Muscle Origin/Insertion Flashcards
Latissimus dorsi
Origin: spinous process of T1-L3
Insertion: intertubercular groove on humerous
Trapezius
Origin: occiput, nuchal ligament, spinous process of thoracic vertebra
Insertion: scapular spine, acromion
Rhomboideus major and minor
Origin: upper thoracic spinous process
Insertion: vertebral border of scapula
Levator scapulae
Origin: transverse process of C1-4
Insertion: vertebral border of scapula between superior angle and base of scapular spine
Serratus anterior
Origin: ribs 1-8 or 9
Insertion: vertebral border of scapula
Teres major
Origin: lower axillary border of scapula
Insertion: medial lip of inter tubercular groove on humerus
Deltoideus
Origin: clavicle, acromion, scapular spine
Insertion: deltoid tuberosity on humerus
Supraspinatus
Origin: supraspinous fossa
Insertion: greater tubercle of humerus
Teres minor
Origin: middle of axillary border of scapula
Insertion: greater tubercle of humerus
Subscapularis
Origin: subscapular fossa
Insertion: lesser tubercle of humerus
Pectoralis major
Origin:
-clavicular head: medial half of clavicle
-sternocostal head: ribs 2-6, costal margin of sternum
Insertion: lateral lip of intertubercular groove of humerus
Pectoralis minor
Origin: ribs 2-5
Insertion: coracoid process of scapula
Coracobrachialis
Origin: coracoid process of scapula
Insertion: proximal shaft of humerus
Biceps brachii
Origin:
-long head: supraglenoid tubercle of the scapula
-short head: coracoid process of scapula
Insertion: bicipital tuberosity of radius (non functionally attached to ulnar tuberosity via bicipital aponeurosis)
Brachialis
Origin: distal two thirds of humeral shaft
Insertion: ulnar tuberosity of ulna
Triceps brachii
Origin:
-long head: infraglenoid tubercle of scapula
-medial head: posterior surface of medial border of humerus
-lateral head: posterior surface of lateral border of humerus
Insertion: olecranon
Pronator teres
Origin: medial epicondyle of humerus, coronoid process of ulna
Insertion: midshaft radius
Flexor carpi radialis
Origin: medial epicondyle of humerus
Insertion: base of 2nd and 3rd metacarpals
Palmaris longus
Origin: medial epicondyle of humerus
Insertion: palmar aponeurosis
Flexor digitorum superficialis
Origin: medial epicondyle of humerus, coronoid process do ulna, anterior border of proximal radius
Insertion: base of middle phalanges 2-5
Pronator quadratus
Origin: distal portion of ulnar shaft
Insertion: distal portion of radial shaft
Flexor pollicis longus
Origin: proximal half of radius and adjacent interosseus membrane
Insertion: 1st digit phalanx
Flexor digitorum profundus
Origin: proximal two thirds of ulnar shaft and adjacent interosseous membrane
Insertion: base of distal phalanx of digits 2-5
Flexor carpi ulnaris
Origin: medial epicondyle of humerous, medial side of olecranon, proximal 2/3 of ulnar shaft
Insertion: pisiform, hamate, base of 5th metacarpal, flexor retinaculum
Anconeus
Origin: lateral epicondyle of humerous
Insertion: lateral side of olecranon
Brachioradialis
Origin: lateral supracondylar ridge of humerous
Insertion: lateral surface of distal radius
Extensor carpi radialis longus
Origin: lateral supracondylar ridge of humerous
Insertion: dorsal surface of base of second metacarpal
Extensor carpi radialis brevis
Origin: lateral epicondyle of humerous
Insertion: dorsal surface of base of 3rd metacarpal
Extensor digitorum
Origin: lateral epicondyle of humerous
Insertion: dorsal digital expansion hoods of digits 2-5
Extensor digit minimi
Origin: lateral epicondyle of humerous
Insertion: dorsal digital expansion hood of digit 5
Extensor carpi ulnaris
Origin: lateral epicondyle of humerous
Insertion: medial side of base of 5th metacarpal
Supinator
Origin: lateral epicondyle of humerous, supinator crest of ulna
Insertion: lateral surface of proximal radius
Extensor indicis
Origin: posterior surface of distal ulna
Insertion: dorsal digital expansion hood of digit 2
Abductor pollicis longus
Origin: posterior surfaces of radius and ulna
Insertion: lateral side of the base of 1st metacarpal, trapezium
Extensor pollicis brevis
Origin: posterior surface of distal radius
Insertion: base of thumb’s proximal phalanx
Extensor pollicis longus
Origin: posterior surfaces of middle ulna
Insertion: base of thumbs distal phalanx
Abductor pollicis brevis
Origin: flexor retinaculum, trapezium, scaphoid
Insertion: base of 1st dig it’s proximal phalanx
Flexor pollicis brevis
Origin: flexor retinaculum, trapezium, trapezoid, capitate
Insertion: base of 1st digit’s proximal phalanx
Opponents pollicis
Origin: trapezium, flexor retinaculum
Insertion: lateral border of 1st metacarpal
Abductor digit minimi
Origin: pisiform, tendon of flexor carpi ulnaris
Insertion: base of 5th digits proximal phalanx
Flexor digit minimi
Origin: hamate hamulus, flexor retinaculum
Insertion: base of 5th digit’s proximal phalanx
Opponents digiti minimi
Origin: hamate hamulus, flexor retinaculum
Insertion: midshaft of 5th metacarpal
Palmaris brevis
Origin: flexor retinaculum, medial palmar aponeurosis,
Insertion: skin of hypothenar eminence
Lumbericals
Origin: tendons of flexor digitorum profoundis in palm
Insertion: extensor hoods digits 2-5
Dorsal interossei (4)
Origin: shafts of adjacent metacarpals
Insertion: base of proximal phalanx, dorsal expansion hoods digits 2-4
Palmar interossei (3)
Origin: medial side of 2nd metacarpal shaft, lateral side of 4th and 5th metacarpal shafts
Insertion: base of proximal phalanx digits 2, 4, 5
Adductor pollicis
Origin:
-oblique head: capitate, 2-3rd metacarpals
-transverse head: 3rd metacarpal
Insertion: base of 1st proximal phalanx
