Muscles of the Upper Limb Flashcards
Information used from Netter's Atlas of Human Anatomy (153 cards)
1
Q
What are the main actions of the Abductor digiti minimi muscle?
A
Abducts little finger
2
Q
What are the main actions of the Abductor pollicis brevis muscle?
A
Abducts thumb
3
Q
What are the main actions of the Abductor pollicis longus muscle?
A
Abducts and extends thumb at carpometacarpal joint
4
Q
What are the main actions of the Adductor pollicis muscle?
A
Adducts thumb
5
Q
What are the main actions of the Anconeus muscle?
A
Assists triceps brachii in extending elbow, abducts ulna in pronation
6
Q
What are the main actions of the Biceps Brachii muscle?
A
Flexes and supinates forearm at elbow
7
Q
What are the main actions of the Brachialis muscle?
A
Flexes forearm at elbow
8
Q
What are the main actions of the Brachioradialis muscle?
A
Weak flexion of forearm when forearm is midpronated
9
Q
What are the main actions of the Coracobrachialis muscle?
A
Flexes and adducts arm at shoulde
10
Q
What are the main actions of the Deltoid muscle?
A
Clavicular part: flexes and medially rotates arm Acromial part: abducts arm beyond initial 15 degrees done by supraspinatus Spinous part: extends and laterally rotates arm
11
Q
What are the main actions of the Dorsal interosseous muscles?
A
Abduct digits; flex digits at metacarpophalangeal joint and extend interphalangeal joints
12
Q
What are the main actions of the Extensor Carpi Radialis brevis muscle?
A
Extends and abducts hand at wrist
13
Q
What are the main actions of the Extensor Carpi Radialis Longus muscle?
A
Extends and abducts hand at wrist
14
Q
What are the main actions of the Extensor Carpi Ulnaris muscle?
A
Extends and adducts hand at wrist
15
Q
What are the main actions of the Extensor digiti minimi muscle?
A
Extends 5th digit
16
Q
What are the main actions of the Extensor digitorum muscle?
A
Extends medial four digits, assists in wrist extension
17
Q
What are the main actions of the Extensor indicis muscle?
A
Extends 2nd digit and helps extend hand at wrist
18
Q
What are the main actions of the Extensor pollicis brevis muscle?
A
Extends proximal phalanx of thumb at carpometacarpal joint
19
Q
What are the main actions of the Extensor pollicis longus muscle?
A
Extends distal phalanx of thumb at interphalangeal and metacarpophalangeal joints
20
Q
What are the main actions of the Flexor Carpi Radialis muscle?
A
Flexes and abducts hand at wrist
21
Q
What are the main actions of the Flexor Carpi Ulnaris muscle?
A
Flexes and adducts hand at wrist
22
Q
What are the main actions of the Flexor digiti minimi brevis muscle?
A
Flexes proximal phalanx of little finger
23
Q
What are the main actions of the Flexor digitorum profundus muscle?
A
Flexes distal phalangeal bones of medial four digits, assists with flexion of hand at wrist
24
Q
What are the main actions of the Flexor digitorum superficialis muscle?
A
Flexes middle and proximal phalangeal bones of medial four digits, flexes hand at wrist
25
What are the main actions of the Flexor pollicis brevis muscle?
Flexes proximal phalanx of thumb
26
What are the main actions of the Flexor pollicis longus muscle?
Flexes phalangeal bones of thumb
27
What are the main actions of the Infraspinatus muscle?
Lateral rotation of arm
28
What are the main actions of the Latissimus dorsi muscle?
Extends, adducts, and medially rotates humerus
29
What are the main actions of the Levator scapulae muscle?
Elevates scapula medially, inferiorly rotates glenoid fossa
30
What are the main actions of the Lumbricals (1st and 2nd) muscles?
Extend digits at interphalangeal joints, flex metacarpophalangeal joints
31
What are the main actions of the Lumbricals (3rd and 4th) muscles?
Extend digits at interphalangeal joints, flex metacarpophalangeal joints
32
What are the main actions of the Opponens digiti minimi muscle?
Draws 5th metacarpal anteriorly and rotates it to face thumb
33
What are the main actions of the Opponens pollicis muscle?
Draws 1st metacarpal forward and rotates it medially
34
What are the main actions of the Palmar brevis muscle?
Deepens hollow of hand, assists grip
35
What are the main actions of the Palmar interosseous muscle?
Adducts digits; flexes digits and extends interphalangeal joints
36
What are the main actions of the Palmar longus muscle?
Flexes hand at wrist and tenses palmar aponeurosis
37
What are the main actions of the Pectoralis major muscle?
Flexes, adducts, and medially rotates arm
38
What are the main actions of the Pectoralis minor muscle?
Lowers lateral angle of scapula and protracts scapula
39
What are the main actions of the Pronator Quadratus muscle?
Pronates forearm
40
What are the main actions of the Pronator Teres muscle?
Pronates forearm and weakly flexes elbow
41
What are the main actions of the Rhomboid major muscle?
Fixes scapula to thoracic wall and retracts and rotates it to depress glenoid cavity
42
What are the main actions of the Rhomboid minor muscle?
Fixes scapula to thoracic wall and retracts and rotates it to depress glenoid cavity
43
What are the main actions of the Serratus anterior muscle?
Protracts and rotates scapula and holds it against thoracic wall
44
What are the main actions of the Subclavius muscle?
Anchors and depresses clavicle
45
What are the main actions of the Subscapularis muscle?
Medially rotates and adducts arm; helps hold humeral head in glenoid fossa
46
What are the main actions of the Supinator muscle?
Supinates forearm
47
What are the main actions of the Supraspinatus muscle?
Initiates arm abduction
48
What are the main actions of the Teres major muscle?
Adducts and medially rotates arm
49
What are the main actions of the Teres minor muscle?
Laterally rotates arm
50
What are the main actions of the Trapezius muscle?
Elevates, retracts, and rotates scapula; lower fibers depress scapula
51
What are the main actions of the Triceps brachii muscle?
Extends forearm at elbow; long head stabilizes head of abducted humerus and extends and adducts arm
52
What arteries supply the Abductor digit minimi muscle?
Deep palmar branch of ulnar artery
53
What arteries supply the Abductor pollicis brevis muscle?
Superficial palmar branch of radial artery
54
What arteries supply the Abductor pollicis longus muscle?
Posterior interosseous artery
55
What arteries supply the Adductor pollicis muscle?
Deep palmar arch
56
What arteries supply the Anconeus muscle?
Deep brachial artery
57
What arteries supply the Biceps Brachii muscle?
Muscular branches of brachial artery
58
What arteries supply the Brachialis muscle?
Radial recurrent artery, muscular branches of brachial artery
59
What arteries supply the Brachioradialis muscle?
Radial recurrent artery
60
What arteries supply the Coracobrachialis muscle?
Muscular branches of brachial artery
61
What arteries supply the Deltoid muscle?
Posterior circumflex humeral artery, deltoid branch of thoracoacromial artery
62
What arteries supply the Dorsal interosseous muscle?
Deep palmar arch
63
What arteries supply the Extensor Carpi Radialis brevis muscle?
Radial artery, radial recurrent artery
64
What arteries supply the Extensor Carpi Radialis longus muscle?
Radial artery, Radial recurrent artery
65
What arteries supply the Extensor carpi ulnaris muscle?
Posterior interosseous artery
66
What arteries supply the Extensor digiti minimi muscle?
Posterior interosseous artery
67
What arteries supply the Extensor digitorum muscle?
Posterior interosseous artery
68
What arteries supply the Extensor indicis muscle?
Posterior interosseous artery
69
What arteries supply the Extensor pollicis brevis muscle?
Posterior interosseous artery
70
What arteries supply the Extensor pollicis longus muscle?
Posterior interosseous artery
71
What arteries supply the Flexor Carpi Radialis muscle?
Radial artery
72
What arteries supply the Flexor Carpi Ulnaris muscle?
Posterior ulnar recurrent artery
73
What arteries supply the Flexor digiti minimi brevis muscle?
Deep palmar branch of ulnar artery
74
What arteries supply the Flexor digitorum profundus muscle?
Anterior interosseous artery, muscular branches of ulnar artery
75
What arteries supply the Flexor digitorum superficialis muscle?
Ulnar and radial arteries
76
What arteries supply the Flexor pollicis brevis muscle?
Superficial palmar branch of radial artery
77
What arteries supply the Flexor pollicis longus muscle?
Anterior interosseous artery
78
What arteries supply the Infraspinatus muscle?
Suprascapular artery
79
What arteries supply the Latissimus dorsi muscle?
Thoracodorsal artery, dorsal perforating branches of 9th, 10th, and 11th posterior intercostal, subcostal, and first three lumbar arteries
80
What arteries supply the Levator Scapulae muscle?
Dorsal scapular artery, transverse cervical artery, ascending cervical artery
81
What arteries supply the Lumbricals (1st and 2nd) muscle?
Superficial and deep palmar arches
82
What arteries supply the Lumbricals (3rd and 4th) muscle?
Superficial and deep palmar arches
83
What arteries supply the Opponens digiti minimi muscle?
Deep palmar branch of ulnar artery
84
What arteries supply the Opponens pollicis muscle?
Superficial palmar branch of radial artery
85
What arteries supply the Palmar brevis muscle?
Superficial palmar arch
86
What arteries supply the Palmar interosseous muscle?
Deep palmar arch
87
What arteries supply the Palmar longus?
Posterior ulnar recurrent artery
88
What arteries supply the Pectoralis major muscle?
Pectoral branch of thoracoacromial artery, perforating branches of internal thoracic artery
89
What arteries supply the Pectoralis minor muscle?
Pectoral branch of thoracoacromial artery, and superior and lateral thoracic arteries
90
What arteries supply the Pronator Quadratus muscle?
Anterior interosseous artery
91
What arteries supply the Pronator teres muscle?
Anterior ulnar recurrent artery
92
What arteries supply the Rhomboid major muscle?
Dorsal scapular OR deep branch of transverse cervical artery, dorsal perforating branches of upper five or six posterior intercostal arteries
93
What arteries supply the Rhomboid minor muscle?
Dorsal scapular artery OR deep branch of transverse cervical artery, dorsal perforating branches of upper five or six posterior intercostal arteries
94
What arteries supply the Serratus anterior muscle?
Lateral thoracic artery
95
What arteries supply the Subclavius muscle?
Clavicular branch of thoracoacromial artery
96
What arteries supply the Subscapularis muscle?
Subscapular artery, lateral thoracic artery
97
What arteries supply the Supinator muscle?
Radial recurrent artery, posterior interosseous arteries
98
What arteries supply the Supraspinatus muscle?
Suprascapular artery
99
What arteries supply the Teres Major muscle?
Circumflex scapular artery
100
What arteries supply the Teres Minor muscle?
Circumflex scapular artery
101
What arteries supply the Trapezius muscle?
Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries
102
What arteries supply the Triceps brachii muscle?
Branch of profunda brachii artery
103
What nerve innervates 1st and 2nd Lumbricals?
Median nerve (digital branches)
104
What nerve innervates 3rd and 4th Lumbricals?
Ulnar Nerve (deep branch)
105
What nerve innervates Abductor digiti minimi?
Ulnar nerve (deep branch)
106
What nerve innervates Abductor pollicis brevis?
Median nerve (recurrent branch)
107
What nerve innervates Abductor pollicis longus?
Radial nerve (posterior interosseous)
108
What nerve innervates Adductor pollcicis?
Ulnar nerve (deep branch)
109
What nerve innervates Anconeus?
Radial Nerve
110
What nerve innervates Biceps brachii?
Musculocutaneous nerve
111
What nerve innervates Brachialis?
Musculocutaneous nerve and Radial nerve
112
What nerve innervates Brachioradialis?
Radial Nerve
113
What nerve innervates Coracobrachialis?
Musculocutaneous nerve
114
What nerve innervates Deltoid?
Axillary Nerve
115
What nerve innervates Dorsal interosseous muscles?
Ulnar nerve (deep branch)
116
What nerve innervates Extenser policis brevis?
Radial nerve (posterior interosseous nerve)
117
What nerve innervates Extenser policis longus?
Radial nerve (posterior interosseous nerve)
118
What nerve innervates Extensor Carpi Radialis Brevis?
Radial nerve (deep branch)
119
What nerve innervates Extensor carpi radialis longus?
Radial nerve
120
What nerve innervates Extensor carpi ulnaris?
Radial nerve (posterior interosseous nerve)
121
What nerve innervates Extensor digit minimi?
Radial nerve (posterior interosseous nerve)
122
What nerve innervates Extensor digitorum?
Radial nerve (posterior interosseous nerve)
123
What nerve innervates Extensor indicis?
Radial nerve (posterior interosseous nerve)
124
What nerve innervates Flexor carpi radialis?
Median nerve
125
What nerve innervates Flexor carpi ulnaris?
Ulnar nerve
126
What nerve innervates Flexor digiti minimi brevis?
Ulnar nerve (deep branch)
127
What nerve innervates Flexor digitorum profundus?
Medial: Ulnar nerve Lateral: Median nerve
128
What nerve innervates Flexor digitorum superficialis?
Median Nerve
129
What nerve innervates Flexor pollicis brevis?
Median nerve (recurrent branch)
130
What nerve innervates Flexor pollicis longus?
Median nerve (anterior interosseous nerve)
131
What nerve innervates Infraspinatus?
Suprascapular nerve
132
What nerve innervates Latissimus dorsi?
Thoracodorsal nerve
133
What nerve innervates Levator scapulae?
Anterior Rami of C3-C4 and dorsal scapular nerve
134
What nerve innervates Opponens digit minimi?
Ulnar nerve (deep branch)
135
What nerve innervates Opponens pollicis?
Median Nerve (recurrent branch)
136
What nerve innervates Palmar interosseous muscles?
Ulnar nerve (deep branch)
137
What nerve innervates Palmaris brevis?
Superficial branch of ulnar nerve
138
What nerve innervates Palmaris Longus?
Median Nerve
139
What nerve innervates Pectoralis major?
Medial and lateral pectoral nerves
140
What nerve innervates Pectoralis minor?
Medial pectoral nerve
141
What nerve innervates Pronator Quadratus?
Median Nerve (anterior interosseous nerve)
142
What nerve innervates Pronator Teres?
Median nerve
143
What nerve innervates Rhomboid major?
Dorsal scapular nerve
144
What nerve innervates Rhomboid minor?
Dorsal scapular nerve
145
What nerve innervates Seratus anterior?
Long thoracic nerve
146
What nerve innervates Subclavius?
Nerve to subclavius
147
What nerve innervates Subscapularis?
Upper and Lower Subscapularis nerves
148
What nerve innervates Supinator?
Radial nerve (deep branch)
149
What nerve innervates Supraspinatous?
Suprascapular nerve
150
What nerve innervates Teres Major?
Lower Subscapular nerve
151
What nerve innervates Teres Minor?
Axillary nerve
152
What nerve innervates the Triceps brachii?
Radial Nerve
153
What nerve innervates Trapezius?
Accessory nerve (cranial nerve XI)
