Download Muscles

Upper Body Muscles
Trapezius - 3 sections (stabilizes scapula)
Upper
Origin - C1 - C7
Insertion - Acromion Process and lateral clavicle
Action - Elevation of shoulder girdle
Middle
Origin - T1 - T5
Insertion - spine of scapula
Action - Retraction and assist in elevation
Lower
Origin - T5 - T12
Insertion - medial spine of scapula
Action - depression of shoulder girdle
Levator Scapulae - back pack muscle
Origin - C1 - C4
Insertion - superior angle of scapula
Action - Elevation of Scapula
Rhomboids - stabilize scapula
Origin - C7 - T5
Insertion - medial border of scapula
Action - retraction and scapular adduction
Special - used for dips and pull ups
Serratus Anterior - Boxers muscle (Bench, and Punch)
Origin - 1-9 ribs (side of chest)
Insertion - medial border of scapula
Action - protraction
Special - keeps medial border of scapula down
Pec Minor - Push ups
Origin - anterior 3,4,5 ribs
Insertion - Coracoid process of scapula
Action - protraction of shoulder girdle
Deltoid - 3 sections
Anterior
Origin - lateral clavicle
Insertion - Deltoid tuberosity
Action - Adduction, GH flexion, Abduction
Middle
Origin - Acromion Process
Insertion - Deltoid tuberosity
Action - Abduction
Posterior
Origin - spine of scapula
Insertion - Deltoid tuberosity
Action - abduction, extension
Coracobrachialis - not very powerful
Origin - coracoid process of scapula
Insertion - middle, medial humerus
Action - Horrizontal Adduction
Supraspinatus - Rotator cuff muscle (#1 injury)
Origin - supraspinatus fossa
Insertion - greater tubercle
Action - little abduction (stabilizer)
Infraspinatus - pitchers injure this (#2 injury)
Origin - infraspinous fossa
Insertion - greater tubercle
Action - External rotation
Teres Minor - helps infraspinatus
Origin - lateral border of scapula
Insertion - greater tubercle
Action - External rotation
Subscapularis
Origin - subscapularis fossa
Insertion - lesser tubercle
Action - internal rotation
Teres Major - littler helper
Origin - inferior angle of scapula on lateral border
Insertion - lesser tubercle
Action - adduction, and internal rotation
Latissmus Dorsi - broad long muscle (swimmers)
Origin - T6 - L5, sacrum, posterior iliac crest
Insertion - lesser tubercle
Action - extension, adduction, internal rotation
Special - pull ups
Pec Major - bench press
Origin - medial clavicle, 1-6 ribs
Insertion - lateral interbercular groove
Action - adduction, abduction
Biceps Brachii
Origin – long head – superior glenoid fossa
Short head – coracoid process
Insertion – radial tuberosity
Action – elbow flexion, supination
Brachialis
Origin – distal half of anterior humerous
Insertion – coranoid process
Action – elbow flexion
Brachioradialis
Origin – lateral epicondyle
Insertion – distal lateral radius
Action – elbow flexion pronation and supination
Special – 12 oz curl muscle
Triceps brachii
Origin – Long head – inferior glenoid fossa
Lateral head – proximal posterior humerus
Medial head – distal posterior humerus
Insertion – olecronan process
Action – elbow extension
Anconeous
Origin – lateral epicondyle
Insertion – olecranon process
Action – pull joint capsule out of way when elbow extends
Supinator
Origin – lateral epicondyle
Insertion – lateral anterior proximal radius
Action – supination
Pronator teres
Origin – medial epicondyle
Insertion – middle of lateral radius
Action – pronation, weak flexion of elbow
Pronator Quadratus
Origin – distal anterior ulna
Insertion – distal anterior radius
Action – pronation
Flexor carpi radialis
Origin – medial epycondyle of humerus
Insertion – 2 and 3 metacarpal
Action – wrist flexion, radial deviation
Palmaris longus
Origin – medial epicondyle
Insertion – palmar aponeurosis
Action – wrist flexion
Flexor carpi ulnaris
Origin – medial epicondyle
Insertion – pisiform, hammate, base of 5ht metacarpal
Action – wrist flexion, ulnar deviation
Extensor carpi radialis
Origin – lateral epicondyle
Insertion – base of 2 and 3 metacarpals
Action – extend wrist and radial deviation
Extensor carpi ulnaris
Origin – lateral epicondyle
Insertion – base of 5th metacarpal
Action – extension of wrist, ulnar deviation
Flexor digitorum superficialis
Origin – medial epicondyle and proximal anterior radius
Insertion – middle phalanx of 2-5
Action – flexes proximal interphalangeal joint and wrist flexion
Flexor digitorum profundus
Origin – proximal anterior ulna
Insertion – distal phalanx of 2-5
Action – flexes distal interphalangeal joint
Flexor pollicis longus
Origin – medial epicondyle and anterior middle radius
Insertion – distal phalanx of thumb
Action – flexes thumb and wrist
Extensor digitorum
Origin – lateral epicondyle
Insertion – distal phalanx of 2-5
Action – extends fingers
Extensor indicis
Origin – distal posterior ulna
Insertion – distal phalanx
Action – extends index finger
Extensor digiti minimi
Origin – lateral epicondyle
Insertion – distal phalanx of little finger
Action – extends little finger
Extensor pollicis
Origin – middle posterior ulna
Insertion – distal phalanx of thumb
Action – extends thumb
Abductor pollics
Origin – middle posterior ulna
Insertion – 1st metacarpal
Action – abduct thumb