Lecture 11 Flashcards
The false pelvis muscles are actually
Abdominal muscles but extend down into the pelvis as well
Example of false pelvis muscles (4)
Iliopsoas muscle
Psoas muscle
Iliacus
Rectus abdominus
The psoas major joins the iliacus muscle at the ________ level to make the _____
Iliac crest level
Iliopsoas muscle
Iliopsoas muscle course _____ along the _____
Anteriorly
Linea terminalis
The iliopsaos muscle travels over
The pelvic brim
The iliopsaos muscle inserts onto
The lesser trochanter of the femur
Most anterior muscle of the pelvic avity
Rectus abdominus
Rectus abdominus is ____ to the linea alba
Bilateral
Rectus abdomins ascends from _______ to ________
Pubis, to xiphoid
The ___________ layer is the deepest most internal muscle layer
True pelvic muscle layer
3 whole true pelvis muscles
Obturator interus
Pelvic diaphragm
Piriformis
Obtuator internus and piriformis muscles cover ____________
Cover the true pelvic wall
Obturator internus is ____ shaped
Fan
Obturator internus cover __________ wall of ______
Anterolateral wall of true pelvis
Obturator internus originates on
Inferior aspect of obturator foramen
Describe the path of the Obturator internus
Cross the obturator foramen and leaves the pelvis through lesser sciatic notch, then turns to insert
Obturator internus inserts where
On medial surface of the greater trochanter
Obturator internus dos what movement
Rotates the thigh
Piriformis muscle is located _______
Posteriorly
Piriformis muscle originates on _____- surface of the ______
Anterior surface of the sacrum
Describe the path of the Piriformis muscle
Leave sacrum, passes through greater sciatic notch to insert
Piriformis muscle insertion
Great trochanter of femur
Action of the Piriformis muscle
Rotation and abduction of the thigh
Pelvic outlet muscles aka
Inferior pelvic aperture