Internal sphincter — Free Physiology Illustration | GPAI | GPAI

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Internal sphincter — Free Physiology Illustration | GPAI | GPAI

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Internal sphincter

Internal sphincter

Physiology

Internal sphincter

A compact circular band of smooth, nonstriated muscle at the bladder outlet forming the bladder neck sphincter, shown as a slightly thickened soft pink to pink-red ring-like constricting collar around the proximal urethral passage.

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PNG

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