Muscles of upper limb Flashcards
Pectoralis major
O: 1.Clavicular part- ant.surface of clavicle
2. Sternocostal part- ant. surface of sternum + rib 1-6
3. Abdominal part- rectus sheath
I: crest of greater tubercle
I: medial and lateral pectoral n.
F: Anteflexion, Adduction, depression, downward rotation, medial rotation, protraction
Pectoral minor
O: 3->5 ribs
I: coracoid process
I: lateral pectoral n.
F: anteflexion, adduction, depression, protraction, downward rotation
Subclavius
O: junction at cartilage and 1st rib
I: subclavicular groove
I: Subclavian n.
F: depression of shoulder
Serratus anterior
O: external surface of 1->8 ribs
I: medial border of scapula
I: long thoracic nerve
F: elevation of arm(160-180), protraction of shoulder, depression of shoulder, upward rotation
Trapezius
O: 1. Descending - sup. nuchal line, ext.occipital protuberande, nuchal ligament
2. Transverse - spinous process C7-T3 3. Ascending - spinous process T4-T12
I: 1. lateral 1/3 of clavicle 2. acromion 3. spine of scapula I: accessory nerve F: abduction, elevation, retraction, depression, upward rotation
Latissimus dorsi
O: spinous process T6-T12, thoracolumbar fascia, iliac crest, 9->12 rib
I: crest of lesser tubercle
I: thoracodorsal nerve
F: retroflexion, adduction, medial rotation, depression, downward rotation, retraction
Levator scapulae
O: transverse process C1-C4
I: sup. angle of scapula
I: dorsal scapular nerve
F: elevation of shoulder
Rhomboid major
O: spinous process T1-T6
I: medial border of scapula
I: dorsal scapular nerve
F: downward rot., retraction, elevation
Rhomboid minor
O: spinous process C6-C7
I: medial border of scapula
I: dorsal scapular nerve
F: downward rot, retraction, elevation
Deltoid
O: clavicle, acromion, spinous process of scapula
I: deltoid tuberosity
I: axillary nerve
F: anteflexion, retroflexion, abduction, med and lat rotation
Supraspinatus
O: supraspinous fossa
I: greater tubercle
I: suprascapular nerve
F: abduction of arm
Infraspinatus
O: infraspinous fossa
I: greater tubercle
I: suprascapular nerve
F: lat. rotation, adduction
Teres minor
O: lateral border of scapula
I: greater tubercle
I: axillary nerve
F: lat. rotation, adduction
Teres major
O: lateral border of scapula
I: crest of lesser tubercle
I: lower subscapular/ thoracodorsal nerve
F: retroflexion, adduction, med. rotation
Subscapularis
O: subscapular fossa
I: lesser tubercle
I: upper and lower sub scapular nerve
F: med. rotation, adduction
Brachialis
O: ant. surface of humerus
I: tuberosity and coronoid process of ulna
I: musculocutaneous n
F: flexion
Biceps brachii
O: 1:long head - supraglenoid tubercle
2. short head - coracoid process
I: radial tuberoisty, bicipital aponeurosis
I: musculocutaneous n
F: anteflexion, abduction, med. rotation, adduction, flexion, supination
Coracobrachialis
O: coracoid process
I: med. surface of humerus
I: musculocutaneous n
F: anteflexion, adduction
Triceps brachii
O: 1.Long head- infraglenoid tubercle
2. medial head - post. surface of humerus
3. lateral head - post. surface of humerus
I: olecranon
I: radial nerve
F: adduction, extension
Aconeus
O: lateral epicondyle
I: dorsal part of ulna
I: radial nerve
Pronator teres
O: 1. humeral head- medial epicondyle
2. ulnar head - coronoid process of ulna
I: pronator tuberosity of radius
I: median nerve
F: flexion, pronationFlexor carpi radialis
O: medial epicondyle
I: base of 2nd metacarpal
I: median nerve
F: flexion, pronation, palmarflexion, abduction of radius
Palmaris longus
O: medial epicondyle
I: palmar aponeurosis
I: median nerve
F: flexion
Flexor digitoris superficialis
O: 1. humeral head - medial epicondyle
2. ulnar head - coronoid process
3. radial head - superior radius
I: shaft of middle phalanx of 2nd - 5th finger
I: median nerve
F: palmar flexion, flexion of phalanxFlexor carpi ulnaris
O: 1. ulnar head - olecranon + post. border
2. humeral head - medial epicondyle
I: pisiform, hook of hamate, 5th metacarpal
I: ulnar nerve
F: palmarflexion, abduction of ulna
Flexor digitorum profundum
O: palmar surface of ulna, interosseous membrane
I: base of detail phalanx of 2nd to 5th
I: ulnar and median nerve
F: palmarflexion, flexion of phalanx
Flexor pollicis longus
O: ant surface of radius, interosseous membrane
I: base od sital phalanx of thumb
I: median nerve
F: palmarflexion, flexion of thumb, opposition, flexion of phalanx
Pronator quadratus
O: ant surface of ulna
I: ant surface of radius
I: median nerve
F: pronation
Brachioradialis
O: lateral supracondylar crest
I: radial styloid process
I: radial nerve
F: flexion of elbow
Extensor carpi radialis longus
O: lateral supracondylar crest
I: base of 2nd metacarpal
I: radial nerve
F: flexion, dorsalflexion, abduction of radius
Extensor carpi radialis brevis
O: lateral epicondyle
I: base of 3rd metacarpal
I: radial nerve
F: flexion, dorsalflexion, abduction of radius
Extensor digitorum
O: lateral epicondyle
I: extensor expansions of 2nd to 4th
I: radial nerve
F: dorsalflexion, extension of phalanx
Extensor digiti minimi
O: lateral epicondyle
I: extensor expansion of 5th
I:radial nerve
F: extension of phalanx, addict of phalanx
Extensor carpi ulnaris
O: post border of ulna, lateral epicondyle
I: base of 5th metacarpal
I:radial nerve
F: dorsalflexion, abduction on ulna
Supinator
O: supinator crest, lateral epicondyle
I: prximal radius
I: radial nerve
F: supinaton
Abductor pollicis longus
O: post ulna, radius, interosseous membrane
I: base of 1st metacarpal
I: radial nerve
F: supination,palmarflexion, abduction of radius, abduction of thumb, extension and reposition of thumb
Extensor pollicis longus
O: dorsal ulna, interosseous membrane
I: base od 1st distal phalanx
I: radial nerve
F: supination, dorsalflexion, abduction of radius, extension&adduction&reposition of thumb, extension of phalanx
Extensor pollicis brevis
O: middle ulna, radius, interosseous membrane
I: base of 1st proximal phalanx
I: radial nerve
F: extension, reposition of thumb, extension of phalanx
Extensor indicis
O: post. ulna, interosseous membrane
I: extensor expansion of 2nd
I: radial nerve
F: dorsalflexion, abduction of radius, extension and adduction of phalanx
Abductor pollicis brevis
O: scaphoid tubercle, flexor retinaculum
I: base of proximal phalanx of thumb
I: median nerve
F: flexion, abduction, opposition of thumb
Flexor pollicis brevis
O: 1. Superficial head - flexor retinaculum
2. deep head - tubercle of trapezium
I: metacarpophalangeal joint of thumb
I: median and ulnar nerve
F: flexion, abduction, opposition of thumb
Opponens pollicis
O: tubercle of trapezium, flexor retinaculum
I: 1st metacarpal
I: median nerve
F: flexion, abduction and opposition of thumb
Adductor pollicis
O: 1. oblique head - base of 2nd and 3rd metacarpal
2. transverse head - 3rd metacarpal
I: metacarpo-phalangeal joint of thumb
I: ulnar nerve
F: flexion, adduction, oppositionAbductor digiti minimi
O: pisiform, pisihamate ligament
I: base pf proximal phalanx of 5th
I: ulnar nerve
F: flexion, abduction, extension
Flexor digiti minimi brevis
O: hook of hamate, flexor retinaculum
I: base of proximal phalanx of 5th
I: ulnar nerve
F: flexion
Opponens digiti minimi
O: hook of hamate, flexor retinaculum
I: 5th metacarpal
I: ulnar nerve
Lumbrical 1-4
O: 1&2: radial 2 tendons of flexor digitorum profun.
3&4: ulnar 3 tendons
I: extensor expansions
I: ulnar, median
F: flexion, extensionDorsal interossei 1-4
O: between 2 metacarpals
I: base of proximal phalanx and extensor expansion
I:ulnar nerve
F: flexion, abduction, extension
Palmar interossei 1-3
O: 2nd, 4th, 5th metacarpal
I: base of proximal phalanx, extensor expansion
I: ulnar nerve
F: flexion, adduction, extension
