Anatomy Leg

Question 1

TFL;
Origin
Insertion
Function

Answer 1

Origin: Outer lip of anterior iliac crest, Anterior superior iliac spine (ASIS)

Insertion:Lateral condyle of tibia (via iliotibial tract)

Action: Hip joint: Thigh internal rotation, (Weak abduction); Knee joint: Leg external rotation, (Weak leg flexion/ extension); Stabilizes hip & knee joints

Question 2

Vastus Medialis;
Origin
Insertion
Function

Answer 2

Origin; medial side of femur
insertion; quadriceps tendon
Action; Extends knee

Question 3

Vastus Lateralis O, I, F

Answer 3

Origin; Greater trochanter, Intertrochanteric line, and Linea aspera of the Femur
Insertion; Patella by the Quadriceps tendon and Tibial tuberosity by the Patellar ligament
Action; Extends and stabilizes knee

Question 4

Vastus Intermedius O,I,F

Answer 4

Origin; Anterolateral femur
Insertion; Quadriceps tendon
Actions; Extension of knee joint

Question 5

Rectus Femoralis O, I, F

Answer 5

Origin: Anterior inferior iliac spine and a groove superior the acetabulum
Insertion: Common tendon of the quadriceps enclosing the patella and inserting on the tibial
Function; Extension of leg at knee joint, flexion of hip