Anatomy- OAIN Upper Flashcards
(196 cards)
1
Q
Pectoralis Major- Origin
A
1) clavicular portion- clavicle
2) sternal-costal portion- sternum and upper ribs
3) abdominal portion- tendon of external oblique muscle
2
Q
Pectoralis Major- Insertion
A
greater tubercle- intertubercular groove/humerus
3
Q
Pectoralis Major- Action
A
1) entire muscle- adduction and medial rotation of humerus (medial rotation against resistance)
2) entire muscle- forced inspiration by elevating the rib cage when humerus is fixed
3) clavicular portion- flexes humerus at shoulder joint
4) sternocostal portion- extends humerus at shoulder joint (when humerus is in a flexed position)
4
Q
Pectoralis Major- Nerve
A
Medial Pectoral Nerve
Lateral Pectoral Nerve
5
Q
Pectoralis Minor- Origin
A
upper ribs
6
Q
Pectoralis Minor- Insertion
A
coracoid process/scapula
7
Q
Pectoralis Minor- Action
A
1) involved with protraction/abduction of scapula
2) elevates ribcage and this involved with forced inspiration
8
Q
Pectoralis Minor- Nerve
A
Medial Pectoral Nerve
9
Q
Subclavian- Origin
A
first rib
10
Q
Subclavian- Insertion
A
subclavian groove/clavicle
11
Q
Subclavian- Action
A
1) moves clavicle medially
2) acts as a protective cushion between clavicle and subclavian vessels
12
Q
Subclavian- Nerve
A
Nerve to the Subclavius
13
Q
Trapezius- Origin
A
1) superior nuchel line/occiput
2) external occipital protuberance
3) ligamentum nuchae
4) spines of the thoracic vertebrae
14
Q
Trapezius- Insertion
A
1) clavicle
2) acromion process and spine/scapula
15
Q
Trapezius- Action
A
1) stabilizes the scapula (holds it in normal anatomical position)
2) upper portion- elevates scapula
3) middle and lower portions- adduct/retract scapula
16
Q
Trapezius- Nerve
A
Motor- Spinal Accessory Nerve (Cranial Nerve XI)
Sensory- C4 and C5
17
Q
Rhomboid Major- Origin
A
spine/upper thoracics
18
Q
Rhomboid Major- Insertion
A
vertebral border/scapula
19
Q
Rhomboid Major- Action
A
1) elevate and adduct/retract scapula
2) helps stabilize scapula
20
Q
Rhomboid Major- Nerve
A
Dorsal Scapular Nerve
21
Q
Rhomboid Minor- Origin
A
spine/lower cervical and T1
22
Q
Rhomboid Minor- Insertion
A
vertebral border/scapula
23
Q
Rhomboid Minor- Action
A
1) elevate and adduct/retract scapula
2) helps stabilize scapula
24
Q
Rhomboid Minor- Nerve
A
Dorsal Scapular Nerve
25
Levator Scapula- Origin
transverse processes/upper cervical vertebrae
26
Levator Scapula- Insertion
superior angle/scapula
27
Levator Scapula- Action
1) elevate scapula
2) adduct/retract scapula
3) stabilize scapula
28
Levator Scapula- Nerve
Dorsal Scapular Nerve
29
Latissimus Dorsi- Origin
1) spines/lower thoracic and lumbar vertebrae
2) thoracodorsal fascia
3) crest of the ilium
30
Latissimus Dorsi- Insertion
intertubercular groove (lesser tubercle)
31
Latissimus Dorsi- Action
1) extend, adduct and medially rotate the humerus
| 2) involved with forced expiration
32
Latissimus Dorsi- Nerve
Thoracodorsal Nerve
33
Serratus Anterior- Origin
upper ribs
34
Serratus Anterior- Insertion
vertebral border/scapula
35
Serratus Anterior- Action
1) abduction/protraction of scapula
2) stabilizes the scapula
3) involved with forced inspiration (only when humerus is abducted)
36
Serratus Anterior- Nerve
Long Thoracic
37
Deltoid- Origin
1) anterior/clavicular portion- clavicle
2) middle/acromial portion- acromion process of scpula
3) posterior portion- spinous process of scapula
38
Deltoid- Insertion
deltoid tuberosity/humerus
39
Deltoid- Action
1) anterior portion- flex and medially rotate arm
2) middle portion- abducts arm
3) posterior portion- extend and laterally rotate arm
40
Deltoid- Nerve
Axillary Nerve
41
Supraspinatus- Origin
supraspinous fossa/scapula
42
Supraspinatus- Insertion
greater tuberosity/humerus
43
Supraspinatus- Action
1) initiates abduction of arm
2) helps laterally rotate humerus
3) helps stabilize shoulder joint
44
Supraspinatus- Nerve
Suprascapular Nerve
45
Infraspinatus- Origin
infraspinous fossa/scapula
46
Infraspinatus- Insertion
greater tuberosity/humerus
47
Infraspinatus- Action
1) laterally rotates humerus
| 2) stabilizes shoulder joint
48
Infraspinatus- Nerve
Suprascapular Nerve
49
Subscapularis- Origin
subscapular fossa/scapula
50
Subscapularis- Insertion
lesser tuberosity/humerus
51
Subscapularis- Action
1) medially rotates humerus
| 2) stabilizes shoulder joint
52
Subscapularis- Nerve
Upper Subscapular Nerve
| Lower Subscapular Nerve
53
Teres Major- Origin
inferior angle/scapula
54
Teres Major- Insertion
intertubercular groove (lesser tuberosity)
55
Teres Major- Action
1) adducts humerus
2) stabilizes shoulder joint
3) medially rotates humerus
56
Teres Major- Nerve
Lower Subscapular Nerve
57
Teres Minor- Origin
axillary border/scapula
58
Teres Minor- Insertion
greater tuberosity/humerus
59
Teres Minor- Action
1) laterally rotates humerus
| 2) stabilizes shoulder joint
60
Teres Minor- Nerve
Axillary Nerve
61
Biceps Brachii- Origin
1) short head- coracoid process of scapula
| 2) long head- supraglenoid tubercle/scapula
62
Biceps Brachii- Insertion
1) tubersoity/radius
| 2) shaft/ulna
63
Biceps Brachii- Action
flexion of forearm, supinates the radius (prime mover)
64
Biceps Brachii- Nerve
Musculocutaneous Nerve
65
Coracobrachialis- Origin
coracoid process/scapula
66
Coracobrachialis- Insertion
shaft/humerus
67
Coracobrachialis- Action
1) flexion and weak adduction of arm (shoulder joint)
| 2) stabilizes shoulder joint
68
Coracobrachialis- Nerve
Musculocutaneous Nerve
69
Brachialis- Origin
shaft/humerus
70
Brachialis- Insertion
coronoid process/ulna
71
Brachialis- Action
flexes forearm (equal prime mover)
72
Brachialis- Nerve
Musculocutaneous Nerve
73
Triceps Brachii- Origin
1) long head- infraglenoid tubercle/scapula
2) lateral head- shaft/humerus
3) medial head- shaft/humerus
74
Triceps Brachii- Insertion
olecranon process/ulna
75
Triceps Brachii- Action
extension of forearm
76
Triceps Brachii- Nerve
Radial Nerve
77
Pronator Teres- Origin
1) medial epicondyle/humerus
| 2) coronoid process/ulna
78
Pronator Teres- Insertion
pronator ridge/radius
79
Pronator Teres- Action
1) pronates forearm at superior radioulnar joint
| 2) assists flexion at elbow joint
80
Pronator Teres- Nerve
Median Nerve
81
Flexor Carpi Radialis- Origin
medial epicondyle/humerus
82
Flexor Carpi Radialis- Insertion
2nd metacarpal with small slip to 3rd metacarpal
83
Flexor Carpi Radialis- Action
1) equal prime mover for flexion of hand at wrist joint
| 2) assists in abduction of hand
84
Flexor Carpi Radialis- Nerve
Median Nerve
85
Palmaris Longus- Origin
medial epicondyle/humerus
86
Palmaris Longus- Insertion
palmar aponeurosis
87
Palmaris Longus- Action
1) helps hand flex
| 2) tightens fascia of palm/helps with palmar grip
88
Palmaris Longus- Nerve
Median Nerve
89
Flexor Carpi Ulnaris- Origin
1) medial epicondyle/humerus
| 2) olecranon process ulna
90
Flexor Carpi Ulnaris- Insertion
1) pisiform
2) hamate
3) 5th metacarpal
91
Flexor Carpi Ulnaris- Action
1) equal prime mover for flexion of hand (at wrist joint)
| 2) adducts hand
92
Flexor Carpi Ulnaris- Nerve
Ulnar Nerve
93
Flexor Digitorum Superficialis- Origin
medial epicondyle/humerus
94
Flexor Digitorum Superficialis- Insertion
middle phalanges/digits 2-5
95
Flexor Digitorum Superficialis- Action
1) flexes the PIP joints of digits 2-5
| 2) helps flex hand
96
Flexor Digitorum Superficialis- Nerve
Median Nerve
97
Flexor Digitorum Profundus- Origin
shaft/ulna
98
Flexor Digitorum Profundus- Insertion
distal phalanges/digits 2-5
99
Flexor Digitorum Profundus- Action
1) flexes the DIP joints of digits 2-5
| 2) helps flex hand
100
Flexor Digitorum Profundus- Nerve
Ulnar Nerve
| Median Nerve
101
Flexor Pollicis Longus- Origin
shaft/radius
102
Flexor Pollicis Longus- Insertion
distal phalanx/digit 1
103
Flexor Pollicis Longus- Action
flexes the thumb (digit 1) at IP joint
104
Flexor Pollicis Longus- Nerve
Median Nerve
105
Pronator Quadratus- Origin
shaft/ulna
106
Pronator Quadratus- Insertion
shaft/radius
107
Pronator Quadratus- Action
1) pronation of forearm at the inferior radioulnar joint
| 2) helps stabilize the inferior radioulnar joint
108
Pronator Quadratus- Nerve
Median Nerve
109
Brachioradialis- Origin
lateral supracondylar ridge/humerus
110
Brachioradialis- Insertion
styloid process/radius
111
Brachioradialis- Action
1) helps flex forearm
| 2) pronates and supinates the forearm
112
Brachioradialis- Nerve
Radial Nerve
113
Extensor Carpi Radialis Longus- Origin
lateral epicondyle/humerus
114
Extensor Carpi Radialis Longus- Insertion
2nd metacarpal
115
Extensor Carpi Radialis Longus- Action
1) extend the hand
| 2) abduct the hand
116
Extensor Carpi Radialis Longus- Nerve
Radial Nerve
117
Extensor Carpi Radialis Brevis- Origin
lateral epicondyle/humerus
118
Extensor Carpi Radialis Brevis- Insertion
3rd metacarpal
119
Extensor Carpi Radialis Brevis- Action
1) extend the hand
| 2) abduct the hand
120
Extensor Carpi Radialis Brevis- Nerve
Radial Nerve
121
Extensor Digitorum Maximus- Origin
lateral epicondyle/humerus
122
Extensor Digitorum Maximus- Insertion
middle phalanx/digits 2-5
123
Extensor Digitorum Maximus- Action
1) extend digits 2-5
2) extend hand
3) abducts digits 2, 4, 5
124
Extensor Digitorum Maximus- Nerve
Radial Nerve
125
Extensor Digiti Minimi- Origin
lateral epicondyle/humerus
126
Extensor Digiti Minimi- Insertion
proximal phalanx/digit 5
127
Extensor Digiti Minimi- Action
extend digit 5 (little finger)
128
Extensor Digiti Minimi- Nerve
Radial Nerve
129
Extensor Carpi Ulnaris- Origin
lateral epicondyle/humerus
130
Extensor Carpi Ulnaris- Insertion
5th metacarpal
131
Extensor Carpi Ulnaris- Action
1) extend hand
| 2) help adduct hand
132
Extensor Carpi Ulnaris- Nerve
Radial Nerve
133
Supinator- Origin
1) lateral epicondyle/humerus
| 2) supinator crest/ulna
134
Supinator- Insertion
shaft/radius
135
Supinator- Action
supinates forearm
136
Supinator- Nerve
Radial Nerve
137
Abductor Pollicis Longus- Origin
shaft/ulna and radius
138
Abductor Pollicis Longus- Insertion
1st metacarpal
139
Abductor Pollicis Longus- Action
abducts digit 1 at CM joint
140
Abductor Pollicis Longus- Nerve
Radial Nerve
141
Extensor Pollicis Brevis- Origin
shalf/radius
142
Extensor Pollicis Brevis- Insertion
proximal phalanx/digit 1
143
Extensor Pollicis Brevis- Action
extends digit 1 at MP joint
144
Extensor Pollicis Brevis- Nerve
Radial Nerve
145
Extensor Pollicis Longus- Origin
shaft/ulna
146
Extensor Pollicis Longus- Insertion
distal phalanx/digit 1
147
Extensor Pollicis Longus- Action
extends digit 1 at IP joint
148
Extensor Pollicis Longus- Nerve
Radial Nerve
149
Extensor Indicis- Origin
shaft/ulna
150
Extensor Indicis- Insertion
proximal phalanx/digit 2
151
Extensor Indicis- Action
extends digit 2 at MP joint
152
Extensor Indicis- Nerve
Radial Nerve
153
Anconeus- Origin
lateral epicondyle/humerus
154
Anconeus- Insertion
olecranon process/ulna
155
Anconeus- Action
extend forearm
156
Anconeus- Nerve
Radial Nerve
157
Abductor Pollicis Brevis- Origin
1) trapezium
| 2) scaphoid
158
Abductor Pollicis Brevis- Insertion
proximal phalanx/digit 1
159
Abductor Pollicis Brevis- Action
abducts digit 1 at MP joint
160
Abductor Pollicis Brevis- Nerve
Median Nerve
161
Opponens Pollicis- Origin
trapezium
162
Opponens Pollicis- Insertion
1st metacarpal
163
Opponens Pollicis- Action
medially rotates 1st metacarpal
164
Opponens Pollicis- Nerve
Median Nerve
165
Flexor Pollicis Brevis- Origin
1) trapezium
2) trapezoid
3) capitate
166
Flexor Pollicis Brevis- Insertion
proximal phalanx/digit 1
167
Flexor Pollicis Brevis- Action
flexes digit 1 at MP joint
168
Flexor Pollicis Brevis- Nerve
Ulnar Nerve
| Median Nerve
169
Adductor Pollicis- Origin
1) oblique head- trapezoid, capitate, 2nd and 3rd metacarpals
2) transverse head- 3rd metacarpal
170
Adductor Pollicis- Insertion
proximal phalanx/digit 1
171
Adductor Pollicis- Action
adducts digit 1
172
Adductor Pollicis- Nerve
Ulnar Nerve
173
Abductor Digiti Minimi- Origin
pisiform
174
Abductor Digiti Minimi- Insertion
proximal phalanx/digit 5
175
Abductor Digiti Minimi- Action
abducts digit 5
176
Abductor Digiti Minimi- Nerve
Ulnar Nerve
177
Flexor Digiti Minimi- Origin
hamate
178
Flexor Digiti Minimi- Insertion
proximal phalanx/digit 5
179
Flexor Digiti Minimi- Action
flexes digit 5 at MP joint
180
Flexor Digiti Minimi- Nerve
Ulnar Nerve
181
Opponens Digiti Minimi- Origin
hamate
182
Opponens Digiti Minimi- Insertion
5th metacarpal
183
Opponens Digiti Minimi- Action
laterally rotates 5th metacarpal
184
Opponens Digiti Minimi- Nerve
Ulnar Nerve
185
Lumbricales- Origin
tendons of the flexor digitorum profundus muscle
186
Lumbricales- Insertion
tendons of the extensor digitorum muscle
187
Lumbricales- Action
1) flexes MP joint
| 2) extends IP joint
188
Lumbricales- Nerve
1st and 2nd lumbricales- Median Nerve
| 3rd and 4th lumbricales- Ulnar Nerve
189
Dorsal Interossei- Origin
2nd, 3rd and 4th metacarpals
190
Dorsal Interossei- Insertion
proximal phalanx of digits 2, 3, and 4
191
Dorsal Interossei- Action
1) abduct digits 2-4
2) flex MP joints
3) extend IP joints
192
Dorsal Interossei- Nerve
Ulnar Nerve
193
Palmar Interossei- Origin
2nd, 3rd, 4th and 5th metacarpals
194
Palmar Interossei- Insertion
proximal phalanx of digits 2, 4, and 5
195
Palmar Interossei- Action
1) adduct digits 2, 4, and 5
2) flex MP joints
3) extend IP joints
196
Palmar Interossei- Nerve
Ulnar Nerve
