Latissimus Dorsi Spinous processes of inferior 6 thoracic vertebra Thoracolumbar fascia ---------------------------------------> Intertubercular sulcus of humerus Iliac Crest Inferior 3/4 ribs Levator Scapulae Transverse processes of C1-C4 ---------------> upper medial border of scapula Rhomboid Minor Nuchal ligament Spinous processes of C7- T1 vertebrae ---------------> medial border of scapula spine Rhomboid major Spinous processes of T2-T5 --> Medial border of scapula from spine to inferior angle Deltoid Lateral third of clavicle Acromion ------------------------------> Deltoid tuberosity of humerus Spine of scapula Supraspinatus Supraspinaous fossa of scapula --------> greater tubercle of humerus Infraspinatous Infraspinous fossa of scapula ----> greater tubercule of humerous Teres Minor Infraspinous fossa below infraspinatous vs. lateral border of scapula----> greater tubercle of humerus Teres Major Inferior angle of scapula ---> Intertubercular sulcus of humerus Subscapularis Subscapular fossa -------------> Lesser tubercle of humerus Biceps Short head (coaracoid process of scapula) Long head (supraglenoid tubercle of scapula) -----------> Bicipital tuberosity on radius + bicipital aponeurosis Coracobrachialis Coracoid process of scapula ----> medial humerus Brachialis Anterior humerus ---> Ulnar tuberosity Triceps Long head (infraglenoid tubercle of scapula) Lateral head (lateral posterior humerus) ---------------> Olecronon Medial head (medial posterior humerus) Anconeus Lateral epicondyle ----> lateral aspect of ulnar, near olecronon Pronator Teres Ulnar head: coronoid process Humeral head: medial epicondyle of humerus --------------> middle convexity of lateral radius Flexor Carpi Radialis Medial epicondyle of humerus medial ulnar ----------->base of 2nd metacarpal Palmaris Longus Medial epicondyle -----> Palmar aponeurosis Omohyoid Upper border of scapula--> hyoid bone Proximal row of metacarpal bones, lateral to medial Scaphoid, Lunate, triquetrum , Pisiform Distal row of metacarpal bones, lateral to medial Trapezium, Trapezoid, Hamate, Capitate Brachioradialis Lateral humerus ----------> Distal radius Pronator Quadratus Distal quarter of anterior ulnar --> Distal quarter of anterior radius Supinator lateral epicondyle + annular ligament+ supinator crest on ulnar ----------> lateral radius (above pronator teres insertion) Flexor carpi ulnaris Medial epicondyle of humerus medial ulnar ----------->Pisiform bone (piso-hamate & piso-metacarpal ligements transmit force to base of 5th metacarpal) Extensor Carpi Radialis Longus Lateral supracondylar ridge---------------------> base of 2nd metacarpal (dorsal aspect) Extensor Carpi Radialis Brevis Lateral epicondyle of humerus ----------------> Base of 3rd metacarpal (dorsal aspect) Extensor Carpi Ulnaris Lateral epicondyle --------------------------> Dorsal aspect of base of 5th metacarpal Posterior border of ulnar Flexor Digitorum profundus Medial ulnar+interosseous membrane ---------> bases of distal phalanges of 2nd, 3rd, 4th, and 5th metatarsals Flexor Digitorum Superficialis Radial head: anterior radius ----------> shaft of middle phalanx of 2nd - 5th digit. Humeral-ulnar head: medial epicondyle + adjoining ulnar Extensor Digitorum Lateral epicondyle -----> Extensor expansions of medial 4 digits Extensor Digiti minimi Lateral epicondyle of humerus (common extensor tendon)----->extensor expansion of 5th digit Extensor indicis Distal third of ulna and interosseous membrane (posterior side) -------> extensor expansion of 2nd digit Flexor Pollicis Longus Anterior radius + interosseous membrane ------->Base of distal phalanx of thumb Abductor Pollicis Longus Posterior surface of radius + interosseous membrane -----> Base of 1st metacarpal Extensor Pollicis Longus Posterior ulna + interosseous membrane -------> Base of distal phalanx of thumb (dorsal aspect) Extensor Pollicis Brevis Posterior radius + interosseous membrane -------------> Base of proximal phalax of thumb (Dorsal aspect) Palmar interosseous Palmar surfaces of 2nd, 4th, and 5th metacarpals -------> bases of corresponding proximal phalanges, and extensor expansions of corresponding digits. Dorsal interossei Adjacent sides of 2 metacarpals (as bipennate muscles) ---> bases of proximal phalanges 2, 3, and 4, & extensor expansions of 2nd, 3rd, and 4th digits. Trapezius Medial third of superior nuchal line External occipital protruberance -------------------> Lateral third of clavicle nuchal ligament Acromion Spinous process of c7-T12 Spine of scapula Serratus Anterior Medial scapula - > ribs 1-8 Pectoralis Minor Coracoid process --> ribs 3-5 Subclavius subclavian groove of clavicle (inferior surface) --> 1st rib (junction between rib and costal cartilage) Pectoralis Major attachments Intertubacular sulcus of humerus -> Clavicular head: Medial third of clavicle (clavicular head) --->Sternocostal head: anterior surface of sternum, superior 6 costal cartilages, external oblique aponeurosis . Lumbricals Arise from one or both sides of flexor digitorum profundus tendon -----> Radial side of extensor expansion of digits 2-5. Adductor Pollicis shaft of 3rd metartarsal (transverse head) bases of 2nd and 3rd metacarpals ------------------> medial side of base of proximal phalanx of the thumb. Roof of carpal tunnel is formed by what structure Flexor Retinaculum Wrist extensors, and extensors to fingers and thumbs pass under what structure @ the wrist? Extensor retinaculum Begining at the MP joint and extending all the way to the distal phalanx, it provides the flexor tendens an enclosed tunnel to run in Flexor tendon sheath What structure occupies the floor of the flexor tendon sheath at the MP joint? Palmar plate Abductor pollicis Brevis Trapezium + Flexor retinaculum ------> base of proximal phalanx of thumb (radial side) Flexor Pollicis Brevis Trapezoid + flexor retinaculum--------> Base of proximal phalanx of thumb (radial side) Opponens Pollicis Trapezium + Flexor retinaculum -------------> 1st metacarpal (radial side). Thenar muscles (3) Opponens pollicis, Abductor Pollicis brevis, Flexor pollicis brevis Hypothenar muscles (3) Abductor digiti minimi, Flexor digiti minimi, Opponens digiti Abductor digiti minimi Pisiform -------> base of proximal phalanx of 5th digit (medial side) Flexor Digiti minimi Hamate + Flexor retinaculum -------------> base of proximal phalanx of 5th digit (medial side) Opponens digiti Hamate --------> ulnar (medial) border of 5th metacarpal