Muscles Flashcards
0
Q
Pectoralis major insertion
A
Greater tubercle, intertubercular groove of humerus
1
Q
Pectoralis major origin
A
Clavicle, sternum, upper ribs, tendon of external oblique
2
Q
Pectoralis major action
A
Adduction and medial rotation of humerus. Forced inspiration by elevating ribcage. Clavicular: flexes humerus at shoulder joint. Sternocostal: extends humerus at shoulder joint
3
Q
Pec major nerve
A
Medial and lateral pectoral nerve
4
Q
Pectoral minor origin
A
Upper ribs
5
Q
Pec minor insertion
A
Coracoid process of scapula
6
Q
Pec minor action
A
Protraction/abduction of scapula. Elevates ribcage, thus forced inspiration
7
Q
Pec minor nerve
A
Medial pectoral nerve
8
Q
Subclavius origin
A
First rib
9
Q
Subclavian insertion
A
Subclavian groove of clavicle
10
Q
Subclavius action
A
Moves clavicle medially. Acts as protective cushion between clavicle and subclavian vessels.
11
Q
Subclavian nerve
A
Nerve to subclavius
12
Q
Trapezius origin
A
Superior nuchal line of occiput. External occipital protuberance. Ligamentum nuchae. Spines of thoracic vertebrae
13
Q
Trapezius insertion
A
Clavicle, acromion process of scapula
14
Q
Trapezius action
A
Stabilizes scapula. Upper portion: elevates scapula. Middle and lower: adducts scapula.
15
Q
Trapezius nerve
A
Motor: spinal accessory. Sensory: c4,c5.
16
Q
Rhomboid major origin
A
Spine of upper thoracics
17
Q
Rhomboid major insertion
A
Vertebral border of scapula
18
Q
Rhomboid major action
A
Elevates and adducts scapula. Helps stabilize scapula.
19
Q
Rhomboid major nerve
A
Dorsal scapular nerve
20
Q
Rhomboid minor origin
A
Spine of lower cervicals and t1
21
Q
Rhomboid minor insertion
A
Vertebral border of scapula
22
Q
Rhomboid minor action
A
Elevates and adducts scapula. Stabilizes scapula.
23
Q
Rhomboid minor nerve
A
Dorsal scapular nerve
24
Levator scapula origin
Transverse processes of upper cervicals
25
Levator scapula insertion
Superior angle of scapula
26
Levator scapula action
Elevates scapula, adducts scapula, stabilizes scapula.
27
Levator scapula nerve
Dorsal scapular nerve
28
Latissimus dorsi origin
Spine of lower thoracic and lumbar vertebrae. Thoracodorsal fascia. Crest of ilium.
29
Latissimus dorsi insertion
Intertubercular groove to lesser tubercle
30
Latissimus dorsi action
Extends, adducts, and medially rotates humerus. Involved in forced expiration.
31
Latissimus dorsi nerve
Thoracodorsal nerve
32
Serratus anterior origin
Upper ribs
33
Serratus anterior insertion
Vertebral Border of scapula
34
Serratus anterior action
Abduction/ protraction of scapula. Stabilizes scapula. Involved with forced inspiration when humerus is abducted.
35
Serratus anterior nerve
Long thoracic nerve
36
Deltoid origin
Anterior portion from clavicle. Middle from acromion process of scapula. Posterior from spine of scapula
37
Deltoid Insertion
Deltoid tuberosity of humerus
38
Deltoid action
Anterior: flexes and medially rotates arm. Middle: abducts arm. Posterior: extends and laterally rotates arm.
39
Deltoid nerve
Axillary nerve
40
Supraspinatus origin
Supraspinous fossa of scapula
41
Supraspinatus insertion
Greater tubercle of humerus
42
Supraspinatus action
Initiates abduction of arm. Laterally rotates humerus. Helps stabilize shoulder joint.
43
Supraspinatus nerve
Suprascapular nerve
44
Infraspinatus origin
Infraspinous fossa of scapula
45
Infraspinatus insertion
Greater tuberosity of humerus
46
Infraspinatus action
Laterally rotates humerus, stabilizes shoulder joint.
47
Infraspinatus nerve
Suprascapular nerve
48
Subscapularis origin
Subscapular fossa of scapula
49
Subscapularis insertion
Lesser tuberosity of humerus
50
Subscapularis action
Medially rotates humerus, stabilizes shoulder joint.
51
Subscapularis nerve
Upper and lower subscapular nerve
52
Teres major origin
Inferior angle of scapula
53
Teres major insertion
Intertubercular groove to lesser tuberosity
54
Teres major action
Adducts humerus. Stabilizes scapula. Medially rotates humerus.
55
Teres major nerve
Lower subscapular nerve
56
Teres minor origin
Axillary Border of scapula
57
Teres minor insertion
Greater tuberosity of humerus
58
Teres minor action
Laterally rotates humerus. Stabilizes shoulder joint
59
Teres minor nerve
Axillary nerve
60
Biceps brachii origin
Short head: coracoid process of scapula. Long head: supraglenoid tubercle of scapula.
61
Biceps brachii insertion
Tuberosity of radius, shaft of ulna
62
Biceps brachii action
Flexes forearm, supinates radius
63
Biceps brachii nerve
Musculocutaneous nerve
64
Coracobrachialis origin
Coracoid process of scapula
65
Coracobrachialis insertion
Shaft of humerus
66
Coracobrachialis action
Flexion and weak adduction of arm. Stabilizes shoulder joint.
67
Coracobrachialis nerve
Musculocutaneous nerve
68
Brachialis origin
Shaft of humerus
69
Brachialis insertion
Coronoid process of ulna
70
Brachialis action
Flexes forearm
71
Brachialis nerve
Musculocutaneous nerve
72
Triceps brachii origin
Long head: infraglenoid tubercle of scapula. Lateral/medial: shaft of humerus.
73
Triceps brachii insertion
Olecranon process of ulna
74
Triceps brachii action
Extension of forearm
75
Triceps brachii nerve
Radial nerve
76
Pronator Teres origin
Medial epicondyle of humerus. Coronoid process of ulna
77
Pronator Teres insertion
Pronator ridge of radius
78
Pronator Teres action
Pronates forearm at superior radio-ulnar joint. Assists in elbow flexion.
79
Pronator Teres nerve
Median nerve
80
Flexor Carpi radialis origin
Medial epicondyle of humerus
81
Flexor Capri radialis insertion
2nd metacarpal w/small slip to 3rd metacarpal
82
Flexor carpi radialis action
Flexion of hand at wrist joint. Assists in abduction of hand
83
Flexor carpi radialis nerve
Median nerve
84
Palmaris longus origin
Medial epicondyle of humerus
85
Palmaris longus insertion
Palmar aponeurosis
86
Palmaris longus action
Helps flex hand. Helps with grip. Tightens fascia of Palm.
87
Palmaris longus nerve
Median nerve
88
Flexor carpi ulnaris origin
Medial epicondyle of humerus. Olecranon process of ulna
89
Flexor carpi ulnaris insertion
Pisiform, hamate, 5th metacarpal.
90
Flexor carpi ulnaris action
Flexes hand at wrist joint. Adducts hand
91
Flexor carpi ulnaris nerve
Ulnar nerve
92
Flexor digitorum superficialis origin
Medial epicondyle of humerus
93
Flexor digitorum superficialis insertion
Middle phalanges of digits 2-5
94
Flexor digitorum superficialis action
Flexes the pip joints of digits 2-5. Helps flex hand.
95
Flexor digitorum superficialis nerve
Median nerve
96
Flexor digitorum profundus origin
Shaft of ulna
97
Flexor digitorum profundus insertion
Distal phalanges of digits 2-5.
98
Flexor digitorum profundus action
Flexes the dip joints of 2-5. Helps flex hand
99
Flexor digitorum profundus nerve
Ulnar and median nerve
100
Flexor pollicis longus origin
Shaft of ulna
101
Flexor pollicis longus insertion
Distal phalanx of digit 1
102
Flexor pollicis longus action
Flexes the thumb at IP joint
103
Flexor pollicis longus nerve
Median nerve
104
Pronator quadratus origin
Shaft of ulna
105
Pronator quadratus insertion
Shaft of radius
106
Pronator quadratus action
Pronates forearm at inferior radio-ulnar joint. Helps stabilize the inferior radio-ulnar joint.
107
Pronator quadratus nerve
Median nerve
108
Brachioradialis origin
Lateral supracondylar ridge of humerus
109
Brachioradialis insertion
Styloid process of radius
110
Brachioradialis action
Helps flex forearm, pronates and supinates forearm.
111
Brachioradialis nerve
Radial nerve
112
Extensor carpi radialis longus origin
Lateral epicondyle of humerus
113
Extensor carpi radialis longus insertion
2nd metacarpal
114
Extensor carpi radialis longus action
Extend and abduct the hand
115
Extensor carpi radialis longus nerve
Radial nerve
116
Extensor carpi radialis brevis origin
Lateral epicondyle of humerus
117
Extensor carpi radialis brevis insertion
3rd metacarpal
118
Extensor carpi radialis brevis action
Extend and abduct hand
119
Extensor carpi radialis brevis nerve
Radial nerve
120
Extensor digitorum Maximus origin
Lateral epicondyle of humerus
121
Extensor digitorum Maximus insertion
Middle phalanx of digits 2-5
122
Extensor digitorum Maximus action
Extends digits 2-5, extends hand. Abducts digits 2-5
123
Extensor digitorum Maximus nerve
Radial nerve
124
Extensor digiti minimi origin
Lateral epicondyle of humerus
125
Extensor digiti minimi insertion
Proximal phalanx of digit 5
126
Extensor digiti minimi action
Extend digit 5
127
Extensor digiti minimi nerve
Radial nerve
128
Extensor carpi ulnaris origin
Lateral epicondyle of humerus
129
Extensor carpi ulnaris insertion
5th metacarpal
130
Extensor carpi ulnaris action
Extend and adduct hand
131
Supinator origin
Lateral epicondyle of humerus. Supinator crest of ulna.
132
Supinator insertion
Shaft of radius
133
Supinator action
Supinates forearm
134
Supinator nerve
Radial nerve
135
Abductor pollicis longus origin
Shaft of ulna and radius
136
Abductor pollicis longus insertion
1st metacarpal.
137
Abductor pollicis longus action
Abducts digit 1 at CM joint
138
Abductor pollicis longus nerve
Radial nerve
139
Extensor pollicis brevis origin
Shaft of radius
140
Extensor pollicis brevis insertion
Proximal phalanx of digit 1
141
Extensor pollicis brevis action
Extends digit 1 at MP joint
142
Extensor pollicis brevis nerve
Radial nerve
143
Extensor pollicis longus origin
Shaft of ulna
144
Extensor pollicis longus insertion
Distal phalanx of digit 1
145
Extensor pollicis longus action
Extend digit 1 at IP joint
146
Extensor pollicis longus nerve
Radial nerve
147
Extensor indicis origin
Shaft of ulna
148
Extensor indicis insertion
Proximal phalanx of digit 2
149
Extensor indicis action
Extend digit 2 at MP joint
150
Extensor indicis nerve
Radial nerve
151
Anconeus origin
Lateral epicondyle of humerus
152
Anconeus insertion
Olecranon process of ulna
153
Anconeus action
Extend forearm
154
Anconeus nerve
Radial nerve
155
Abductor pollicis brevis origin
Trapezium and scaphoid
156
Abductor pollicis brevis insertion
Proximal phalanx of digit 1
157
Abductor pollicis brevis action
Abducts digit 1 at MP joint
158
Abductor pollicis brevis nerve
Median nerve
159
Opponens pollicis origin
Trapezium
160
Opponens pollicis insertion
1st metacarpal
161
Opponens pollicis action
Medially rotates 1st metacarpal
162
Opponens pollicis nerve
Median nerve
163
Flexor pollicis brevis origin
Trapezium, trapezoid, capitate
164
Flexor pollicis brevis insertion
Proximal phalanx of digit 1
165
Flexor pollicis brevis action
Flexes digit 1 at MP joint
166
Flexor pollicis brevis nerve
Ulnar and median nerve
167
Adductor pollicis origin
Trapezoid, capitate, 2nd and 3rd metacarpals.
168
Adductor pollicis insertion
Proximal phalanx of digit 1
169
Adductor pollicis action
Adducts digit 1
170
Adductor pollicis nerve
Ulnar nerve
171
Abductor digiti minimi origin
Pisiform
172
Abductor digiti minimi insertion
Proximal phalanx of digit 5
173
Abductor digiti minimi action
Abducts digit 5
174
Abductor digiti minimi nerve
Ulnar nerve
175
Flexor digiti minimi origin
Hamate
176
Flexor digiti minimi insertion
Proximal phalanx of digit 5
177
Flexor digiti minimi action
Flexes digit 5 at MP joint
178
Flexor digiti minimi nerve
Ulnar nerve
179
Opponens digiti minimi origin
Hamate
180
Opponens digiti minimi insertion
5th metacarpal
181
Opponens digiti minimi action
Laterally rotates 5th metacarpal
182
Opponens digiti minimi nerve
Ulnar nerve
183
Lumbricales origin
Tendons of flexor digitorum profundus
184
Lumbricales insertion
Tendons of the extensor digitorum Maximus
185
Lumbricales action
Flexes the MP joint, extends the IP joint
186
Lumbricales nerve
1 and 2 Lumbricales- median nerve. 3 and 4 Lumbricales- ulnar nerve.
187
Dorsal interossei origin
2,3,4 metacarpals
188
Dorsal interossei insertion
Proximal phalanx of digits 2,3,4
189
Dorsal interossei action
Abducts digits 2-4. Flexes MP, extends IP joints
190
Dorsal interossei nerve
Ulnar nerve
191
Palmar interossei origin
2,3,4,5 metacarpals
192
Palmar interossei insertion
Proximal phalanx of digits 2,4,5
193
Palmar interossei action
Adducts digits 2,4,5. Flexes MP and extends IP joints.
194
Palmar interossei nerve
Ulnar nerve
