Major Muscles Hands and Arms Legs and Feet WRBCS204A Apply knowledge of nail science to nail services

Position Refers to where a muscle may be found in the body.

Origin Refers to where the muscle starts from and cannot move.

Insertion Refers to where a muscle ends or finishes. It cannot be moveable.

Action Refers to what a muscle does or the movement it performs

Major Muscles of the Hand and Arms Muscle Flexor Carpi Radialis Position Anterior Forearm Origin Humerus Insertion Front of the carpals Action Bends and flexes the wrist and forearm

Major Muscles of the Hand and Arms Muscle Brachioradialis Position Posterior forearm Origin Lateral side of the Humerus Insertion The wrist on the radial side Action Flexes the elbow

Major Muscles of the Hand and Arms Muscle Extensor Digitorum Position Posterior Hand Origin Lateral side of the Humerus Insertion Into the Metacarpals Action Extends the wrist and forearm

Major Muscles of the Hand and Arms Muscle Biceps Position Upper Arm Origin Scapula of shoulder girdle Insertion Proximal radius Action Flexes the elbow and raises the forearm

Major Muscles of the Hand and Arms Muscle Flexor Carpi Radialis BrachioradialisExtensor Digitorum Biceps Position Anterior ForearmPosterior Forearm Posterior HandUpper Arm Origin HumerusLateral side of the Humerus Scapula of shoulder girdle Insertion Front of the carpals The wrist on the radial side Into the Metacarpals Proximal radius Action Bends and flexes the wrist and forearm Flexes the elbow Extends the wrist and forearm Flexes the elbow and raises the forearm

Major Muscles of the Legs and Feet MuscleTibialis Anterior PositionFront of the Lower Leg OriginBelow the knee joint on the two bones of the lower leg (Tibia & Fibula) InsertionTarsal and Metatarsal bones inside the instep ActionRaises the foot towards the leg & inverts the foot

Major Muscles of the Legs and Feet MuscleGastrocnemius PositionForms the calf of the leg OriginAt the back of the thigh bone (Femur) InsertionAchilles Tendon ActionRaises the body as in walking, running and dancing

Major Muscles of the Legs and Feet MuscleSoleus PositionLies under the Gastrocnemius OriginAt the back of the thigh bone (Femur) InsertionAchilles Tendon ActionRaises the body as in walking, running and dancing

Major Muscles of the Legs and Feet MuscleTibialis Anterior GastrocnemiusSoleus Position Front of the Lower Leg Forms the calf of the leg Lies under the Gastrocnemius Origin Below the knee joint on the two bones of the lower leg (Tibia & Fibula) At the back of the thigh bone (Femur) Insertion Tarsal and Metatarsal bones inside the instep Achilles Tendon Action Raises the foot towards the leg & inverts the foot Raises the body as in walking, running and dancing