Muscle Action, Origin, Insertion, Nerve Flashcards
quads femoris group A (excluding rectus femoris additional A)
extend knee
rectus femoris additional A to quads group
flex hip
rectus femoris O
AIIS
vastus medialis O
medial lip of linea aspera
vastus lateralis O
intertrochanteric line, greater trochanter, lateral lip of linea aspera, gluteal tuberosity
vastus intermedius O
upper 2/3 of anterior and lateral surfaces of femur, lower part of lateral intermuscular septum
rectus femoris I
tibial tuberosity (via base of patella, then forms part of patellar ligament)
vastus intermedius I
tibial tuberosity (via the patella and patellar ligament)
vastus medialis I
medial border of patella and tibial tuberosity (via rectus femoris tendon into patellar ligament)
vastus lateralis I
lateral border of patella and tibial tuberosity (via rectus femoris tendon into patellar ligament)
nerve supplying the quads muscle group
femoral
piriformis A
laterally rotates hip; abducts flexed hip (flexed??)
piriformis O
anterior surface of the 2nd to 4th sacral segments
piriformis I
superior aspect of greater trochanter
quadratus femoris A
laterally rotates hip
quadrats femoris O
lateral border of ischial tuberosity
quadratus femoris I
intertrochanteric crest
obturator internus A
laterally rotates hip
obturator internus O
obturator membrane and inferior surface of obturator foramen
obturator internus I
medial surface of greater trochanter
obturator externus A
laterally rotates hip
obturator externus O
rami of pubis and ischium, obturator membrane
obturator externus I
trochanteric fossa of femur
gemellus superior A
laterally rotate hip
gemellus superior O
gluteal surface of ischial spine
gemellus superior I
medial surface of greater trochanter (with obturator internus tendon??)
gemellus inferior A
laterally rotate hip
gemellus inferior O
upper part of the ischial tuberosity
gemellus inferior I
medial surface of greater trochanter (with obturator internus tendon)
biceps femoris A
flexes knee; laterally rotates tibia on femur; tilt pelvis posteriorly; long head extends hip; long head laterally rotates hip