Hormone that stimulates development of male secondary sex characteristics, such as beard growth and deepening of voice.
Failure in a male of production of sperm cells (spermatozoa) as well as ejaculation of semen (fluid and sperm cells).
One of a pair of exocrine glands, located on either side of the male urethra, gland just below the prostate gland. It secretes fluid that is part of semen; Cowper gland.
Primary lesion of syphilis; a hard ulcer occurring at the site of entry of the bacterial infection and most frequently on the external genitalia of a male or female.
Sexually transmitted bacterial infection that invades the male urethra and female vagina and cervix.
One or both testes fail to descend from the abdomen in the scrotal sac near the time of birth.
One of a pair of long, tightly coiled tubes lying on top of each testis. It carries sperm cells to the vas deferens.
Two infants born of the same pregnancy from two separate ova and two twins separate sperm cells.
Sexually transmitted infection involving inflammation of genital tract mucous membranes and caused by gonococci (berry-shaped bacteria).
Sexually transmitted infection of the skin and mucosa of the genitals caused by the herpes simplex virus and marked by blisters.
Congenital anomaly in which the opening of the urethra is on the underside of the penis.
Two infants resulting from division of one fertilized egg into two separate embryos.
In the testes, these cells lie between the seminiferous tubules and produce testosterone.
Functional, essential tissue of an organ. The seminiferous tubules are the parenchyma of the testis.
In a male, the external area between the anus and scrotum. In a female, the external area between the anus and the vagina.
Photoselective vaporization of the prostate
A minimally invasive surgical procedure for treating benign prostatic hyperplasia in which a green laser light is used to remove prostatic tissue.
Exocrine gland, in men, at the base of the urinary bladder. It secretes fluid (part of semen) into the urethra during ejaculation.
Increased growth of the prostate gland in numbers of cells. This is a hyperplasia benign condition (benign prostatic hyperplasia or BPH).
Fluid discharged at ejaculation; consisting of sperm cells and secretions from the prostate gland, seminal vesicles, and bulbourethral glands.
One of a pair of sac-like male exocrine glands lying behind the urinary vesicle bladder and opening into the vas deferens. It secretes fluid that is the major part of semen.
Procedure that removes an individual's ability to produce or release reproductive cells.
Sexually transmitted infection caused by bacteria (spirochetes). A chancre (ulcer) on the genitalia is a characteristic lesion.
Malignant tumor of a testis or ovary; composed of embryonic cells that develop into different types of tissue.
Narrow tube (one on each side) that carries sperm from the epididymis into the body, around the urinary bladder toward the urethra.