Pelvic Anatomy 3 Flashcards
Describe how the pelvic diaphragm differs from the urogenital diaphragm.
1
Q
What is the pelvic diaphragm?
A
The muscular pelvic floor (body wall) closing off the pelvic outlet.
2
Q
What is the urogenital diaphragm?
A
Mainly fascial, closing off the UG triangle to give extra support anteriorly.
3
Q
What is the perineal body.
A
- Central tendong of the perineum
- Both pelvic and urogenital diaphragms attach here
4
Q
What muscles make up the pelvic diaphragm?
A
- Levator ani
- Pubococcygeus
- Iliococcygeus
- Ischiococcygeus
- Pubococcygeal “slings”:
- pubovaginalis
- levator prostatae
- puborectalis
5
Q
What are the attachments of the pelvic diaphragm?
A
- Central tendon
- Anococcygeal raphe
6
Q
What is the physiological function of the pelvic diaphragm? What happens when it weakens?
A
- Continence and support
- Prolapse results with weakening of the pubococcygeus, the strongest muscle
- uterus or other organs through vagina
7
Q
What is the innervation of the pelvic diaphragm?
A
- Pudendal nerve from below
- Direct branches from S3,4 above
