- nerve to sphincter ani
- a branch of the sacral plexus that innervates the sphincter ani muscle.
Medical dictionary. 2011.
nerve to sphincter ani
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Sphincter ani internus muscle — Muscle infobox Name = Sphincter ani internus muscle Latin = musculus sphincter ani internus GraySubject = 120 GrayPage = 426 Caption = Coronal section through the anal canal. B. Cavity of urinary bladder V.D. Ductus deferens. S.V. Seminal vesicle … Wikipedia
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sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… … Medical dictionary
Levator ani — Infobox Muscle Name = Levator ani Latin = musculus levator ani GraySubject = 119 GrayPage = 422 Caption = Left Levator ani from within. Caption2 = Coronal section through the anal canal. B. Cavity of urinary bladder V.D. Ductus deferens. S.V.… … Wikipedia
Sacral spinal nerve 4 — The sacral spinal nerve 4 (S4) is a spinal nerve of the sacral segment. [ [http://www.ama assn.org/ama/pub/category/7173.html American Medical Association] Nervous System Groups of Nerves] .It originates from the spinal column from below the 4th… … Wikipedia
Urethral sphincter — The term urethral sphincter refers to one of two muscles used to control the exit of urine in the urinary bladder through the urethra. The two muscles are the external urethral sphincter and the internal urethral sphincter. When either of these… … Wikipedia
Corrugator cutis ani muscle — Gray s subject #120 425 Origin Insertion … Wikipedia
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
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