The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.

The walnut-shaped gland called the prostate wraps around the urethra, the passageway through which urine flows. The prostate is part of the male reproductive system. One of its main jobs in the male reproductive system is to add fluid to sperm. This is the volume of fluid containing sperm.