PFM D.png
 
 

Now to the deep layer. Its super supportive, broad and fan like.

 
This is a schematic of the female pelvic floor.  View from Above (looking down, from the diaphragm into the pelvic outlet)  The blue circles represent (from top to bottom), the anus, the vaginal opening and the urethra.

This is a schematic of the female pelvic floor.

View from Above (looking down, from the diaphragm into the pelvic outlet)

The blue circles represent (from top to bottom), the anus, the vaginal opening and the urethra.

 
 

Levator Ani is a general term for a collection of muscles that make up much of the third layer. It includes:

Puborectalis

  • Originating from the pubic bone

  • Inserting in a loop around the rectum

  • It moves the rectum forward, increasing the anorectal angle (helping poop stay in), and draws the rectum up into the pelvis

  • Innervation from pudendal nerve (S2-4) and direct sacral nerves from S3 and S4

Pubovaginalis (Women)

  • Originating from the pubic bone

  • Inserting in a loop around the vaginal canal

  • It supports the pelvic organs

  • Innervation from pudendal nerve (S2-4) and direct sacral nerves from S3 and S4

Pubococcygeus

  • Originating from the pubic bone

  • Inserting at the coccyx

  • It supports the pelvic organs

  • Innervation from pudendal nerve (S2-4) and direct sacral nerves from S3 and S4

Iliococcygeus

  • Originating from the ischial spine and the fascia of the obturator internus

  • Inserting at the anococcygeal ligament and the coccyx

  • It supports the pelvic organs

  • Innervation from pudendal nerve (S2-4) and direct sacral nerves from S3 and S4

Coccygeus is the other deep layer pelvic floor muscle.

  • Originates from the ischial spine and the sacrospinous ligament

  • Inserts into the lateral border of the bottom of the sacrum and the upper aspect of the coccyx

  • It supports the pelvic organs, pulls the coccyx forward when working bilaterally, and can side bend the coccyx if working unilaterally

  • Innervation from sacral nerves S3 and S4

Female Pelvic Floor Diagram - Deep Layer

Female Pelvic Floor Diagram - Deep Layer

Male Pelvic Floor Diagram - Deep Layer

Male Pelvic Floor Diagram - Deep Layer

 
 

Pelvic Floor Layers, Side View

 
 

Pelvic Floor Layers, View from Above (looking down, from the diaphragm into the pelvic outlet)

 
 

Pelvic Floor Layers, View from Below (looking up at the pelvic floor, from between the legs)

 
Kate Bailey