sphincter
(sfingk′tĕr)

[Gr. sphinktēr, tight band]
A circular muscle constricting an orifice. In normal tonic condition, it closes the orifice, i.e., the muscle must relax to allow the orifice to open.
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Citation
Venes, Donald, editor. "Sphincter." Taber's Medical Dictionary, 25th ed., F.A. Davis Company, 2025. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/all/ileocecal_sphincter.
Sphincter. In: Venes DD, ed. Taber's Medical Dictionary. F.A. Davis Company; 2025. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/all/ileocecal_sphincter. Accessed April 2, 2025.
Sphincter. (2025). In Venes, D. (Ed.), Taber's Medical Dictionary (25th ed.). F.A. Davis Company. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/all/ileocecal_sphincter
Sphincter [Internet]. In: Venes DD, editors. Taber's Medical Dictionary. F.A. Davis Company; 2025. [cited 2025 April 02]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/all/ileocecal_sphincter.
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