Transcript vastus medialis

vastus medialis
• ORIGIN- intertronchanteric line of femur;
medial aspect of linea aspera
• INSERTION- common quadriceps tendon into
patella, tibial tuberosity via patellar ligament
• ACTION- extends the calf at the knee
• BLOOD- muscular branches of profunda
femoris artery; saphenous branch of
descending genicular artery
• NERVE- femoral nerve, (L2), L3, 4
vastus medialis
iliacus
• ORIGIN- inner surface of upper iliac fossa;
anterior inferior iliac spine; anterior capsule
of hip joint
• INSERTION- iliopsas tendon to the lesser
trochanter of the femur; medial aspect of the
linea aspera
• ACTION- powerfully flexes the thigh at the
hip; external rotation of the femur
• BLOOD- iliolumbar artery; deep circumflex
iliac artery
• NERVE- femoral nerve, L2, 3, 4
iliacus
psoas major
• ORIGIN- vertebral bodies of T12-L4 and the
intervening intervertebral discs; transverse
processes of L1-L4
• INSERTION- iliopsoas tendon to the lesser
trochanter of the femur; medial aspect of the
linea aspera
• ACTION- flexes the thigh at the hip; external
rotation of the femur
• BLOOD- iliolumbar artery; lumbar artery;
subcostal artery
• NERVE- ventral rami, L1, 2, 3, 4
psoas major
pectineus
• ORIGIN- pictineal line of the pubis; superior
pubic ramus
• INSERTION- the pectineal line of the femur
• ACTION- flexes the thigh at the hip; adducts
thigh at the hip; medially rotates thigh at the
hip
• BLOOD- muscular branches of medial femoral
circumflex artery
• NERVE- A: femoral nerve, L3, 4 or B:
obturator nerve, L2, 3, 4 or A&B: femoral L3,
4 and accessory obturator L3, 4
pectineus
gastrocnemius
• ORIGIN- medial head: just above medial
condyle of femur; lateral head: just above
lateral condyle of femur
• INSERTION- calcaneus via lateral portion of
calcaneal tendon
• ACTION- plantarflexes the foot at the ankle;
flexes the calf at the knee; stablilizes ankle
and knee when standing
• BLOOD- sural branches of popliteal artery;
muscular branches of peroneal artery;
posterior tibial artery
• NERVE- tibial nerve, S1, 2
gastrocnemius