Pelvic Floor Flashcards
The pelvic floor is a part of the _______
Pelvic diaphragm
Superior surface of the pelvic diaphragm is covered with
Endopelvic fascia
Muscles in the pelvic floor
Levator ani
Coccygeus
Separates pelvis from perineum
Pelvic floor
Funnel shaped muscular ring
Pelvic floor
The _______ is superficial (inferior) to the pelvic diaphragm (pelvic floor)
Perineum
The perineum is Diamond shape from the __________ to the coccyx.
pubic symphysis to ischial
tuberosities
2 triangles of the perineum
Urogenital
Anal
The _________ is the inferior support of the abdominal cavity supporting all organs and abdominal pressure
Pelvic floor
Fundamentally same in males and females
Pelvic floor
Levator ani muscle group
Puborectalis
Pubococcygeus
Iliococcygeus
Body of the pubis
bilaterally as it wraps around the rectum (connecting at the anococcygeal ligament
Puborectalis
Pubis and obturator
foramen fascia bilaterally (connecting at the
anococcygeal ligament posteriorly).
• Lateral to puborectalis
Pubococcygeus
Pubis and obturator
foramen fascia bilaterally (connecting at the
anococcygeal ligament posteriorly).
• Lateral to puborectalis
Illiococcygeus
Innervation for Levator ani
S3-s4 ventral rami
–intra-abdominal pressure
resistance, fecal continence, prevent
prolapse, and occludes vagina.
• Supports the viscera, active during inspiration,
and can contract to aid intra-abdominal
stability.
Contraction Levator ani
urine excretion, fecal
defecation, and directs fetal head
during parturition.
Relaxation Levator ani
Attachment of coccygeus
Ischial spine to the coccyx
Innervation of coccygeus
Ventral rami of s3-s4
Small part of pelvic
support, elevates pelvic floor,
and flexes the coccyx (tail
wagger).
Action of the coccygeus
• Origin: Internal surface of obturator foramen
• Insertion: Greater trochanter of femur
• Innervation: N. to Obturator Internus
• Action: External (lateral) rotation, femoral
head stability.
Obturator internus