The muscles of the pelvic floor contribute to maintaining continence and help prevent the contents of the pelvic cavity from falling through its outlet.
The muscles of the pelvic floor and their fasciae from the.
95 is the largest and most important muscle of the pelvic floor.
It arises from the posterior aspect of the body of the pubic bone the fascia of the side wall of the pelvis covering obturator internus and the spine of the ischium.
There are three main components of the pelvic floor.
The muscles of the pelvic diaphragm are covered by a fascia on the upside and a fascia on the underside.
The floor of the pelvic cavity is formed by three layers of muscles and fasciae that span the pelvic outlet and support the viscera table 10 8.
The function of the pelvic diaphragm is to support the pelvic organs and prevent them from prolapse.
The pelvic floor is formed by the funnel shaped pelvic diaphragm.
The inner wall of the pelvis from the pubis to the spine of the ischium.
Levator ani muscle and the coccygeus muscle.
We shall now consider each of these components in more detail.
Origins of the levator ani pubococcygeus and the iliococcygeus the levatores ani muscles are formed from two distinct muscles.
Fasciae of the pelvic floor.
Fascia coverings of the muscles.
The pelvic diaphragm comprises of the two paired muscles and their fasciae.
The muscles of the pelvic floor are collectively referred to as the levator ani and coccygeus muscles.
It is penetrated by the anal canal urethra and vagina which open into a diamond shaped region between the thighs called the perineum perr ih nee um.
When learning about the muscles of the pelvic floor it is important to keep in mind its funnel shaped structure.
A the fascial sheaths of the obturator internus muscle fascia of the obturator internus the piriformis muscle fascia of the piriformis the pelvic floor b fascia associated with the organs of the pelvis.
Levator ani muscles largest component.
Correspondingly the urogenital diaphragm is covered by a superior fascia and inferior fascia of the urogenital diaphragm.