Unlike the internal sphincter the external sphincter is composed of striated muscle fibres which are under the voluntary control of the somatic nervous system
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Unlike the internal sphincter the external sphincter is composed of striated muscle fibres which are under the voluntary control of the somatic nervous system. It is often called the '''urethralis''' muscle.
=====Somatic Motor Supply - External Urethral Sphincter=====
=====Somatic Motor Supply - External Urethral Sphincter=====