EXTERNAL ANAL SPHINCTER

 

Rotation Gallery

 

ORIGIN:  Subcutaneous: Surrounds the anus and placed below the skin. Superficial: Anococcygeal raphe. Deep: Fibers surrounds the anus and arise from the tip of coccyx.

 

INSERTION:  Subcutaneous- to skin. Superficial and deep -to central perineal tendon.

 

ACTION:  Closure of anus.

 

NERVE:  Perineal nerve, inferior rectal nerves and perineal branch of fourth sacral nerve.

Action animation

 

External anal sphincter is located to layer 2 of male perineum
 

 
DIGITAL LOCATOR OF EXTERNAL ANAL SPHINCTER: Layer 1 Layer of skin of male perineum. Layer 2 Layer of superficial fascia of male perineum. External anal sphincter is located to layer 2 of male perineum. Rollover mouse to label, click to display page. Click blinking end page to display External anal sphincter.

 

 

 

 

 

 

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