internal sphincter muscle of anus
n.
A smooth muscle ring formed by an increase of the circular fibers of the rectum, situated at the upper end of the anal canal.
Words nearby internal sphincter muscle of anus
internal revenue,
internal revenue service,
internal rhyme,
internal secretion,
internal spermatic artery,
internal sphincter muscle of anus,
internal stress,
internal thoracic vein,
internal traction,
internal urethral opening,
internal version