anal orifice

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, gen. and pl.


(ā'nŭs, -nī), [TA]
The lower opening of the digestive tract. It is associated with the anal sphincter and lies in the cleft between the buttocks, through which fecal matter is extruded.
Synonym(s): anal orifice
Farlex Partner Medical Dictionary © Farlex 2012


(or'i-fis) [L. orificium, outlet]
The mouth, entrance, or outlet of any anatomical structure. orificial (-fi'shal), adjective

anal orifice

The anus.

atrioventricular orifice

The opening between the atrium and the ventricle on each side of the heart.

cardiac orifice

The opening of the esophagus into the stomach.

external urethral orifice

The exterior opening of the urethra. In the male, it is located at the tip of the glans penis; in the female, it is located anterior and cephalad to the vaginal opening.

ileal orifice

Ileocecal valve.

internal urethral orifice

The opening from which the urethra makes its exit from the bladder.

mitral orifice

The opening between the left atrium and the left ventricle.

pyloric orifice


ureteric orifice

The opening of the ureter into the bladder.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The base of the cup was cephalad and the rim faced the anal orifice. The rim had a diameter of 7.5 cm and its edges were impacted in inflamed rectal mucosa.
A 9 years old, uncastrated male Labrador dog was presented with history of progressively growing hard bilobed swelling in perianal area of about 3.5" x 2" at dorsal aspect of anal orifice below the tail for 5 months (Fig.
The patency of the opening was maintained by application of five interrupted sutures by nonabsorbable black braided silk no.2 between mucous coat and skin to make a permanent anal orifice (Fig.