To hear audio pronunciation of this topic, purchase a subscription or log in.
[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.
There's more to see -- the rest of this topic is available only to subscribers.
Venes, Donald, editor. "Sphincter." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/4/sphincter.
Sphincter. In: Venes DD, ed. Taber's Medical Dictionary. F.A. Davis Company; 2021. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/4/sphincter. Accessed June 1, 2023.
Sphincter. (2021). In Venes, D. (Ed.), Taber's Medical Dictionary (24th ed.). F.A. Davis Company. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/4/sphincter
Sphincter [Internet]. In: Venes DD, editors. Taber's Medical Dictionary. F.A. Davis Company; 2021. [cited 2023 June 01]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/4/sphincter.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - sphincter ID - 744281 ED - Venes,Donald, BT - Taber's Medical Dictionary UR - https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/744281/4/sphincter PB - F.A. Davis Company ET - 24 DB - Nursing Central DP - Unbound Medicine ER -