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Unit 2 Muscles Flashcards

1
Q

Bicep Brachii Proximal Attachment

A

Short head: coracoid process of scapula
Long Head: supraglenoid tubercle of scapula

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2
Q

Bicep Brachii Distal Attachment

A
  1. Radial Tuberosity
  2. Fascia of forearm via bicipital aponeurosis
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3
Q

Bicep Brachii Innervation

A

Musculocutaneous Nerve (c5, c6, c7)

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4
Q

Bicep Brachii Action

A
  1. Supinates forearm
  2. Flexes elbow

Short head: resists shoulder dislocation

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5
Q

Coracobrachialis proximal attachment

A

Coracoid process

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6
Q

Coracobrachialis distal attachment

A

Middle surface of humerus

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7
Q

Coracobrachialis innervation

A

Musculocutaneous Nerve (c5, c6, c7)

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8
Q

Coracobrachialis action

A
  1. Flex arm
  2. Adduct Arm
  3. Resists dislocation of humerus
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9
Q

Triceps Brachii Proximal Attachment

A

Long head: infraglenoid tubercle
Lateral head: posterior surface of the humerus, superior to radial groove
Medial head: posterior surface of humerus, and inferior to Radial groove.

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10
Q

Triceps Brachii Distal Attachment

A
  1. Proximal end of olecranon of ulna
  2. Fascia of forearm
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11
Q

Triceps Brachii Innervation

A

Radial nerve (c6, c7, c8)

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12
Q

Triceps Brachii Action

A
  1. Extends elbow

Long head: resists dislocation of humerus

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13
Q

Anterior Scalene Proximal Attachment

A

Transverse processes of c3-c6

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14
Q

Anterior Scalene Distal attachment

A

1st rib

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15
Q

Anterior Scalene innervation

A

Cervical spinal nerve (c4, c5, c6)

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16
Q

Anterior Scalene action

A
  1. Flex neck laterally
  2. Elevate 1st rib during forced inhalation
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17
Q

Middle Scalene Action

A
  1. Flex neck laterally
  2. Elevate 1st rib during forced inhalation
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18
Q

Posterior Scalene Action

A
  1. Flex neck laterally
  2. Elevate 2nd rib during forced inhalation
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19
Q

Middle Scalene Proximal Attachment

A

Transverse processes of C5-C7

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20
Q

Middle Scalene Distal Attachment

A

1st rib

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21
Q

Middle Scalene Innervation

A

Anterior Rami of spinal nerves

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22
Q

Posterior Scalene Proximal Attachment

A

Transverse Process c5-c7

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23
Q

Posterior Scalene Distal Attachment

A

2nd rib

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24
Q

Posterior Scalene Innervation

A

Anterior rami of spinal nerves c7-c8

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25
Brachialis Proximal Attachment
Distal anterior surface of humerus
26
Brachialis Distal Attachment
1. Ulnar tuberosity 2. Coronoid Process
27
Brachialis Innervation
1. Musculocutaneous N. C5-C6 2. Small Branch from Radial C5 & C7
28
Brachialis Action
Flexes elbow in all positions
29
Brachioradialis Proximal Attachment
lateral supra-epicondylar ridge of humerus
30
Brachioradialis Distal Attachment
Lateral surface of distal radius proximal to styloid process
31
Brachioradialis Innervation
Radial N. (C5, C6, C7)
32
Brachioradialis Action
1. Flex elbow 2. Assits to pronate and supinate forearm when resisted
33
Anconeus Proximal Attchment
Lateral Epicondyle
34
Anconeus Distal Attachment
Lateral Olecranon
35
Anconeus Innervation
Radial (C7, C8, T1)
36
Anconeus Action
1. Assist tricep with extending elbow 2. Stabilizes elbow 3. Abduct ulna during pronation
37
Supinator Proximal Attachment
1. Lateral Epicondyle 2. Radial Collateral Lig 3. Annular Lig
38
Supinator Distal Attachment
Lateral radius
39
Supinator innervation
Posterior Interosseous N. PIN of Radial Nerve (C7, C8)
40
Supinator Action
Supinates forearm
41
Pronator Teres Proximal Attachment
1. Medial Epicondyle (common flexor tendon) 2. Coronoid Process
42
Pronator Teres Distal Attachment
Middle radius
43
Pronator Teres Innervation
Median Nerve (C6-C7)
44
Pronator Teres Action
Pronate forearm
45
Flexor Carpi Radialis Proximal Attachent
Medical Epicondyle (common flexor tendon)
46
Flexor Carpi Radialis Distal Attachment
Bases of 2-3 metacarpals
47
Flexor Carpi Radialis Innervation
Median Nerve (C6-C7)
48
Flexor Carpi Radialis Action
1. Flex the wrist 2. Radial deviation
49
Palmaris Longus Proximal Attachment
Medial Epicondyle (common flexor tendon)
50
Palmaris Longus Distal Attachment
1. Flexor retinaculum 2. Palmar Aponeurosis
51
Palmaris Longus Innervation
Median Nerve (C7-C8)
52
Palmaris Longus Action
1. Tense palmar aponeurosis 2. Flex wrist
53
Flexor Carpi Ulnaris Proximal Attachment
Humeral Head: Medial Epicondyle (Common Flexor tendon) Ulnar Head: Posterior ulna
54
Flexor Carpi Ulnaris Distal Attachment
1. Hook of hamate 2. Pisiform 3. Base of 5th metacarpal
55
Flexor Carpi Ulnaris Innervation
Ulnar Nerve (C7-C8)
56
Flexor Carpi Ulnaris Action
1.Flex wrist 2. Ulnar Deviation
57
Pronator Quadratus Proximal Attachment
1. anterior surface of distal ulna
58
Pronator Quadratus Distal Attachment
anterior surface of distal radius
59
Pronator Quadratus Innervation
Median nerve (AIN) (C8-T1)
60
Pronator Quadratus Action
1. Pronate Forearm 2. Bind radius and ulna
61
Extensor Carpi Radialis Longus Proximal Attachment
Lateral Supraepicondylar ridge
62
Extensor Carpi Radialis Longus Distal Attachment
base of 2nd metacarpal
63
Extensor Carpi Radialis Longus Innervation
Radial Nerve (C6, C7, C8)
64
Extensor Carpi Radialis Longus Action
1. Extend wrist 2. Radial Deviation 3. Fist Clenching
65
Extensor Carpi Radialis Brevis Proximal Attachment
Lateral epicondyle (Common extensor tendon)
66
Extensor Carpi Radialis Brevis Distal Attachment
Dorsal Base of 3rd metacarpal
67
Extensor Carpi Radialis Brevis Innervation
Radial Nerve (C6, C7, C8)
68
Extensor Carpi Radialis Brevis Action
1. Extend wrist 2. Radial deviation
69
Extensor Digitorum Proximal Attachment
Lateral Epicondyle (common extensor tendon)
70
Extensor Digitorum Distal Attachment
Extensor expansions of medial 4 digits
71
Extensor Digitorum Innervation
Radial Nerve (C7, C8)
72
Extensor Digitorum Action
Extends medial 4 long digits
73
Extensor Digiti Minimi Proximal Attachment
Lateral epicondyle (common extensor tendon)
74
Extensor Digiti Minimi Distal Attachment
Extensor expansions of 5th digit
75
Extensor Digiti Minimi Innervation
Radial Nerve (C7, C8)
76
Extensor Digiti Minimi Action
Extends 5th digit @MCP & IP
77
Extensor Carpi Ulnaris Proximal Attachment
lateral epicondyle (common extensor tendon)
78
Extensor Carpi Ulnaris Distal Attachment
Base of 5th metacarpal
79
Extensor Carpi Ulnaris Innervation
Radial Nerve (C7, C8)
80
Extensor Carpi Ulnaris Action
1. Extend Wrist 2. Ulnar Deviation
81
Extensor indicis Proximal Attachment
1. Posterior, distal ulna 2. Interosseous membrane
82
Extensor indicis Distal Attachment
Extensor expansion of 2nd digit
83
Extensor indicis Innervation
Radial (PIN) Nerve (C7, C8)
84
Extensor indicis Action
1. Extend 2nd digit at MCP 2. Assist to extend wrist
85
Abductor Pollicis Longus Proximal Attachment
1. Posterior surface of ulna, radius, and interosseous membrane
86
Abductor Pollicis Longus Distal Attachment
Base of 1st metacarpal
87
Abductor Pollicis Longus Innervation
Radial (PIN) Nerve (C7-C8)
88
Abductor Pollicis Longus Action
1. Radially Abduct thumb 2. Extend thumb
89
Extensor Pollicis Brevis Proximal Attachment
1. Posterior radius, 2. interosseous membrane
90
Extensor Pollicis Brevis Distal Attachment
Base of proximal phalanx of thumb
91
Extensor Pollicis Brevis Innervation
Radial (PIN) Nerve (C7-C8)
92
Extensor Pollicis Brevis Action
Extend thumb at MCP and CMC
93
Extensor Pollicis Longus Proximal Attachment
1. Posterior ulna, 2. interosseous membrane
94
Extensor Pollicis Longus Distal Attachment
Base of distal phalanx of thumb
95
Extensor Pollicis Longus Innervation
Radian (PIN) Nerve (C7-C8)
96
Extensor Pollicis Longus Action
Extend thumb at CMC, MCP, & IP
97
Flexor Digitorum Superficialis Proximal Attachment
Humero-Ulnar head: 1. Medial Epicondyle (Common flexor tendon) 2. Coronoid Process Radial Head: anterior radius
98
Flexor Digitorum Superficialis Distal Attachment
Shafts of middle phalanges of middle 4 digits
99
Flexor Digitorum Superficialis Innervation
Median Nerve (C7, C8, T1)
100
Flexor Digitorum Superficialis Action
1. Flexes middle phalanges at PIP joints 2. Flexes proximal phalanges at MCP joint
101
Flexor Digitorum Profundus Proximal Attachment
1. Proximal ulna 2. interosseous membrane
102
Flexor Digitorum Profundus Distal Attachment
Medial Part: Bases of distal phalanges of digits 4-5 Lateral Part: bases of distal phalanges of digits 2-3
103
Flexor Digitorum Profundus Innervation
Digits 2-3: Median (AIN) nerve (C8-T1) Digits 4-5: Ulnar Nerve (C8-T1)
104
Flexor Digitorum Profundus Action
1. Flex 2nd-5th fingers and MCP, PIP, & DIP 2. Assist to flex wrist with RC joint
105
Flexor Pollicis Longus Proximal Attachment
1. Anterior radius 2. adjacent interosseous membrane
106
Flexor Pollicis Longus Distal Attachment
Base of distal phalanx of thumb
107
Flexor Pollicis Longus Innervation
Median (AIN) nerve (C8-T1)
108
Flexor Pollicis Longus Action
Flexes Phalanges of 1st digit (thumb)
109
Pronator Quadratus Proximal Attachment
Medial, anterior surface of distal ulna
110
Pronator Quadratus Distal Attachment
lateral, anterior surface of distal radius
111
Pronator Quadratus Innervation
Median Nerve (AIN) (C8-T1)
112
Pronator Quadratus Action
1. Pronate forearm 2. Bind ulna and radius together
113
Flexor Pollicis Brevis Proximal Attachment
1. Flexor retinaculum 2. Tubercle of Scaphoid 3. Tubercle of trapezium
114
Flexor Pollicis Brevis Distal Attachment
base of Proximal phalanx of thumb
115
Flexor Pollicis Brevis Innervation
Superficial head: Median (recurrent branch) (c8-T1)
116
Flexor Pollicis Brevis Action
1. Flex the thumb at CMC & MCP joints 2. Assist in opposition of thumb
117
Abductor Pollicis Brevis Proximal Attachment
1. Flexor Retinaculum 2. Tubercle of scaphoid 3. Tubercle of trapezium
118
Abductor Pollicis Brevis Distal Attachment
base of proximal phalanx of thumb
119
Abductor Pollicis Brevis Innervation
Median (Recurrent Branch) (C8-T1)
120
Abductor Pollicis Brevis Action
1. Abduct the thumb at CMC and MCP joint 2. Assist in opposition of thumb
121
Opponens Pollicis Proximal Attachment
1. Flexor Retinaculum 2. Tubercle of scaphoid 3. Tubercle of Trapezium
122
Opponens Pollicis Distal Attachment
1st metacarpal
123
Opponens Pollicis Innervation
Median (recurrent branch) (c8-T1)
124
Opponens Pollicis Action
1. Oppose thumb (Draws 1st metacarpal medially Rotates 1st metacarpal medially)
125
Flexor Digiti Minimi Proximal Attachment
1. Hook of hamate 2. Flexor Retinaculum
126
Flexor Digiti Minimi Distal Attachment
base of proximal phalanx of 5th digit
127
Flexor Digiti Minimi Innervation
Ulnar nerve (deep branch) (C8-T1)
128
Flexor Digiti Minimi Action
Flex 5th digit at proximal phalanx
129
Abductor Digiti Minimi Proximal Attachment
Pisiform
130
Abductor Digiti Minimi Distal Attachment
base of Proximal Phalanx of 5th digit
131
Abductor Digiti Minimi Innervation
Ulnar Nerve (deep branch) (C8-T1)
132
Abductor Digiti Minimi Action
Abduct 5th finger at MCP joint
133
Opponens Digiti Minimi Proximal Attachment
1. hook of hamate 2. Flexor Retinaculum
134
Opponens Digiti Minimi Distal Attachment
medial border of 5th metacarpal
135
Opponens Digiti Minimi Innervation
Ulnar Nerve (deep branch) (C8-T1)
136
Opponens Digiti Minimi Action
Opposition of 5th finger at CMC joint
137
Adductor Pollicis Proximal Attachent
Oblique: 1. Bases of 2nd and 3rd metacarpals 2. Capitate 3. Adjacent Carpals Transverse: shaft of 3rd metacarpal
138
Adductor Pollicis Distal Attachment
base of proximal phalanx of thumb
139
Adductor Pollicis Innervation
Ulnar Nerve (deep branch) (C8-T1)
140
Adductor Pollicis Action
Adducts thumb
141
Palmar Interossei Proximal Attachment
Palmar surfaces of 2nd, 4th, and 5th metacarpals (3, unipennate)
142
Palmar Interossei Distal attachment
1. Bases of proximal phalanges of 2nd, 4th, and 5th digits 2. Extensor expansions of 2nd, 4th, and 5th digits
143
Palmar Interossei innervation
Ulnar Nerve (deep branch) (C8-T1)
144
Palmar Interossei Action
1. Adduct 2nd, 4th, and 5th 2. Assists lumbricals in Flexing MCP 3. Assistt lumbricals in extending IP Joints
145
Dorsal Interossei Proximal attachment
Adjacent sides of 2 metacarpals (4 bipennate)
146
Dorsal Interossei Distal Attachment
1. Bases of proximal phalanges 2. Extensor expansions of 2nd-4th digits
147
Dorsal Interossei Innervation
Ulnar nerve (deep branch) (C8-T1)
148
Dorsal Interossei Action
1. Abduct 2nd-4th digits 2. Assists lumbricals in Flexing MCP 3. Assistt lumbricals in extending IP Joints
149
Lumbricals Proximal Attachment
1st and 2nd: Lateral 2 tendons of FDP (unipennate 3rd-4th: Medial 3 tendons of FDP (bipennate)
150
Lumbricals Distal attachment
Radial sides of extensor expansions of 2nd-5th digits
151
Lumbricals Innervation
1st and 2nd: Median (digital branch)(C8-T1) 3rd-4th: Ulnar (deep branch) (C8-T1)
152
Lumbricals Action
1. Flex MCP Joint 2. Extend IP Joint of 2nd-5th

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