All Muscles Flashcards
Subscapularis
O: medial 2/3 subscapular fossa
I: lesser tubercle of humerus
A: Medial rotation
I: subscapular nerve C5,6,7
Supraspinatus
O: medial 2/3 supraspinous fossa
I: upper facet on greater tubercle of humerus
A: adduction
I: suprascapular nerve C5,6
Infraspinatus
O: infraspinatus fossa (med 2/3)
I: mid facet of greater tubercle of humerus
A: lateral rotation
I: supraspinous nerve C5,6
Teres Minor
O: upper 2/3 lateral scapula
I: lower facet on greater tubercle
A: lateral rotation
I: axillary nerve C5,6
Trapezius
O: med 2/3 nuchal line, ligamentum nuchae, EOP, SP C7-T12, supraspinous ligaments
I: upper- anterior lateral 1/3 clavicle
Middle- medial acromion, superior lip of crest of spine of scapula
Lower- tubercle on spine of scapula
A: upper- elevate, middle- retract, lower- depress
I: spinal accessory nerve C2,3,4
Latissimus Dorsi
O: thoracolumbar fascia, SP T12-S5, supraspinous ligaments, inferior angle of scapula, outer surface of iliac crest, ribs 9-12
I: floor of bicipital groove
A: extends, adducts, medially rotates
I: thoracodorsal nerve C6,7,8
Rhomboid Minor
O: ligamentum nuchae, SP C7-T1
I: upper medial aspect of scapula
A: retract, medially rotate
I: dorsal scapular nerve C5
Rhomboid Major
O: SP T2-5, supraspinous ligaments
I: lower medial aspect of scapula
A: retracts, medially rotates
I: dorsal scapular nerve C5
Levator Scapulae
O: TP C1-4
I: upper medial aspect of scapula
A: elevate, retract, medially rotate
I: dorsal scapular nerve C5
Serratus Anterior
O: outer surface ribs 8-9, intercostal fascia
I: medial aspect of scapula
A: protracts, laterally rotates
I: long thoracic nerve 5,6,7
Pectoralis Minor
O: apex of coracoid process
I:: outer surface of ribs 3-5, intercostal fascia
A: protracts, medially rotates
I: medial and lateral pectoral nerve C6,7,8
Pectoralis Major
O: anterior med 1/3 clavicle, anterior sternum, 6th rib and upper 6 costal cartilages
I: bicipital groove, clavicular head inserts onto humerus inferior to groove
A: flexes, adducts, medially rotates
I: medial pectoral nerve C8,T1, lateral pectoral nerve C5,6,7
Subclavius
O: 1st rib
I: inferior clavicle
A: stabilises clavicle
I: nerve to subclavius C5,6
Coracobrachialis
O: apex of coracoid process
I: medial side shaft of humerus
A: adducts, flexes
I: musculocutaneous nerve C6,7
Teres Major
O: lower 2/3 lateral surface, inferior angle of scapula
I: medial lip of the bicipital groove
A: adducts, medially rotates
I: lower subscapular nerve C6,7
Deltoid
O: ant- lat 1/3 clavicle
Mid- outer border of acromion
Post- lower border of scapula (below spine)
I: deltoid tuberosity
A: abduct, ant- flex/med, post- ext/lat
I: Axillary nerve C5,6Biceps Brachii
Long head- supraglenoid tubercle, bitipital groove Short head- apex of coracoid process I: posterior radial tuberosity A: flexes, supinates I: musculocutaneous nerve C5,6
Brachialis
O: lower 2/3 anterior radius, adjacent septa
I: coronoid process, posterior ulna
A: flexes elbow
I: musculocutaneous nerve C5,6
Brachioradialis
O: upper 2/3 surpacondylar ridge of humerus, adjacent septa
I: lateral aspect of radius
A: mid range flexor
I: radial nerve C5,6
Supinator
Humeral head- lateral epicondyle Ulnar head- supinator crest, ulnar fossa I: anterior posterior lateral radius A: supinates forearm I: radial nerve C5,6
Triceps Brachii
Long head- infraglenoid tubercle, labrum
Lateral head- post humerus, lower/lateral to spiral groove
Medial head- post humerus, upper/medial to spiral groove
I: posterior olecranon of ulna
A: extends elbow
I: radial nerve C6,7,8
Anconeus
O: posterior aspect of lateral epicondyle of humerus
I: lateral olecranon, posterior ulna
A: stability, assists in extension
I: radial nerve C6,7
Pronator Teres
O: medial epicondyle, pronator ridge of ulna
I: mid lateral surface of radius
A: pronates forearm
I: Median nerve C6,7
Pronator Quadratus
O: lower 1/4 ulna
I: lower 1/4 radius
A: pronates
I: median nerve C8,T1
Flexor Carpi Radialis
O: medial epicondyle
I: palmar surface of 2/3 base of MC
A: flexes, radially deviates wrist
I: median nerve C6,7
Palmaris Longus
O: medial epicondyle
I: flexor retinaculum
A: weak wrist flexor
I: median nerve C8
Flexor Carpi Ulnaris
O: medial epicondyle
I: pisiform, via ligs into hook of hamate, base of 5th MC
A; flexes, ulnar deviates
I: ulnar nerve C7,8
Extensor Carpi Radialis Longus
O: lateral epicondyle
I: posterior border base of 2nd MC
A: extends, radially deviates wrist
I: radia nerve C6,7
Extensor Carpi Radialis Brevis
O: lateral epicondyle
I: posterior border of base of 3rd MC
A: extends, radially deviates wrist
I: radial nerve C6,7
Extensor Carpi Ulnaris
O: lateral epicondyle
I: posterior border of base of the 5th MC
A: extends, ulnar deviates wrist
I: radial nerve C6,7
Flexor Digitorum Superficialis
O: medial epicondyle, medial coronoid process, ulnar collateral ligament, upper 2/3 anterior radius
I: palmar surface of proximal phalanges 2-5
A: flexes joints at wrist, MCP, PIP
I: median nerve C7,8,T1
Flexor Digitorum Profundus
O: upper 2/3 anteromedial ulna, mid 1/3 interosseous membrane
I: palmar surface of distal phalanges 2-5
A: flexes wrist MCP PIP DIP joints
I: median nerve C8,T11
Extensor Digitorum
O: lateral epicondyle
I: dorsal digital expansion, posterior surface of distal and proximal phalanges 2-5
A: extends joints at wrist, MCP, DIP, PIP
I: radial nerve C7,8
Extensor Indicis
O: posterior ulna
I: dorsal expansion of 2nd finger
A: extends 2nd finger
I: radial nerve C7,8
Extensor Digiti Minimi
O: lateral epicondyle
I: dorsal expansion of 5th finger
A: extends 5th finger
I: radial nerve C7,8
