Origins Of Upper Limb Muscles Flashcards
What is the origin of pectoralis major?
Clavicular head to clavicle
Sternocostal head to sternum and ribs
What is the origin of pectoralis minor?
Anterior surface of ribs 3-55
What is the origin of serratus anterior?
Upper 8 or 9 ribs
What is the origin of deltoid?
Spine of scapula
Acromion
Clavicle
What is the origin of teres major?
Posterior surface of inferior angle of scapula
What is the origin of supraspinatus?
Supraspinous fossa of scapula
What is the origin of infraspinatus?
Infraspinous fossa of scapula
What is the origin of subscapularis?
Subscapular fossa of scapula
What is the origin of teres minor?
Posterior surface of scapula, adjacent to lateral border
What are the origins of trapezius?
Skull
Ligamentum nuchae
Spinous processes of C7-T12
What are the origins of latissimus dorsi?
Spinous processes of T6-T12
Iliac crest
Thoracolumbar fascia
Inferior 3 ribs
What is the origin of lavatory scapulae?
Transverse processes of C1-C4 vertebrae
What is the origin of rhomboid minor?
Spinous processes of C7-T1
What is the origin of rhomboid major?
Spinous processes of T2-T5
What is the origin of the long head of biceps brachii?
Supraglenoid tubercle of scapula
What is the origin of the short head of biceps brachii?
Coracoid process of scapula
What is the origin of coracobrachialis?
Coracoid process of scapula
What is the origin of brachialis?
Medial and lateral surfaces of humeral shaft
What is the origin of the long head of triceps brachii?
Infraglenoidal tubercle
What is the origin of the medial head of triceps brachii?
From humerus, inferior to radial groove
What is the origin of the lateral head of triceps brachii?
From humerus, superior to radial groove
What is the origin of pronator teres?
Medial epicondyle
Coronoid process of ulna
What is the origin of flexor carpi radialis?
Medial epicondyle
What is the origin of palmaris longus?
Medial epicondyle
What is the origin of flexor carpi ulnaris?
Medial epicondyle
What is the origin of the humeroulnar head of flexor digitorum superficialis?
Medial epicondyle
What is the origin of the radial head of flexor digitorum superficialis?
Anterior border of radius
What is the origin of flexor digitorum profundus?
Ulnar and interosseus membrane
What is the origin of flexor pollicis longus?
Anterior surface of radius and surrounding interosseus membrane
What is the origin of pronator quadratus?
Anterior surface of ulna
What is the origin of brachioradialis?
Lateral supraepicondylar ridge of humerus
What is the origin of extensor carpi radialis brevis?
Lateral epicondyle of humerus
What is the origin of extensor carpi radialis longus?
Lateral supracondyle ridge of humerus
What is the origin of extensor digitorum?
Lateral epicondyle
What is the origin of extensor digiti minimi?
Lateral epicondyle
What is the origin of extensor carpi ulnaris?
Lateral epicondyle
What is the origin of anconeus?
Lateral epicondyle
What is the origin of supinator?
Lateral epicondyle
Posterior surface of ulna
What is the origin of abductor pollicis longus?
Posterior surfaces of ulna, radius and interosseus membrane
What is the origin of extensor pollicis brevis?
Posterior surface of radius and interosseus membrane
What is the origin of extensor pollicis longus?
Posterior surface of ulna and interosseus membrane
What is the origin of extensor indicis?
Posterior surface of ulna and interosseus membrane (distal to extensor pollicis longus)
What is the origin of opponens pollicis?
Tubercle of trapezium and flexor retinaculum
What is the origin of abductor pollicis brevis?
Tubercles of scaphoid and trapezium and flexor retinaculum
What is the origin of flexor pollicis brevis?
Tubercle of trapezium and flexor retinaculum
What is the origin of opponens digiti minimi?
Hook of hamate and flexor retinaculum
What is the origin of abductor digiti minimi?
Pisiform and flexor carpi ulnaris tendon
What is the origin of flexor digiti minimi brevis?
Hook of hamate and flexor retinaculum
What are the origins of the lumbricals?
Each originates from tendon of flexor digitorum profundus
What is the origin of dorsal interossei?
Lateral and medial surfaces of metacarpals
What is the origin of palmar interossei?
Lateral and medial surfaces of metacarpals
What is the origin of palmaris brevis?
Palmar aponeurosis and flexor retinaculum
What is the origin of adductor pollicis?
One head from third metacarpal
Other head from capitate
Adjacent areas of second and third metacarpals