Unit 2 Flashcards
(151 cards)
0
Q
Deltoid innervation
A
Axillary nerve (C5, C6)
1
Q
Deltoid insertion
A
Deltoid tuberosity of humerus
2
Q
Deltoid action
A
Clavicular (anterior) part flexes and medially rotates shoulder joint
Acromial (middle) part abducts shoulder joint
Spinal (posterior) part extends and laterally rotates shoulder joint
3
Q
Supraspinatus origin
A
Supraspinous fossa of scapula
4
Q
Supraspinatus insertion
A
Superior facet of greater tubercle of humerus
5
Q
Supraspinatus innervation
A
Suprascapular nerve (C4,C5,C6)
6
Q
Supraspinatus action
A
Initiates and assists deltoid in abduction of shoulder joint and acts with other rotator cuff muscles
7
Q
Infraspinatus origin
A
Infraspinous fossa of scapula
8
Q
Infraspinatus insertion
A
Middle facet of greater tubercle of humerus
9
Q
Infraspinatus innervation
A
Suprascapular nerve (C5,C6)
10
Q
Infraspinatus action
A
Laterally rotate shoulder joint
Help hold humeral head in glenoid cavity of scapula
11
Q
Teres minor origin
A
Middle part of lateral border of scapula
12
Q
Teres minor insertion
A
Inferior facet of greater tubercle of humerus
13
Q
Teres minor innervation
A
Axillary nerve (C5,C6)
14
Q
Teres minor action
A
Laterally rotate shoulder joint
Help hold humeral head in glenoid cavity of scapula
15
Q
Teres major origin
A
Inferior part of lateral border of scapula and posterior surface of inferior angle of scapula
16
Q
Teres major insertion
A
Medial lip of intertubercular sulcus of humerus
17
Q
Teres major innervation
A
Lower subscapular nerve (C5, C6)
18
Q
Teres major action
A
Adducts and medially rotates shoulder joint
19
Q
Subscapularis origin
A
Subscapular fossa (most of anterior surface of scapula)
20
Q
Subscapularis insertion
A
Lesser tubercle of humerus
21
Q
Subscapularis innervation
A
Upper and lower subscapular nerves (C5, C6, C7)
22
Q
Subscapularis action
A
Medially rotates and adducts shoulder joint
Helps hold humerus head in glenoid cavity
23
Q
Infraspinatus arterial supply
A
Suprascapular artery
24
Supraspinatus arterial supply
Suprascapular artery
25
Deltoid arterial supply
Posterior circumflex artery
26
Inferior border of Quadrangular space
Teres Major
27
Superior border of Quadrangular Space
Teres Minor
28
Medial border of Quadrangular Space
Long head of Triceps Brachii
29
Lateral border of the Quadrangular Space
Surgical neck of Humerus
30
Contents of Quandrangular Space
Axillary nerve
| Posterior humeral circumflex artery
31
Lateral border of the Triceps Hiatus
Humerus
32
Medial border of the Triceps Hiatus
Long head of triceps brachii
33
superior border of the triceps hiatus
Teres Major
34
Contents of the triceps hiatus
Deep artery of arm
| Radial nerve
35
Pectoralis Major origin
clavicular head: anterior surface of medial half of clavicle
| sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle
36
Pectoralis Major insertion
Lateral lip of intertubercular sulcus (groove) of humerus
37
Pectoralis Major innervation
```
lateral and medial pectoral nerves
clavicular head (C5, C6)
sternocostal head (C7, C8, T1)
```
38
Pectoralis Major Action
adducts and medially rotates shoulder joint, draws scapula anteriorly and inferiorly
acting alone, clavicular head flexes shoulder joint and sternocostal head extends it form the flexed position
39
Pectoralis minor origin
3rd-5th ribs near costal cartilages
40
Pectoralis minor insertion
medial border and superior surface of coracoid process of scapula
41
Pectoralis Minor innervation
medial pectoral nerve (C8, T1)
42
Pectoralis minor action
stabilizes scapula by drawing inferiorly and anteriorly against thoracic wall
43
Subclavius origin
junction of the 1st rib and its costal cartilage
44
subclavius insertion
inferior surface of middle 3rd of clavicle
45
Subclavius innervation
Subclavian nerve (C5, C6)
46
Subcalvius action
Anchors and depresses clavicle
47
Serratus anterior origin
external surfaces of lateral parts of 1st-8th ribs
48
Serratus anterior insertion
anterior surface of medial border of scapula
49
Serratus anterior innervation
Long thoracic nerve (C5, C6, C7)
50
Serratus anterior action
Protracts scapula and holds against thoracic wall
| rotates scapula
51
Biceps Brachii origin
short head: tip of coracoid process of scapula
| Long head: supraglenoid tubercle of scapula
52
Biceps Brachii insertion
tuberosity of radius and fascia of forearm via bicipital aponeurosis
53
biceps brachii innervation
musculocutaneous nerve (C5, C6)
54
Biceps Brachii action
supinates forearm and when it is supinated, flexes elbow joint
flexes shoulder joint
short head resists dislocation of shoulder
55
Brachialis origin
distal half of the anterior surface of humerus
56
brachialis insertion
coronoid process
| tuberosity of ulna
57
Brachialis innervation
musculocutaneous nerve (C5, C6, C7)
58
Brachialis action
flexes elbow joint in all positions
59
Coracobrachialis origin
tip of coracoid process
60
coracobrachialis insertion
middle 3rd of medial surface of humerus
61
corocobrachialis action
helps flex and adduct should joint
| resists dislocation of shoulder
62
Triceps Brachii origin
Long Head: infragleniod tubercle of scapula
Lateral head: posterior surface of humerus, superior to radial groove
medial head: posterior surface of humerus, inferior to radial groove
63
Triceps Brachii insertion
proximal end of olecranon of ulna and fascia of forearm
64
Triceps Brachii innervation
radial nerve (C6, C7, C8)
65
Triceps Brachii action
chief extensor of elbow joint
| long head extends shoulder joint and resist dislocation of humerus
66
Pectoralis major arterial supply
Pectoral branch of thoracoacromial trunk
67
Pectoralis minor arterial supply
pectoral branch of thoracoacromial trunk
68
serratus anterior arterial supply
lateral thoracic
69
subclavius arterial supply
clavicular branch of thoracoacromial trunk
70
deltoid arterial supply
posterior circumflex of humerus
71
biceps brachii arterial supply
brachial artery
72
coracobrachialis arterial supply
brachial artery
73
triceps brachii arterial supply
deep brachial artery
74
brachialis arterial supply
brachial artery
75
Brachioradialis origin
proximal 2/3 of lateral supraepicondylar ridge of humerus
76
brachioradialis insertion
lateral surface of distal end of radius proximal to styloid process
77
brachioradialis innervation
radial nerve (C5, C6, C7)
78
Brachioradialis action
relatively weak flexion of elbow joint, maximal when forearm is in midpronated position
79
Extensor Carpi Radialis Longus origin
lateral supra-epicondylar ridge of humerus
80
Extensor Carpi Radialis Longus insertion
dorsal aspect of base of 2nd metacarpal
81
Extensor Carpi Radialis Longus innervation
radial nerve (C6, C7)
82
Extensor Carpi Radialis Longus action
extend and abduct wrist joint
83
Extensor Carpi Radialis Brevis origin
lateral epicondyle of humerus (common extensor origin)
84
Extensor Carpi Radialis Brevis insertion
dorsal aspect of base of 3rd metacarpal
85
Extensor Carpi Radialis Brevis innervation
deep branch of radial nerve (C7, C8)
86
Extensor Carpi Radialis Brevis action
Extend or abduct wrist joint
| active during fist clenching
87
extensor digitorum origin
lateral epicondyle of humerus (common extensor origin)
88
extensor digitorum insertion
extensor expansions of medial four fingers
89
extensor digitorum innervation
posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve
90
extensor digitorum action
extend wrist joint
| extend medial four fingers primarily at metacarpophalageal joint
91
Extensor digiti minimi origin
lateral epicondyle of humerus (common extensor origin)
92
extensor digiti minimi insertion
extensor expansion of 5th finger
93
extensor digiti minimi innervation
posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve
94
extensor digiti minimi action
extends wrist
| extends 5th finger primarily at metacarpophalangeal joint
95
extensor carpi ulnaris origin
lateral epicondyle of humerus
| posterior border of ulna via a shared aponeurosis
96
extensor carpi ulnaris insertion
dorsal aspect of base of 5th metacarpal
97
extensor carpi ulnaris innervation
Posterior interosseous nerve (C7, C8), continuation of a deep branch of radial nerve
98
extensor carpi ulnaris action
extends and adducts wrist joint
99
supinator origin
lateral epicondyle of humerus
radial collateral and anular ligaments
supinator fossa
crest of ulna
100
supinator insertion
lateral, posterior, and anterior surfaces of proximal 3rd of radius
101
supinator innervation
deep branch of radial nerve (C7, C8)
102
supinator action
supinates forearm
| rotates radius to turn palm anteriorly or superiorly (if elbow is flexed)
103
abductor pollicis longus origin
posterior surface of proximal halves of ulna, radius, and interoseous membrane
104
abductor pollicis longus insertion
base of 1st metacarpal
105
abductor pollicis longus innervation
posterior interosseous nerve (C7, C8) continuation of deep branch of radial nerve
106
abductor pollicis longus action
extends wrist joint
| abducts thumb and extends it at carpometacarpal joint
107
Extensor pollicis longus origin
posterior surface of middle 3rd of ulna and interosseous membrane
108
extensor pollicis longus insertion
dorsal aspect of base of distal phalanx of thumb
109
extensor pollicis longus innervation
posterior interosseous nerve (C7, C8) continuation of deep branch of radial nerve
110
extensor pollicis longus action
extends wrist joint
extends distal phalanx of thumb at interphalangeal joint
extends metacarpophalangeal and carpometacarpal joints
111
extensor pollicis brevis origin
posterior surface of distal 3rd of radius and interosseous membrane
112
extensor pollicis brevis insertion
dorsal aspect of base of proximal phalanx of thumb
113
extensor pollicis brevis innervation
posterior interosseous nerve (C7, C8) continuation of deep branch of radial nerve
114
extensor pollicis brevis action
extends wrist joint
extends proximal phalanx of thumb at metacarpophalangeal joint
extends carpometacarpal joint
115
extensor indicis origin
posterior surface of distal 3rd of ulna and interosseous membrane
116
extensor indicis insertion
extensor expansion of 2nd finger
117
extensor indicis innervation
posterior interosseous nerve (C7, C8) continuation of deep branch of radial nerve
118
extensor indicis action
extends wrist joint
extends 2nd finger
helps extend hand at wrist
119
pronator teres origin
Ulnar head: coronoid process of ulna
| Humeral head: medial epicondyle of humerus
120
Pronator Teres Insertion
Middle of convexity of lateral surface of radius
121
Pronator Teres Innervation
Median Nerve (C6, C7)
122
Pronator Teres Action
pronates and flexes forearm
123
Flexor Carpi Radialis origin
medial epicondyle of humerus
124
Flexor carpi radialis insertion
base of 2nd (3rd) metacarpal
125
flexor carpi radialis innervation
median nerve (C6, C7)
126
Flexor carpi radialis action
flexes and abducts hand at wrist
127
Palmaris longus origin
medial epicondyle of the humerus
128
palmaris longus insertion
distal half of flexor retinaculum
| palmar aponeurosis
129
palmaris longus innervation
median nerve (C7, C8)
130
Palmaris longus action
flexes hand (at wrist) and tenses palmar aponeurosis
131
Flexor Carpi Ulnaris origin
olecranon and posterior border of ulna (via aponeurosis)
132
Flexor carpi ulnaris insertion
pisiform, hook of hamate, 5th metacarpal
133
flexor carpi ulnaris innervation
ulnar nerve (C7, C8)
134
Flexor carpi ulnaris action
flexes and adducts hand at wrist
135
flexor digitorum superficialis origin
humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial head: oblique line of radius
136
flexor digitorum superficialis insertion
shafts (bodies) of middle phalanges of medial four digits
137
flexor digitorum superficialis innervation
median nerve (C7, C8, T1)
138
flexor digitorum superficialis action
flexes wrist joint
flexes proximal interphalangeal joints of middle four digits
flexes proximal phalanges at metacarpophalangeal joints
139
Flexor digitorum profundus origin
proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
140
Flexor digitorum profundus insertion
bases of distal phalanges of 2nd, 3rd, 4th, and 5th digits
141
Flexor Digitorum Profundus innervation
```
lateral part (to digits 2 & 3): median nerve (C8, T1) (anterior interosseous branch)
Medial part (to digits 4 & 5): ulnar nerve (C8, T1)
```
142
Flexor digitorum profundus action
flexes wrist joint
flexes distal interphalangeal joints of digits 2, 3, 4, and 5
assists with wrist flexion
143
Flexor pollicis longus origin
anterior surface of radius and adjacent interosseous membrane
144
Flexor pollicis longus insertion
base of distal phalanx of thumb
145
flexor pollicis longus innervation
anterior interosseous nerve, from median nerve (C8, T1)
146
flexor pollicis longus action
flexes wrist
| flexes metacarpophalangeal and interphalangeal joints of thumb
147
pronator quadratus origin
distal quarter of anterior surface of ulna
148
pronator quadratus insertion
distal quarter of anterior surface of radius
149
pronator quadratus innervation
anterior interosseous nerve, from median nerve (C8, T1)
150
pronator quadratus action
pronates forearm
| deep fibers bind radius and ulna together
