Muscle Lab 5 Insertion, Origin, Action (2) Flashcards
Semimembranosus
O - ischium
I - patella and tibia
A - extend thigh; flex knee
Adductor femurs and adductor longus
O - pubis and ischium
I - femur
A - adduct thigh
Vastus Medialis/Lateralis
O - illium
I - patella and tibia
A - extend leg/knee
Rectus femoris
O - illium
I - patella and tibia
A - extend leg/knee
Pectineus
O - pubis
I - femur
A - flex hip; adduct thigh
Illiopsoas ***
O - last thoracic and lumbar vertebrae
I - femur
A - flex hip; adduct thigh
Popliteus
O - lateral condyle of femur
I - tibia
A - flex knee/ leg
Flexor digitorum longus
O - tibia and fibula
I - phalanges
A - flexes digits
External oblique
O - caudal ribs and lumbodorsal fascia
I - linea alba
A - compress abdomen; flex trunk
Internal oblique
O - illium and lumbodorsal fascia
I - linea alba
A - compress abdomen; flex trunk
Transverse abdominus
O - illium, lumbar vertebrae and caudal ribs
I - linea alba
A - compress abdomen; flex trunk
Rectus abdominus
O - pubis
I - sternum, 1st + 2nd costal cartilages
A - compress abdomen; flex trunk
External intercostal
O - rib n
I - rib n + 1
A - raise ribcage
Internal intercostal
O - rib n
I - rib - 1
A - depress ribcage
