ANUS

the external termination of the rectum, or opening of the lower end of | the alimentar y tract. The aperture is closed, except during the act of defecation, by the external and internal sphincter muscles. A congenital closure of the rectum by an imperforate A. is head|sometimes met with in infants, but can usually be remedied by a simple surgical | OPeration. Other affections of the part nibs spasm a the poe muscle, oaren OF ised a the A., a pruritus | 2%, Characterized by intense irritation. The usual treatment consists of strict attention to cleanline and the use of suitable ointment.