Musc Sys - Origin, Insertion, Action - Lower - Adv A & P

Front

What is the action of the vastus lateralis?

Back

Extends leg at knee.

Front

What action does the rectus femoris control?

Back

Extends leg at knee; flexes thigh at hip.

Front

What action do these muscles control: flexes leg at knee; extends thigh at hip?

Back

Flexes leg at knee; extends thigh at hip.

Front

What is the action of the extensor digitorum longus muscle?

Back

Dorsiflexion of foot, extension of four lateral toes.

Front

What is the insertion of the vastus lateralis muscle?

Back

Patella, by the tendon.

Front

What is the origin of the rectus femoris muscle?

Back

Anterior inferior iliac spine (AIIS) and superior margin of the acetabulum.

Front

What is the action of the biceps femoris muscle?

Back

Flexes leg at knee; extends thigh at hip.

Front

What is the insertion of the biceps femoris muscle?

Back

Head of fibula and lateral condyle of tibia.

Front

What is the action of the gastrocnemius muscle?

Back

Plantar flexion of foot; flexes leg at knee.

Front

What is the origin of the gastrocnemius muscle?

Back

Medial and lateral condyles of femur.