The anus, in anatomy, is the external opening of the rectum. It is controlled by sphinctermuscles. Faeces are expelled from the body through the anus during the act of defecation, which is the primary function of the anus.
... African American, 0.18% Native American, 1.74% Asian, 0.01% Pacific Islander, 1.21% from other races, and 1.38% from two or more races. 7.06% of the population are ...