Pelvic Floor Muscles Flashcards
What are the two muscle groups for pelvic floor muscles?
1) pelvic diaphragm
2) perennial muscles
What are the muscles of the pelvic diaphragm?
1) levator ani
2) coccygeus
What are the structures that pass through the pelvic diaphragm in females?
1) urethra
2) vagnial canal
3) anal canal
O: Levator ani
inner surface of hip bone
I: Levator ani
1) muscle fibers of other side’s levator ani
2) sacrum and coccyx
F: Levator ani
supporting the weight of pelvic viscera
N: Levator ani
pudendal nerve and sacral spinal nerves
O: Coccygeus
ischial spine
I: Coccygeus
sacrum and coccyx
F: Coccygeus
supporting the weight of pelvic viscera
N: Coccygeus
anterior rami of spinal nerves
What are the muscles of the pelvic wall? (2)
1) piriformis
2) obturator internus
Where are perineal muscles contained?
Contained within the perineum
What is the primary function of the perineal muscles?
reinforce the pelvic diaphragm directly underneath the weak points of the pelvic diaphragm
What are the bony landmarks that make up the perineum?
1) coccyx
2) ischial tuberosities
3) pubic symphysis
What are the two triangles that make up the perineum?
1) urogenital
2) anal
What are the perineal muscles?
1) ischiocavernosus
2) bulbospongiosus
3) external anal sphincter
F: Ischiocavernosus
maintain erection of penis or clitoris
N: Ischiocavernosus
pudendal nerve
F: Bulbospongiosus
Males: help drain last drops of urine
Female: act as sphincter for vaginal opening
N: Bulbospongiosus
pudendal nerve
F: External anal sphincter
control passage of fecal matter
N: External anal sphincter
pudendal nerve
Which plexus is the pudendal nerve a branch of?
sacral plexus
