Muscle Monday Sternocleidomastoid Location Neck Movement Neck Flexion

Muscle Monday

Sternocleidomastoid Location – • Neck Movement – • Neck Flexion and rotation

Pectoralis Major Location – • Chest Movement – • Internal Rotation • Shoulder Horizontal Adduction

Pectoralis Minor Location – • Chest Movement – • Scapula Depression

Biceps Brachii Location • Anterior upper arm Movement – • Elbow Flexion • Forearm Supination

Triceps Brachii Location – • Back of the arm Movement – • Elbow Extension

Gluteus Maximus Location – • Butt • Backside Movement – • Hip extension. • Hip external rotation. • Hip abduction.

Supraspinatus Location – • Top of the shoulder • On the scapula Movement – • Shoulder abduction • External Rotation Extra Part of the rotator cuff. • Stabilizes the humeral head in the glenoid fossa. • Action is controversial.

Infraspinatus Location – • Scapula • Back Movement – • External rotation • Helps to hold head of humerus in gleniod cavity. • Stabilizing shoulder joint Extra Part of Rotator Cuff.

Teres Minor Location – • Back • Inferior scapula Movement – • Shoulder External Rotation. • Helps hold humeral head in glenoid cavity.

Subscapularis Location – • Inside of the scapula Movement – • Shoulder Internal Rotation • Shoulder Adduction

Trapezius Location • Upper Back Movement – • Raises (elevates) shoulder

Latissimus Dorsi Location – • Inferior back Movement – • Shoulder Adduction • Shoulder Extension • Shoulder Internal rotation

Brachialis Location – • Proximal to the elbow in supination. Movement – • Elbow flexion

Anterior Deltoid Location – • Superior and anterior aspect of the shoulder. Movement – • Shoulder Flexion • Shoulder Internal rotation

Rectus Femoris Location • Middle, Front Thigh Movement – • Knee Extension • Hip Flexion

Gluteus Medius Location • Back side. • Buttocks Movement • Hip extension • Hip Abduction Extras Important in walking • Muscle of limb planted on ground tilts or holds pelvis in abduction so that pelvis on side of swinging limb does not sag. • The foot of swinging limb can thus clear the ground.

Serratus Anterior Location – • Side of the rib cage Movement – • Scapular protraction

Anterior Tibialis Location – • Front of lower leg Movement – • Dorsiflexion of ankle. Extra Muscle associated with shin splints.

Gracilis Location – • Inside of the thigh. Movement – • Hip adduction, flexion, and internal rotation.

Brachioradialis Location – • Front of forearm. Movement – • Elbow Flexion • Forearm Pronation • Forearm Supination

Flexor Digitorum Superficialis Location – • Anterior aspect of the elbow in supination. Movement – • Flexes proximal phalanges at matacarpophalangeal (MCP) joints. • Flexes middle phalanges at proximal interphalangeal (PIP) joints of medial 4 fingers.

Iliopsoas Combination of 3 muscles: 1. Psoas major 2. Psoas minor 3. Iliacus Location – • Abdomen Movement – • Torso Flexion • Hip Flexion

Rhomboid Major Location – • Back • Between the scapula and the spine Movement – • Scapular retraction

Sartorius Location – • Anterior aspect of the thigh • Medial aspect of the knee. Movement – • Hip Flexion • Hip External Rotation • Knee Flexion.

Levator Scapulae Location – • Back of the neck. Movement – • Scapula Elevation.

Semimebranosus Location – • Back of the thigh. Movement – • Knee Flexion • Hip extension and internal rotation.

Biceps Femoris Location – • Back of the thigh. Movement – • Knee Flexion • Hip extension

Semitendinosus Location – • Posterior aspect of the thigh. Movement – • Knee Flexion • Hip Extension

Posterior Deltoid Location – • Top and posterior of shoulder Movement – • Shoulder Extension

Gluteus Minimus Location – • Lateral aspect of the hip. Movement – • Hip Abduction • Hip Internal rotation.

Palmaris Longus Location • Inside of forearm Movement • Weak wrist flexion • Tenses skin and fascia of palm during hand movements. Extra Some people don’t have one (14%) • Touch your pointer finger with your 5 th finger and flex your wrist to see it.

Pronator Teres Location – • Anterior aspect of the elbow in supination. Movement – • Forearm Pronation • Elbow Flexion

Peroneus Longus Location – • Lateral, lower leg Movement – • Ankle Eversion. • Ankle Plantarflexion

Rhomboid Minor Location – • Upper back • Between scapula and spine Movement – • Retract scapula

Adductor Brevis Location – • Inside of thigh Movement – • Adducts hip.

Teres Major Location – • Back • Lower scapula Movement – • Shoulder adduction • Shoulder internal rotation

Middle Deltoid Location • Top of shoulder • Upper arm Movement • Shoulder Abduction

Vastus Lateralis Location – • Anterior aspect of thigh. Movement – • Knee Extension

Vastus Medialis Location – • Front of thigh Movement – • Extends knee Extras Part of the Quadriceps muscle group. • Tear drop on the inside is called the ‘oblique. ’

Vastus Intermedius Location – • Anterior aspect of the thigh. Movement – • Knee Extension

Soleus Location – • Posterior aspect of the lower leg. • Under the gastrocnemius. Movement – • Ankle Plantarflexion

Pectineus Location – • Inside of the thigh. Movement – • Hip Adduction • Hip Flexion

Gastrocnemius Location – • Posterior lower leg Movement – • Plantarflexes foot when knee extended • Knee flexion when ankle dorsiflexed

Tensor Fasciae Latae Location – • Lateral aspect of the upper leg. Movement – • Helps stabilize the hip and knee by putting tension on the iliotibial band of fascia.

Adductor Longus Location – • Inside of the thigh Movement – • Adduction of the hip

Adductor Magnus Location – • Medial aspect of the thigh. Movement – • Hip Adduction