Hormone that stimulates development of male secondary sex characteristics, such as beard growth and deepening of voice.
Congenital absence of one or both testes.
Failure in a male of production of sperm cells (spermatozoa) as well as ejaculation of semen (fluid and sperm cells).
Lack of live spermatozoa in the semen.
Inflammation of the glans penis.
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.
Removal of sex glands (gonads); ovaries or testes.
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.
Surgical removal of the foreskin (prepuce) surrounding the end of penis.
Use of extremely cold temperatures to freeze or destroy tissue.
One or both testes fail to descend from the abdomen in the scrotal sac near the time of birth.
Ejection of sperm and fluid from the male urethra as a result of sexual stimulation.
Tube through which semen enters the male urethra.
Malignant tumor of the testes.
One of a pair of long, tightly coiled tubes lying on top of each testis. It carries sperm cells to the vas deferens.
Inflammation of an epididymis.
Inability of an adult male to achieve an erection; impotence.
A male who is castrated before reaching puberty.
A flagellum is a hair-like projection on a sperm cell that makes it motile.
Two infants born of the same pregnancy from two separate ova and two twins separate sperm cells.
Sensitive tip (surrounded by foreskin) of the penis.
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.
Hernia (sac of clear, watery fluid) within the scrotum.
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.
Inability of an adult male to achieve an erection; erectile dysfunction.
In the testes, these cells lie between the seminiferous tubules and produce testosterone.
Tying off a tube or blood vessel. Thread or wire is used.
Scanty (less than the normal number of sperm in semen) sperm count.
Removal (excision) of a testis.
Surgical fixation of an undescended testis in the scrotum.
Inflammation of a testis.
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.
Narrowing (stricture) of the opening of the prepuce (foreskin) over the glans penis.
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.
Fold of skin covering the glans penis (tip of the penis); foreskin.
Removal (excision) of the prostate gland.
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).
Inflammation of the prostate gland.
Pus-filled; forming or containing pus.
Sac that contains the testes and associated organs.
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.
Narrow, coiled tubules that produce spermatozoa in the testes.
Malignant tumor within a testis.
Formation of sperm cells.
Single sperm cell.
Pertaining to destruction of sperm cells.
Procedure that removes an individual's ability to produce or release reproductive cells.
Supportive, connective tissue of an organ.
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.
Pertaining to a testis or testicle.
Twisting of the spermatic cord and blood vessels of the testes.
Male gonad that produces spermatozoa (sperm cells) and the hormone, testosterone.
Male hormone secreted by the interstitial cells of the testes.
Enlarged, dilated veins near a testicle.
Narrow tube (one on each side) that carries sperm from the epididymis into the body, around the urinary bladder toward the urethra.
Removing a piece of each vas deferens and tying off each end.
New opening (anastomosis) of the ends of a severed vas deferens. This surgical procedure reverses a vasectomy.