Dictionary

orchiopathy Any and all diseases of the testes.

orchiopexy Surgery to bring an undescended testicle down into the scrotum.

orchitis Inflammation of the testis. Causes of orchitis include mumps and other infections; diseases, such as polyarteritis nodosa; and injury.

organ A relatively independent part of the body that carries out one or more special functions. Examples of organs include the eyes, ears, heart, lungs, and liver.

organic 1 A chemical compound that contains carbon. 2 Related to an organ. 3 Grown or prepared without the use of chemicals or pesticides, as in organic food.

organic brain syndrome Psychiatric or neurological symptoms that arise from damage to or disease in the brain. Also known as organic mental disorder.

organotherapy The use of extracts of animal glands or organs to treat disease. Pituitary extracts from pigs, for example, were used for many years to treat hormone disorders.

organs of reproduction, female See female organs of reproduction.

organs of reproduction, male See male organs of reproduction.

orgasm A series of muscle contractions in the genital region that is accompanied by sudden release of endorphins. Orgasm normally accompanies male ejaculation as a result of sexual stimulation, and it also occurs in females as a result of sexual stimulation.

orifice An opening. For example, the mouth is an orifice.

oromandibular dystonia A condition characterized by forceful contractions of the muscles of the jaw, lips, and tongue. The jaw may be pulled open or shut, and speech and swallowing can be difficult. Local injections of botulism toxin (Brand name: Botox) have been used as a treatment.