Muscle

Muscular System Muscular System
Origin, Insertion and Action of Muscle

Prepared by

Dr. Mohammad Ahsan
Deptt. Physical Education Sri Ram College S iR C ll Muzaffarnagar

Origin, 

Starts at base of skull. Ends at last thoracic vertebra.

Insertion

Scapula and clavicle elevation

Action

Elevation Depression Adduction Rotation

Trapezius (Back Muscle)

Origin, 

Ribs (Surface)

Insertion

Scapula (medial Border)

Action
Serratus Anterior ( (Boxer’s Muscle) )

Elevation Abduction Upward Rotation

Origin, 

Sternum

Insertion

Humerus

Action

Depression Abduction Downward Rotation Moves humerus (arm) to h t t chest.

Pectoralis Major (Thrower Muscle) ( h l )

Origin, 

Sternum

Insertion

Humerus

Action

Moves humerus (arm) to chest.

Pectoralis Minor 

Origin, 

Costal cartilages, Medial inferiorcostal

Insertion

Margin and xiphoid

Action

Brings trunk forward, and aids expiration.

Rectus Abdominus (Abs)

Origin, 

Scapula

Insertion

Humerous

Action

Draw Hand

Teres Major

Origin, 

Clavicle, deltoid tuberosity, acromion and scapula

Insertion

Deltoid tuberosity (humerus)

Action

Raises and rotates arm in all directions.

Deltoid (Shoulder)

Origin, 

Lower thoracic, lumbar vertebrae and sacrum

Insertion

Humerus

Action

Brings shoulders and arms back to body.

Latissimus Dorsi  (Lats)

Origin, 

Brachi, scapula and Humerus

Insertion
Olecranon process (elbow)

Action

Extends forearm.

Triceps

Origin, 

Scapula

Insertion

Radius and ulna

Action

Flexes elbow and moves forearm forearm.

Biceps

Origin, 

Hip Bone

Insertion

Knee (Patella)

Action
Rectus Femoris

Extends Thigh

Origin, 

Illiac spine (Hip Bone)

Insertion

Tibia

Action

Flexion Adduction Outward Rotation

Sartorius (Tailor’s muscle)

Origin, 

Ilium

Insertion

Tibia (patella tendon)

Action

Extends leg out.

Rectus Femoris

Origin, 

Femur

Insertion

Tibia (patella tendon)

Action

Extends knee

Vastus Lateralis

Origin, 

Femur

Insertion

Tibia (patella tendon)

Action

Extends knee

Vastus Intermedius

Origin, 

Femur

Insertion

Tibia (patella tendon)

Action

Extends knee

Vastus Medialis

Origin, 

Femur Lower leg - back

Insertion

Calcaneum (by achilles tendon)

Action

Raises heel when leg is straight.

Gastrocnemius (Calf Muscle)

Origin, 

Ischium

Insertion

Fibula and Tibia

Action

Bends knee.

Tibia Biceps Femoris

Origin, 

Ischium

Insertion

Tibia

Action

Bends knee.

Semitendinosus

Origin, 

Ischium

Insertion

Tibia

Action

Bends knee.

Semimembranosus

Thanks Th k
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