Thigh Muscles Flashcards
What is the origin of the iliopsoas?
L7 S14
Iluacus portion:
-alae of sacrum
Psoas major portion:
-lateral bodies and transverse processes of lumbar vertebrae
What is the insertion of the iliopsoas?
L7 S14
Lesser trochanter of femur
What are the actions of the iliopsoas?
L7 S15
- flexion and internal rotation of hip
- extension an lateral bending of lumbar vertebrae (psoas major portion)
What is the innervation of the iliopsoas?
L7 S15
Iliacus portion:
-femoral nerve
Psoas major portion:
-directly from L1-3
What is the origin of the sartorius?
L7 L16
ASIS
What is the insertion of the sartorius?
L7 S16
Upper, medial tibia
What is the action of the sartorius?
L7 S16
- flexion, abduction and external rotation of the hip
- flexion and internal rotation of the knee
What is the innervation of the sartorius?
L7 S16
Femoral nerve
What is the origin of the pectineus?
L7 S19
Pectineal line of pubis (superior ramus)
What is the insertion of the pectineus?
L7 S19
Upper half of pectineal line of femur
What is the action of the pectineus?
L7 S19
-flexion, adduction, and internal rotation of the hip
What is the innervation of the pectineus muslce?
L7 S19
Femoral nerve
What is the origin of the rectus femoris?
L7 S22
- AIIS
- posterosuperior rim of acetabulum
What is the insertion of the rectus femoris?
L7 S22
Tibial tuberosity (via patellar tendon)
What is the action of the rectus femoris?
L7 S22
- extension of the knee
- flexion of the hip
What is the innervation of the rectus femoris?
L7 S22
Femoral nerve
What is the origin of the vastus lateralis?
L7 S24
Intertrochanteric line, greater trochanter, gluteal tuberosity, upper lip of linea aspera, and lateral intermuscular septum
What is the insertion of the vastus lateralis?
L7 S24
Tibial tuberosity (via patellar tendon)
What is the action of the vastus lateralis?
L7 S24
Extension of the knee
What is the innervation of the vastus lateralis?
L7 S24
Femoral nerve
What is the origin of the vastus medialis?
Intertrochanteric line, greater trochanter medial lip of linea aspera, medial supracondylar line, and medial intermuscular septum
What is the insertion of the vastus medialis?
L7 S25
Tibial tuberosity (via patellar tendon)
What is the action of the vastus medialis?
L7 S25
Extension of knee
What is the innervation of the vastus medialis?
L7 S25
Femoral nerve
What is the insertion of the vastus intermedius?
L7 S26
Upper 2/3 of femoral shaft, distal half intermuscular septum, and lateral lip of linea aspera