bladder to the head of the penis. Its main role is to deliver urine and semen out of the body. The overall function of the penis is to urinate and allowing sexual intercourse.  Some diseases involving the penis are: erectile dysfunction, priapism,  cancer of the penis and balanitis.


The epididymis is a long, coiled tube that rests on the backside of each testicle. It functions in the transport and storage of the sperm cells that are produced in the testes. It also is the job of the epididymis to bring the sperm to maturity, since the sperm that emerge from the testes are immature and incapable of fertilization. During sexual arousal, contractions force the sperm into the vas deferens.


The testes are oval organs about the size of large olives that lie in the scrotum, secured at either end by a structure called the spermatic cord. Most men have two testes. The testes are responsible for making testosterone, the primary male sex hormone, and for generating sperm. Within the testes are coiled masses of tubes called seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis.

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