Muscle Origins Flashcards
Quadratus Lumborum
Iliac Crest
Spinalis
Spinous Processes
Longissimus
Transverse Processes
Iliocostalis
Ilium/sacrum/thoracolumbar fascia
Rectus Abdominis
Pubic crest and symphysis
External Oblique
Anterior angles of lower 8 Ribs
Internal Oblique
Thoracolumbar fascia, iliac crest, superior iliac spine
Sternocleidomastoid
Manubrium + medial 1/3 of clavicle
Transverse Abdominis
Costal margin, lumbar fascia, anterior 2/3 of iliac crest, + lat. 1/2 of inguinal lig.
Scalenes (Post)
Transverse Process of C5-7
Scalenes (Mid)
TP of C3-7
Scalenes (Ant)
TP C3-6
Biceps Brachii (short)
tip of coracoid process
Biceps Brachii (long)
Supraglenoid tubercle of scapula, capsule of glenohumeral joint + labrum
Triceps Brachii (Long)
Infraglenoid tubercle of scapula
Triceps Brachii (lat)
Post. surface of humerus, superior to radial groove + lateral inter muscular septum
Triceps Brachii (Medial)
Post. surface of humerus inferior to radial groove, medial + lat. inter muscular septa
Deltoid (ant)
For all- clavicle
Ant: ant. border, superior surface, lateral 1/3 of clavicle
Deltoid (Mid)
Lat. margin + superior surface of acromion
Deltoid (Post fibers)
Inferior lip of post. border of spine of scapula
Serratus Anterior
Ext. surfaces of lat. parts of 1-8 ribs
Rhomboid Minor
Ligamentum nuchae, spinous process of C7 & T1
Rhomboid Major
Spinous process of T2-T5
Teres Minor
Upper 2/3, dorsal surface of lateral border of scapula
Infraspinatus
Medial 2/3 of infraspinatus fossa of scapula
Supraspinatus
Medial 2/3 of supraspinatus fossa of scapula
Subscapularis
Subscapular fossa of scapula
Teres Major
Dorsal or post. surfaces of inf. angle + lower 1/3 of lat. border of scapula
Pectoralis Major (ant)
cartilages of ribs 1-7
Pec. Major (clavicle)
ant. surface of medial 1/2 of clavicle
Pec. Major (stern)
Ant. surface of sternum sup. 6 costal cartilages, aponeurosis of ext. obliques
Pectoralis Minor
3-5 ribs near their costal cartilages
Upper trapezius
occipital protuberance, medial 1/3 of sup. nuchal line, ligament nuchae, + spinous process of C7
Middle Trapezius
Spinous process of T1-5
Lower Trapezius
Spinous process of T6-12
Latissimus Dorsi
Spinous process of last 6 thoracic, last 3-4 ribs
Levator Scapulae
TP of C1-4
Coracobrachialis
Apex of coracoid process of scapula
Anconeus
lateral epicondyle of humerus and capsule of elbow joint
Opponens pollicis
Tubercle of trapezium and flexor retinaculum
Palmar interossei
Shaft of 2,4, & 5 Metacarpals (capitate & hamate)
Dorsal interossei
Adjacent of all Metacarpals
Lumbricals
Palmar Surface of FDP
Pronator teres
Humeral head: shaft proximal to medial epicondyle and common flexor tendon
Ulnar Head: coronoid process
Pronator Quadratus
Distal 1/4 of anterior surface of ulna
Supinator
Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator crest of ulnar
Extensor digiti minimi
Lateral epicondyle of humerus
Extensor digitorum
Lateral epicondyle of humerus
Brachioradialis
Proximal 2/3 of lateral supracondylar ridge of humerus and lateral inter muscular septum
Brachialis
Distal end of anterior surface of humerus
Flexor carpi radialis
Medial epicondyle of humerus by common flexor tendon
Palmaris longus
Medial condyle of humerus by common flexor tendon
Extensor pollicis brevis
Posterior surface of distal 1/3 of radius
Extensor indicis
Posterior surface of distal 1/3 of ulna below the origin of EPL
Abductor pollicis longus
Posterior surface of shaft of ulna; middle 1/3 of post. shaft of radius; interosseuss membrane
Extensor pollicis longus
posterolateral surface of middle shaft of ulna
Extensor Carpi radialis longus
Lateral supracondylar ridge of humerus, common extensor tendon, lateral intermuscular septum
Abductor pollicis brevis
Tubercle of scaphoid and trapezium, flexor retinaculum
Adductor pollicis
Oblique head: capitate and base of 2nd & 3rd MC
Transverse Head: shaft of 3rd metacarpal
Flexor pollicis brevis
Superficial head: tubercle of trapezium
Deep head: capitate and trapezoid
Flexor digiti minimi
Hook of hamate and flexor retinaculum
Abductor digiti minimi
Pisiform and tendon of FCU
Opponens digiti minimi
Hook of hamate and flexor retinaculum
Flexor Carpi Ulnaris
Humeral Head: medial epicondyle of humerus by common flexor tendon
Ulnar Head: olecranon and posterior border of ulna via an aponeurosis
Flexor digitorum superficialis
Humeral/ulnar head: medial epicondyle of humerus, ulnar collateral ligament, medial side of coronoid process
Radial Head: oblique line on anterior surface of radial shaft
Flexor pollicis longus
Anterior surface of middle of shaft of radius
Extensor carpi ulnaris
Lateral epicondyle of humerus; post border of ulna by an aponeurosis shared by FCU and FDP
Extensor carpi radialis brevis
Lateral epicondyle of humerus, radial collateral ligament of elbow joint
Flexor digitorum profundus
Upper 3/4 of anterior and medial surfaces of ulna, coronoid process via aponeurosis