Muscles Flashcards
1
Q
Deltoid - insertion
A
Deltoid tuberosity
2
Q
Deltoid - action
A
All abduct the shoulder at glenohumeral joint Anterior - flexes shoulder at GH joint, medially roates shoulder at GH joint, and horizontaally adducts the shoulder at GH joint Posterior - Extends shoulder at GH joint, laterally rotates shoulder at GH joint, and horizontally adducts shoulder at GH joint
3
Q
Deltoid - nerve
A
Axillary C5 and C6
4
Q
Trapezius - origin
A
Occiput, ligamentum nuchae, and spinous processes C7 - T12
5
Q
Trapezius - insertion
A
lateral 1/3 of clavicle, acromion process, and spine of the scapula
6
Q
Trapezius - action
A
All extend the head and neck Upper - laterally flex head and neck to same side, rotate the head and neck to opposite side, elevate scapula Middle - adduct the scapula, stabilize the scapula Lower - depress the scapula, upwardly rotate the scapula
7
Q
Trapezius - nerve
A
Spinal portion of cranial nerve XI (accessory) and ventral ramus C2 - C4
8
Q
Latissiumus Dorsi - origin
A
inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest
9
Q
Latissimus Dorsi - insertion
A
Intertubercular groove of humerus
10
Q
Latissimus Dorsi - action
A
Extend the shoulder at GH joint, adduct the shoulder at GH joint, and medially rotate the shoulder at the GH joint
11
Q
Latissimus Dorsi - nerve
A
thoracodorsal C6 - C8
12
Q
Teres Major - origin
A
inferior angle and lower 1/3 lateral border of scapula
13
Q
Teres Major - insertion
A
crest of lesser tubercle of humerus
14
Q
Teres Major - Action
A
Extend shoulder at GH joint, adduct shoulder at GH joint, and medially rotate shoulder at GH joint
15
Q
Teres Major - nerve
A
lower subscapular C5 - C7
16
Q
What muscles are part of the Rotator Cuff Muscles
A
Supraspinatus Infraspinatus Teres Minor Subscapularis
17
Q
Supraspinatus - origin
A
Supraspinous fossa of the scapula
18
Q
Supraspinatus - insertion
A
Greater tubercle of humerus
19
Q
Supraspinatus - Action
A
Abduct the shoulder at GH joint. stabilize head of humerus in glenoid cavity
20
Q
Supraspinatus - nerve
A
Suprascapular C4 - C6
21
Q
Teres Minor - origin
A
Upper 2/3 of lateral border of scapula
22
Q
Teres Minor - insertion
A
Gerater tubercle of humerus
23
Q
Teres Minor - action
A
laterally rotate shoulder at GH joint, adduct shoulder at GH joint, stabilize head of humerus in glenoid cavity
24
Q
Teres Minor - nerve
A
Axillary C5 and C6
25
Infraspinatus - origin
infraspinous fossa of the scapula
26
Infraspinatus - insertion
Greater tubercle of humerus
27
Infraspinatus - action
laterally rotate shoulder at GH joint, adduct the shoulder at the GH joint, and stabilize head of humerus at glenoid cavity
28
Infraspinatus - nerve
Suprascapular C4 - C6
29
Subscapularis - origin
subscapular fossa of scapula
30
Subscapularis - insertion
Lesser tubercle of humerus
31
Suubscapularis - action
medially rotate shoulder at GH joint, Stabilize head of humerus
32
Subscapularis - nerve
upper and lower subscapular C5 - C7
33
Rhomboid Major - origin
Spinous processes of T2 - T5
34
Rhomboid Major - insertion
medial border of scapula b/w the spine of the scapula and the inferior angle
35
Rhomboid Major - action
adduct the scapula (scapulothoracic joint), Elevate the scapula at ST joint, downwardly rotate scapula at ST joint
36
Rhomboid Major - nerve
Dorsal scapular C4 and C5
37
Deltoid - origin
Anterior - lateral 1/3 of clavicle Lateral/middle - acromion Posterior - spine of scapula
38
Rhomboid Minor - origin
Spinous processes C7 - T1
39
Rhomboid Minor - insertion
upper portion of medial border of scapula across from the spine of the scapula
40
Rhomboid Minor - Action
Adduct scapula at ST joint, elevate scapula at ST joint, and downwardly rotate scapula at ST joint
41
Rhomboid minor - nerve
Dorsal scapular
42
Levator Scapula - origin
Transverse process of C1 - C4
43
Levator scapula - insertion
medial border of scapula, between superior angle and superior portion of spine of scapula
44
Levator scapula - action
elevate scapula at ST joint, downwardly rotate scapula at ST joint, laterally flex head and and neck, and rotate head and neck to the same side - bilaterally extend head and neck
45
Levator scapula - nerve
cervical C3 and C4 and Dorsal scapular C4 and C5
46
Serratus Anterior - origin
External surfaces of upper eight or nine ribs
47
Serratus Anterior - insertion
Anterior surface of medial border of the scapula
48
Serratus Anterior - action
with origin (ribs) fixed: Abduction of scapula at ST joint, upwardly rotate scapula at ST joint, depress scapula at ST joint, hold medial border of scapula against the rib cage with scapula fixed: may elevate border the thorax during forced inhalation
49
Serratus Anterior - nerve
long thoracic C5 - C8
50
Pectoralis Major - origin
medial 1/2 of clavicle, sternum and costal cartilage of ribs 1-6
51
Pectoralis Major - insertion
Crest of greater tubercle of humerus
52
Pectoralis Major - Action
All fibers: Adduct shoulder at GH joint, medially rotate at GH joint, and assist to elevate thorax during forced inhalation Upper fibers: Flex shoulder at GH joint, horizontally adduct shoulder at GH joint Lower fibers: Extend shoulder at GH joint
53
Pectoralis Major - nerve
Upper fibers: Lateral pectoral C5 - C7 Lower fibers: Lateral and medial pectoral C6 - T1
54
Pectoralis Minor - origin
3rd, 4th, and 5th ribs
55
Pectoralis minor - insertion
Medial surface of coracoid process of the scapula
56
Pectoralis Minor - action
Depress scapula at ST joint, abduct scapula at ST joint, downwardly rotate scapula at ST joint, may assist to elevate thorax during forced inhalation
57
Pectoralis Minor - nerve
Medial pectoral and lateral pectoral C6 - T1
58
Subclavius - origin
First rib and cartilage
59
Subclavius - insertion
inferior surface of middle 1/3 of clavicle
60
Subclavius - action
Depress clavicle and draw it anteriorly, elevate first rib (assist during inhalation), stabilize SC joint
61
Subclavius - nerve
subclavian C5 and C6
62
Biceps Brachii - origin short head
Short head: Coracoid process of scapula
63
Biceps Brachii - origin long head
Long head: Supraglenoid tubercle of scapula
64
Biceps Brachii - insertion
Radial tuberosity and bicipital aponeurosis
65
Biceps Brachii - action
Flex the elbow (humeroulnar joint), Supinate forearm (radioulnar joint), and flex shoulder (glenohumeral joint)
66
Biceps Brachii - nerve
musculocutaneous C5 and C6
67
Triceps Brachii - origin long head
Long head: infraglenoid tubercle of scapula
68
Triceps Brachii - origin lateral head
Lateral head: posterior surface of proximal half of humerus
69
Triceps Brachii - origin medial head
Medial head: posterior surface of distal half of humerus
70
Triceps Brachii - insertion
olecranon process of ulna
71
Triceps Brachii - action
All: extend the elbow (humeroulnar joint) Long head: Extend shoulder (glenohumeral joint), adduct shoulder GH joint
72
Triceps Brachii - nerve
Radial C6 - T1
73
coracobrachialis - origin
coracoid process of scapula
74
Coracobrachialis - insertion
medial surface of mid-humeral shaft
75
Coracobrachialis - action
Flex shoulder at GH joint, adduct shoulder at GH joint
76
Coracobrachialis - nerve
musculocutaneous C6 and C7
77
Brachialis - origin
distal half of anterior surface of humerus
78
Brachialis - insertion
tuberosity and coronoid process of ulna
79
Brachialis - action
Flex elbow (humeroulnar joint)
80
Brachialis - nerve
musculocutaneous, branch from radial C5 and C6
81
Brachioradials - origin
proximal 2/3 of lateral supracondylar ridge of humerus
82
Brachioradialis - insertion
styloid process of radius
83
Brachioradialis - action
Flex elbow (humeroulnar joint), assist pronation and supination when there is resistance
84
Brachioradialis - nerve
Radial C5 and C6
85
Extensor Carpi Radialis Longus - origin
Distal 1/3 of lateral supracondylar ridge of humerus
86
Extensor Carpi Radialis Longus - insertion
Base of 2nd metacarpal
87
Extensor Carpi Radialis Longus - action
Extend wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)
88
Extensor Carpi Radialis Longus - nerve
Radial C5 - C8
89
Extensor Carpi Radialis Brevis - origin
Common extensor tendon from lateral epicondyle of humerus
90
Extensor Carpi Radialis Brevis - insertion
Base of 3rd metacarpal
91
Extensor Carpi Radialis Brevis - action
extend wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)
92
Extensor Carpi Radialis Brevis - nerve
Radial C6 - C8
93
Extensor Carpi Ulnaris - origin
Common extensor tendon of lateral epicondyle of humerus
94
Extensor Carpi Ulnaris - insertion
Base of 5th metacarpal
95
Extensor Carpi Ulnaris - action
Extend wrist (radiocarpal joint), adduct wrist (radiocarpal joint)
96
Extensor Carpi Ulnaris - nerve
Radial C6 - C8
97
Extensor Digitorum - origin
Common extensor tendon from the lateral epicondyle of humerus
98
Extensor Digitorum - insertion
Bases of middle and and distal phalanges of 2nd - 5th fingers
99
Extensor Digitorum - action
Extend 2nd - 5th fingers and assist extension of wrist (radiocarpal joint)
100
Extensor Digitorum - nerve
Radial C6 - C8
101
Anconeus - origin
lateral epicondyle of humerus
102
Anconeus - insertion
Olecranon process and posterior, proximal surface of ulna
103
Anconeus - action
extend elbow (humeroulnar joint)
104
Anconeus - nerve
Radial C7 and C8
105
Extensor Indicis - origin
Posterior surface of distal shaft of ulna and interosseous membrane
106
Extensor Indicis - insertion
Tendon of extensor digitorum at 2nd metacarpal
107
Extensor Indicis - action
extend 2nd finger (metacarpophalangeal joint), adduct 2nd finger, and may assit extension of wrist (radiocarpal joint)
108
Extensor Indicis - nerve
Radial C6 - C8
109
Flexor Carpi Radialis - origin
Common flexor tendon from medial epicondyle of humerus
110
Flexor Carpi Radialis - insertion
Bases of 2nd and 3rd metacarpals
111
Flexor Carpi Radialis - action
flex wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)
112
Flexor Carpi Radialis - nerve
Median C6 - C8
113
Palmaris Longus - origin
Common flexor tendon medial epicondyle of humerus
114
Palmaris Longus - insertion
Flexor retinaculum and palmar aponeurosis
115
Palmaris Longus - action
Tense palmar fascia, flex wrist (radiocarpal joint), assist flexion of elbow
116
Palmaris Longus - nerve
Median C6 - T1
117
Flexor Carpi Ulnaris - origin
Humeral head: common flexor tendon medial epicondyle of humerus Ulnar head: Posterior surface of proximal 2/3 of ulna
118
Flexor Carpi Ulnaris - insertion
Pisiform, hook of the hamate and base of 5th metacarpal
119
Flexor Carpi Ulnaris - action
Flex wrist, adduct wrist, assist flexion of elbow
120
Flexor Digitorum Superficialis - origin
Common flexor tendon medial epicondyle of humerus, ulnar collateral ligament, coronoid process of ulna, interosseous membrane and proximal shaft of radius
121
Flexor Digitorum Superficialis - insertion
sides of middle phalanges of 2nd - 5th fingers
122
Flexor Digitorum Superficialis - action
flex 2nd - 5th fingers and flex wrist
123
Flexor Digitorum Superficialis - nerve
Median C7 - T1
124
Flexor Digitorum Profundus - origin
Anterior and medial surfaces of proximal 3/4 of ulna
125
Flexor Digitorum Profundus - insertion
Bases of distal phalanges, palmar surface of 2nd - 5th fingers
126
Flexor Digitorum Profundus - action
flex 2nd - 5th fingers and assist flexion of wrist
127
Flexor Digitorum Profundus - nerve
1st and 2nd - Median C7 - T1 3rd and 4th - Ulnar C7 - T1
128
Pronator Teres - origin
Common flexor tendon medial epicondyle of humerus and coronoid process of ulna
129
Pronator Teres - insertion
Middle of lateral surface of the radius
130
Pronator Teres - action
Pronate forearm and assist flexion of elbow
131
Pronator Teres - nerve
Median C6 and C7
132
Pronator Quadratus - origin
medial, anterior surface of distal ulna
133
Pronator Quadratus - insertion
lateral, anterior surface of distal radius
134
Pronator quadratus - action
pronate forearm
135
Pronator Quadratus - nerve
Median C7 - T1
136
Supinator - origin
lateral epicondyle of humerus, radial collateral ligament, annular ligament and supinator crest of ulna
137
Supinator - insertion
Anterior, lateral surface of proximal 1/3 of radial shaft
138
Supinator - action
supinate forearm
139
Supinator - nerve
radial C5 - C7
