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.
The muscles of the pelvic floor and their fasciae from the.
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.
The pelvic floor is formed by the funnel shaped pelvic diaphragm.
The muscles of the pelvic floor contribute to maintaining continence and help prevent the contents of the pelvic cavity from falling through its outlet.
We shall now consider each of these components in more detail.
Levator ani muscles largest component.
Fasciae of the pelvic floor.
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.
Correspondingly the urogenital diaphragm is covered by a superior fascia and inferior fascia of the urogenital diaphragm.
The muscles of the pelvic diaphragm are covered by a fascia on the upside and a fascia on the underside.
The muscles of the pelvic floor are collectively referred to as the levator ani and coccygeus muscles.
When learning about the muscles of the pelvic floor it is important to keep in mind its funnel shaped structure.
The function of the pelvic diaphragm is to support the pelvic organs and prevent them from prolapse.
Origins of the levator ani pubococcygeus and the iliococcygeus the levatores ani muscles are formed from two distinct muscles.
The pelvic diaphragm comprises of the two paired muscles and their fasciae.
There are three main components of the pelvic floor.
Fascia coverings of the muscles.
The pelvic fasciae are the fascia of the pelvis and can be divided into.
These are the superior and inferior fasciae of the pelvic diaphragm.
They form a large sheet of skeletal muscle that is thicker in some areas than in others.
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.