Muscles of Upper Limb Flashcards
1
Q
Innervation of Deltoid
A
Axillary nerve
2
Q
Innervation of Pectoralis Major
A
Lateral & medial pectoral nerves, from brachial plexus (branching off from lateral & medial cords)
3
Q
Innervation of Latissimus Dorsi
A
Thoracodorsal nerve, from brachial plexus (branching off from posterior cord)
4
Q
Innervation of Supraspinatus
A
Suprascapular nerve, from brachial plexus (C5 & C6, branching off from the superior trunk)
5
Q
Innervation of Infraspinatus
A
Suprascapular nerve, from the brachial plexus (C5 & C6, branching off from superior trunk)
6
Q
Innervation of Teres Major
A
Inferior subscapular nerve, from brachial plexus (branching off from posterior cord)
7
Q
Innervation of Teres Minor
A
Axillary nerve
8
Q
Innervation of Subscapularis
A
Superior & inferior subscapular nerves, from brachial plexus (branching off from posterior cord)
9
Q
Innervation of Serratus Anterior
A
Long thoracic nerve
10
Q
Innervation of Biceps Brachii
A
Musculocutaneous nerve
11
Q
Innervation of Coracobrachialis
A
Musculocutaneous nerve
12
Q
Innervation of Triceps Brachii
A
Radial nerve
13
Q
Innervation of Pectoralis Minor
A
Medial pectoral nerve
14
Q
Innervation of Levator Scapulae
A
Dorsal scapular nerve, C3 & C4
15
Q
Innervation of Rhomboid Major & Minor
A
Dorsal scapular nerve
16
Q
Innervation of Trapezius
A
Spinal root of accessory nerve, C3 & C4
17
Q
Innervation of Subclavius
A
Subclavian nerve (branching off from superior trunk)
18
Q
Innervation of Anconeus
A
Radial nerve
19
Q
Innervation of Brachioradialis
A
Radial nerve
20
Q
Innervation of Brachialis
A
Musculocutaneous nerve
21
Q
Innervation of Abductor Digiti Minimi
A
Deep branch of ulnar nerve
22
Q
Innervation of Abductor Pollicis Brevis
A
Median nerve (recurrent branch)
23
Q
Innervation of Abductor Pollicis Longus
A
Radial nerve (posterior interosseous)
24
Q
Innervation of Adductor Pollicis
A
Ulnar nerve (deep branch)
25
Innervation of Extensor Carpi Radialis Brevis
Radial nerve (deep branch)
26
Innervation of Extensor Carpi Radialis Longus
Radial nerve
27
Innervation of Extensor Carpi Ulnaris
Radial nerve (posterior interosseous)
28
Innervation of Extensor Digiti Minimi
Radial nerve (posterior interosseous)
29
Innervation of Extensor Digitorum
Radial nerve (posterior interosseous)
30
Innervation of Extensor Indicis
Radial nerve (posterior interosseous)
31
Innervation of Extensor Pollicis Brevis
Radial nerve (posterior interosseous)
32
Innervation of Extensor Pollicis Longus
Radial nerve (posterior interosseous)
33
Innervation of Flexor Carpi Radialis
Median nerve
34
Innervation of Flexor Carpi Ulnaris
Ulnar nerve
35
Innervation of Flexor Digitorum Profundus
Medial part: ulnar nerve
| Lateral part: median nerve
36
Innervation of Flexor Digitorum Superficialis
Median nerve
37
Innervation of Flexor Pollicis Brevis
Median nerve (recurrent branch)
38
Innervation of Flexor Pollicis Longus
Median nerve
39
Innervation of Dorsal Interosseous Muscles
Ulnar nerve (deep branch)
40
Innervation of Palmar Interosseous Muscles
Ulnar nerve (deep branch)
41
Innervation of Opponens Digiti Minimi
Ulnar nerve (deep branch)
42
Innervation of Opponens Pollicis
Median nerve (recurrent branch)
43
Innervation of Palmaris Longus
Median nerve
44
Innervation of Pronator Quadratus
Median nerve
45
Innervation of Pronator Teres
Median nerve
46
Innervation of Supinator
Radial nerve (deep branch)
47
Muscles innervated by Median nerve
Anterior Compartment of Forearm:
- Pronator Teres
- Flexor Carpi Radialis
- Palmaris Longus
- Flexor Digitorum Superficialis
- Flexor Digitorum Profundus (lateral half only)
- Pronator Quadratus
- Opponens Pollicis (recurrent branch)
- Flexors Pollicis Longus & Brevis (recurrent branch)
- Abductor Pollicis Brevis
48
Muscles innervated by Radial nerve
- Triceps Brachii
- Anconeus
- Brachioradialis
- Abductor Pollicis Longus
- Extensors Carpi Radialis Longus & Brevis
- Extensor Carpi Ulnaris
- Extensor Digiti Minimi
- Extensor Digitorum
- Extensor Indicis
- Extensors Pollicis Brevis & Longus
- Supinator
49
Muscles innervated by Ulnar nerve
- Adductor Pollicis (deep branch)
- Flexor Carpi Ulnaris
- Flexor Digitorum Profundus (medial half only)
- Dorsal & Palmer Interosseous nerves (deep branch)
- Opponens Digiti Minimi (deep branch)
- Extensor Digiti Minimi
- Flexor Digiti Minimi
50
Muscles innervated by Musculocutaneous nerve
- Biceps Brachii
- Coracobrachialis
- Brachialis
51
Action of Deltoid
Abductor of the arm
Lateral & medial rotation of the arm
Flexion & extension of the arm
52
Action of Infraspinatus
Lateral rotation of arm
53
Action of Latissimus Dorsi
Adduction of arm
Medial rotation
Extension at shoulder
54
Action of Pectoralis Major
Adduction of arm
Flexion
Medial rotation
55
Action of Serratus Anterior
Protraction & retraction of scapula
56
Action of Subscapularis
Medial rotation
57
Action of Supraspinatus
Abduction of arm
58
Action of Teres Major
Medial rotation of arm
| Adduction
59
Action of Teres Minor
Lateral rotation of arm
60
Action of Anconeus
Extend forearm
| Adduct arm
61
Action of Biceps Brachii
Flex the arm
Flex forearm
Supinate forearm
62
Action of Brachialis
Flex forearm
63
Action of Brachioradialis
Flex forearm
64
Action of Pronator Teres
Pronate forearm
65
Action of Supinator
Extend forearm
| Supinate forearm
66
Action of Triceps Brachii
Extend forearm
| Adduct arm
67
Action of Abductor Digiti Minimi
Abduct little finger
68
Action of Abductor Pollicis Brevis
Abduct thumb (helps opposition)
69
Action of Abductor Pollicis Longus
Abduct thumb
| Extend thumb at carpometacarpal joint
70
Action of Adductor Pollicis
Adduct thumb
| Rotate thumb medially
71
Action of Coracobrachialis
Helps flex & adduct arm
72
Action of Extensors Carpi Radialis Brevis & Longus
Extend & abduct hand at wrist joint
73
Action of Extensor Carpi Ulnaris
Extend & adduct hand at wrist joint
74
Action of Extensor Digiti Minimi
Extend little finger at metacarpo- & inter-phalangeal joints
75
Action of Extensor Digitorum
Extend the medial 4 fingers at metacarpophalangeal joints
| Extend hand at wrist joint
76
Action of Extensor Pollicis Brevis
Extend thumb at carpometacarpal joint
77
Action of Extensor Pollicis Longus
Extend thumb at carpometacarpal & interphalangeal joitns
78
Action of Flexors Carpi Radialis & Ulnaris
Flex & adduct hand at wrist
79
Action of Flexor Digiti Minimi Brevis
Flex proximal phalanx of little finger
80
Action of Flexor Digitorum Profundus
Flex distal phalanges of medial 4 fingers
| Assist with flexion of hand
81
Action of Flexor Digitorum Superficialis
Flex middle phalanges of medial 4 fingers
82
Action of Flexors Pollicis Brevis & Longus
Flex thumb
83
Action of Dorsal Interosseous Muscles
Action of Palmar Interosseous Muscles (digits 1-3)
PAD DAB
Abduct digits
Flex metacarpophalangeal joints (with lumbricals)
Extend interphalangeal joints
84
Action of Opponens Digiti Minimi
Helps with opposition of little finger to thumb (lateral rotation)
85
Action of Opponens Pollicis
Helps with opposition of little finger to thumb (medial rotation)
86
Action of Palmaris Longus
Flex hand at wrist
| Tense palmar aponeurosis
87
Muscles innervated by Dorsal Scapular nerve
- Levator Scapulae
| - Rhomboid Major & Minor
88
Muscles innervated by Axillary nerve
- Deltoid
| - Teres Minor
89
Innervation of Extensors Pollicis Longus & Brevis
Radial nerve
90
List of intrinsic muscles of the hand
```
Thenar muscles:
- abductor pollicis brevis
- flexor pollicis brevis
- opponens pollicis
Hypothenar muscles:
- abductor digiti minimi
- flexor digiti minimi
- opponens digiti minimi
Dorsal & Palmar Interosseous
Lumbricals
Adductor Pollicis
Palmaris Brevis
```
91
List of extrinsic muscles of the hand
```
Flexor Carpi Radialis
Palmaris Lungus
Flexor Carpi Ulnaris
Flexor Digitorum Superficialis
Flexor Digitorum Profundus
Flexor Pollicis Longus
```
```
Extensor Carpi Radialis Longus & Brevis
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
Abductor Pollicis Longus
Extensor Pollicis Longus & Brevis
Extensor Indicis
```
92
Origin & insertion of biceps brachii
1. Coracoid process. 2. Supraglenoid tubercle
Radial tuberosity
93
Origin & insertion of brachialis
Anterior shaft humerus
Coronoid process & tuberosity of ulna
94
Origin & insertion of triceps brachii
1. Infraglenoid tubercle. 2. Inferior 2/3 humerus. 3. Proximal posterior humerus
Olecranon
95
Origin & insertion of brachioradialis
Lateral supracondylar ridge
Styloid process radius
96
Origin & insertion of pronator teres
1. Medial epicondyle & supracondylar ridge. 2. Coronoid process
Middle lateral radius
97
Origin & insertion of supinator
Lateral epicondyle
