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UE POINAS Flashcards

1
Q

What is the muscle action of the subclavius

A

Depresses and anchors clavicle

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2
Q

What is the proximal attachment of the subclavius

A

Junction of first rib and its costal cartilage

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3
Q

What is the distal attachment of the subclavius

A

Inferior surface of middle surface of clavicle

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4
Q

What nerve innervates the subclavius?

A

Nerve to Subclavius (C5,C6)

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5
Q

What is the muscle action of the anterior scalene

A

Flexes neck laterally
Elevates first rib during forced inhalation

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6
Q

What is the superior attachment of the Anterior scalene

A

TP C3-C6

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7
Q

What is the inferior attachment of the anterior scales

A

RIb 1

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8
Q

What is the nerve innervation of the anterior scalene

A

Cervical spinal nerve C4-C6

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9
Q

What is the muscle action of the middle scalene

A

Flex the neck laterally
elevate the first rib during forced inhalation

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10
Q

What is the superior attachment of the middle scalene

A

TP C5-C7

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11
Q

What is the inferior attachment of the anterior scales

A

RIb 1

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12
Q

What is the nerve innervation of the middle scalene

A

Anterior rami of cervical spinal nerves

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13
Q

What are the muscle actions of the posterior scalene

A

Flex neck laterally
Elevate 2nd rib during forced inhalation

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14
Q

What is the superior attachment of the posterior scalenes

A

TP C5-C7

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15
Q

What is the inferior attachment of the posterior scalenes

A

external border of rib 2

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16
Q

What is the nerve innervation of the posterior scalene

A

Anterior rami of cervical spinal nerves C7&C8

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17
Q

What is the muscle action of biceps brachii

A

Forearm supination main action
Elbow flexion
*short head resists dislocation of shoulder

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18
Q

What is the proximal attachment of the biceps brachii

A

Short head: coracoid process
Longhead: supraglenoid tubercle + labrum

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19
Q

What is the distal attachment of the biceps brachii

A

Radial tuberosity
Forearm fascia via bicipital aponeurosis

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20
Q

What is the nerve innervation of the biceps brachii
bonus Q what cord is this

A

Musculocutaneous C5,C6,C7
Lateral cord

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21
Q

What are the muscle actions of the coracobrachialis

A

flex shoulder
Adduct shoulder
resists dislocation of shoulder

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22
Q

What is the proximal attachment of the coracobrachialis

A

Coracoid process of scapula

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23
Q

What is the distal attachment of the Coracobrachialis

A

middle humerus

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24
Q

What nerve innervates the coracobrachialis
bonus Q what cord is this

A

musculocutaneous nerve (C5,C6,C7)
lateral cord

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25
Q

What is the muscle action of the brachialis

A

flexes the elbow in all positions (humerolnar joint) **strongest elbow flexor*

Main contributor to elbow flexion when forearm is pronated

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26
Q

What is the proximal attachment of the brachialis

A

Distal anterior humerus

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27
Q

What is the distal attachment of the brachialis

A

ulnar tuberosity
coronoid process of ulna

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28
Q

What nerve innervates the brachialis
bonus Q what cord is this

A

Musclulocutaneous nerve (C5 & C6)
Small branch from Radial C5 & C7
Lateral & Posterior cord

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29
Q

What is the muscle action of triceps brachii

A

Chief extensor of forearm/elbow
long head resists dislocation of humerus
*important in adduction

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30
Q

What is the proximal attachment of the triceps brachii

A

Longhead: infraglenoid tubercle
Lateral head: posterior humerus, superior to radial groove
medial head: posterior humerus, inferior to radial groove

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31
Q

What is the distal attachment to the triceps brachii

A

olecranon of ulna

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32
Q

What nerve innervates the triceps brachii
bonus Q what cord is this

A

Radial Nerve ( C6,C7,C8)
Posterior

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33
Q

What is the muscle action of the brachioradialis

A

Flex the elbow in mid pronated position
Assists to pronate and supinate forearm when these movements are resisted from end range.

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34
Q

What is the proximal attachment of the brachioradialis

A

lateral supraepicondylar ridge of humerus

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35
Q

What is the distal attachment of the brachioradialis

A

Distal lateral radius (proximal to styloid process)

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36
Q

What nerve innervates the brachioradialis
bonus Q what cord is this

A

Radial nerve (C5-C7)
Posterior

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37
Q

What is the muscle action of the anconeus

A

Assists triceps in extending forearm
stabilizes elbow joint
May abduct ulna during pronation

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38
Q

What is the proximal attachment of the anconeus

A

lateral epicondyle of humerus

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39
Q

What is the distal attachment of the anconeus

A

lateral olecranon

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40
Q

What nerve innervates the anconeus
bonus Q what cord is this

A

Radial Nerve (C7-T1)
posterior cord

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41
Q

What is the muscle action of the supinator

A

Supinates the forearm

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42
Q

What is the proximal attachment of the supinator

A

lateral epicondyle of humerus
radial collateral ligament
annular ligament

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43
Q

What is the distal attachment of the supinator

A

lateral radius

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44
Q

What nerve innervates the supinator

A

Radial Nerve (PIN)
C7, C8*

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45
Q

What is the muscle action of the Pronator teres

A

Pronation of forearm
assists with elbow flexion

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46
Q

What is the proximal attachment of the pronator teres

A

medial epicondyle of humerus (common flexor tendon)
coronoid process of ulna

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47
Q

What is the distal attachment of the pronator teres

A

lateral surface of radius

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48
Q

What is the nerve innervation of the pronator teres

A

Median C6 & C7*

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49
Q

What is the proximal attachment of the flexor carpi radialis

A

Medial epicondyle of humerus

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50
Q

What is the distal attachment of the flexor carpi radialis

A

Bases of 2nd & 3rd metacarpals

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51
Q

What nerve innervates the flexor carpi radialis
bonus Q what cord is this
what other muscle is also innervated by this nerve

A

Median nerve C6, C7*
lateral & medial cord
Pronator teres

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52
Q

What is the muscle action of the flexor carpi radialis

A

Wrist flexion
Radial Deviation

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53
Q

What is the muscle action of the palmaris longus

A

Tense palmar aponeurosis
Wrist flexion

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54
Q

What is the proximal attachment of the palmaris longus

A

Medial epicondyle of humerus
(common flexor origin)

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55
Q

What is the distal attachment of the palmaris longus

A

flexor retinaculum
palmar aponeurosis

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56
Q

What nerve innervates the palmaris longus

A

Median Nerve C7,C8

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57
Q

What is the muscle action of the flexor carpi ulnaris

A

Wrist flexion
Ulnar Deviation

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58
Q

What is the proximal attachment of the flexor carpi ulnaris

A

humeral head: medial epicondyle of humerus
ulnar head: posterior ulna

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59
Q

What is the distal attachment of the flexor carpi ulnaris

A

pisiform
hook of hamate
base of 5th metacarpal

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60
Q

What nerve innervates the flexor carpi ulnaris
bonus Q what cord is this

A

Ulnar nerve C7,C8*
medial cord

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61
Q

What is the muscle action of the pronator quadratus

A

Forearm pronation
deep fibers bind radius & ulna together

62
Q

What is the proximal attachment of the pronator quadratus

A

medial distal ulna

63
Q

What is the distal attachment of the pronator quadratus

A

lateral distal radius

64
Q

What nerve innervates the pronator quadratus

A

Median Nerve (AIN) C8, T1

65
Q

What is the proximal attachment of the extensor carpi radialis longus (ECRL)

A

Lateral supraepicondylar ridge of humerus

66
Q

What is the distal attachment of the extensor carpi radialis longus

A

Base of 2nd Metacarpal

67
Q

What is the nerve innervation of the extensor carpi radialis longus (ECRL)

A

Radial Nerve C6,C7,C8

68
Q

What are the muscle actions of the extensor carpi radialis longus

A

Wrist Extension
Wrist Radial Deviation
ECLR active during first clenching

69
Q

What is the proximal attachment of the Extensor Carpi Radialis Brevis?

A

Lateral epicondyle of humerus
(Common extensor tendon)`

70
Q

What is the distal attachment of the Extensor Carpi Radialis Brevis

A

Base of 3rd metacarpal

71
Q

What is the nerve innervation of the Extensor Carpi Radialis Brevis

A

Radial nerve C6-C8

72
Q

What are the muscle actions of the Extensor Carpi Radialis Brevis

A

Wrist extension
Wrist radial deviation

73
Q

What is the proximal attachment of the Extensor Digitorum

A

Lateral epicondyle of humerus
(Common extensor tendon)

74
Q

What is the distal attachment of the Extensor Digitorum

A

Extensor expansions of digits 2-5

75
Q

What is the nerve innervation of the Extensor Digitorum

A

Radial Nerve (Deep Branch)
C7* & C8

76
Q

What is the muscle action of the Extensor Digitorum

A

Digits 2-5 Extension
@MCP joint & @IP joints

77
Q

What is the proximal attachment of the Extensor Digiti Minimi

A

Lateral epicondyle of humerus
(common extensor tendon)

78
Q

What is the distal attachment of the Extensor Digiti Minimi

A

Extensor expansion of 5th digit

79
Q

What is the nerve innervation of the Extensor Digiti Minimi

A

Radial Nerve (Deep Branch)
C7* & C8

80
Q

What is the muscle action of the Extensor Digiti Minimi

A

5th Digit Extension
@MCP joint & @IP joints

81
Q

What is the proximal attachment of the Extensor carpi ulnaris

A

Lateral epicondyle of humerus
(Common extensor tendon)

82
Q

What is the distal attachment of the Extensor Carpi Ulnaris

A

Base of the 5th metacarpal

83
Q

What is the nerve innervation of the Extensor Carpi Ulnaris

A

Radial Nerve (Deep Branch)
C7* & C8

84
Q

What is the muscle action of the Extensor Carpi Ulnaris

A

Wrist Extension
Wrist Ulnar Deviation
Active during fist clenching

85
Q

What is the proximal attachment of the Extensor Indicis

A

Posterior ulna and interosseous membrane

86
Q

What is the distal attachment of the Extensor Indicis

A

Exterior expansion of 2nd Digit

87
Q

What is the nerve innervation of the Extensor Indicis

A

Radial Nerve (PIN)
C7* & C8

88
Q

What is the muscle action of the Extensor Indicis

A

2nd digit extension @MCP joint
may assist with wrist extension

89
Q

What is the proximal attachment of the Abductor Pollicis Longus

A

Posterior surface of
ulna
radius
interosseous membrane

90
Q

What is the distal attachment of the Abductor Pollicis Longus

A

Base of 1st Metacarpal

91
Q

What is the nerve innervation of the Abductor pollicis longus

A

Radial Nerve (PIN)
C7* & C8

92
Q

What is the muscle action of the abductor pollicis longus

A

Thumb radial abduction @CMC joint
Thumb extension @ CMC joint

93
Q

What is the proximal attachment of the Extensor Pollicis Brevis

A

Posterior radius & Interosseous membrane

94
Q

What is the distal attachment of the Extensor Pollicis Brevis

A

Base of proximal phalanx of thumb

95
Q

What is the nerve innervation of the Extensor Pollicis Brevis

A

Radial Nerve (PIN)
C7 & C8*

96
Q

What is the muscle action of the Extensor Pollicis Brevis

A

Thumb Extension @ CMC joint & MCP joints

97
Q

What is the proximal attachment of the Extensor Pollicis Longus

A

Posterior ulna and interosseous membrane

98
Q

What is the distal attachment of the Extensor Pollicis Longus

A

Base of distal phalanx of thumb

99
Q

What is the nerve innervation of the Extensor Pollicis Longus

A

Radial Nerve (PIN)
C7 & C8*

100
Q

What is the muscle action of the Extensor Pollicis Longus

A

Thumb Extension @ IP Joints

101
Q

What is the proximal attachment of the Flexor Digitorum Superficialis

A

Humeroulnar head:
- Medial epicondyle (common flexor origin)
- coronoid process of ulna
Radial head:
- anterior radius

102
Q

What is the distal attachment of the Flexor Digitorum Superficialis

A

Shaft of middle phalanges of digits 2-5

103
Q

What nerve innervates Flexor Digitorum Superficialis

A

Median Nerve C7-T1

104
Q

What are the muscle actions of the Flexor Digitorum Superficialis

A

Proximal phalanx flexion @MCP joint
Middle phalanx flexion @PIP joint
of digits 2-5

105
Q

What is the proximal attachment of the Flexor Digitorum Profundus

A

Proximal ulna and interosseous membrane

106
Q

What is the distal attachment of the Flexor Digitorum Profundus

A

Medial part: Bases of distal phalanges of digits 4,5
Lateral part: Bases of distal phalanges of digits 2,3

107
Q

What is the nerve innervation of the Flexor Digitorum Profundus

A

Digits 2-3 Median AIN C8, T1
Digits 4-5 Ulnar Nerve C8,T1

108
Q

What is the muscle action of the Flexor Digitorum Profundus

A

Flexion of Digits 2-5 @MCP,PIP, and DIP joints
Assists with wrist flexion

109
Q

What is the proximal attachment of the Flexor Pollicis Longus

A

Anterior radius and adjacent interosseous membrane

110
Q

What is the distal attachment of the Flexor Pollicis Longus

A

Base of distal phalanx of thumb

111
Q

What is the nerve innervation of Flexor Pollicis Longus

A

Median Nerve (AIN) C8* T1

112
Q

What is the muscle action of the Flexor Pollicis Longus

A

Flexes phalanges of thumb

113
Q

What is the proximal attachment of the Flexor Pollicis Brevis

A

Flexor retinaculum
Tubercules of scaphoid and trapezium

114
Q

What are the distal attachments of the Flexor Pollicis Brevis

A

Base of proximal phalanx of thumb

115
Q

What is the nerve innervation of the Flexor Pollicis Brevis

A

Superficial head: Recurrent Branch of Median Nerve C8* T1
Deep head: Deep branch of Ulnar Nerve C8 T1*

116
Q

What is the muscle action of the Flexor Pollicis Brevis

A

Thumb flexion @CMC and MCP joints
Assists with thumb opposition

117
Q

What is the proximal attachment of the Abductor Pollicis Brevis

A

Flexor retinaculum
Tubercles of scaphoid & Trapezium

118
Q

What is the distal attachment of the Abductor Pollicis Brevis

A

Base of proximal phalanx of thumb

119
Q

What is the nerve innervation of the Abductor Pollicis Brevis

A

Median Nerve C8* T1

120
Q

What is the muscle action of the Abductor Pollicis Brevis

A

Thumb abduction @ CMC and MCP joints
Assist with thumb opposition

121
Q

What is the proximal attachment of the Opponens Pollicis

A

Flexor Retinaculum
Tubercles of scaphoid & Trapezium

122
Q

What is the distal attachment of the Opponens Pollicis

A

1st Metacarpal

123
Q

What is the nerve innervation of the Opponens Pollicis

A

Median Nerve C8,T1

124
Q

What is the muscle action of the Opponens Pollicis

A

Thumb Opposition
Draws 1st metacarpal to center of palm and medically rotates it

125
Q

What is the proximal attachment of the Flexor Digiti Minimi

A

Hook of hamate
Flexor retinaculum

126
Q

What is distal attachment of the Flexor Digiti Minimi

A

Base of the 5th proximal phalanx

127
Q

What is the nerve innervation of the Flexor Digiti Minimi

A

Ulnar Nerve
C8, T1*

128
Q

What is the muscle action of the Flexor Digiti Minimi

A

5th digit proximal phalanx Flexion @MCP joint

129
Q

What is the proximal attachment of the Abductor Digiti Minimi

130
Q

What are the distal attachment of the Abductor Digiti Minimi

A

Base of 5th proximal phalanx

131
Q

What is the nerve innervation of the Abductor Digiti minimi

A

Ulnar Nerve C8, T1*

132
Q

What is the muscle action of the Abductor Digiti Minimi

A

5th digit ABduction @MCP joint

133
Q

What is the proximal attachment of the Opponens Digiti Minimi

A

Hook of hamate; Flexor retinaculum

134
Q

What is the distal attachment of the Opponens Digiti Minimi

A

Medial border of 5th metacarpal

135
Q

What is the nerve innervation of the Opponens Digit Minimi

A

Ulnar Nerve C8, T1*

136
Q

What is the muscle action of the Opponens Digiti Minimi

A

5th digit Opposition @CMC joint

137
Q

What is the proximal attachment of the adductor Pollicis

A

Oblique head: Bases of 2nd & 3rd metacarpals ; capitate; Adjacent carpal bones
Transverse Head: Shaft of 3rd metacarpal

138
Q

What is the distal attachment of the Adductor Pollicis

A

Base of Proximal phalanx of thumb

139
Q

What nerve innervates the Adductor Pollicis

A

Ulnar Nerve C8, T1*

140
Q

What is the muscle action of the Adductor Pollicis

A

Thumb adduction towards lateral border of palm

141
Q

What is the proximal attachment of the lumbricals

A

1st & 2nd: Lateral two tendons of FDP ( as unipennate muscles)
3rd & 4th: Medial three tendons of FDP (as bipennate muscles)

142
Q

What is the distal attachment of the lumbricals

A

Radial sides of extensor expansions of digits 2-5

143
Q

What its the nerve innervation of the lumbricals

A

1st & 2nd : Median nerve C8 T1*
3rd & 4th : Ulnar nerve C8 T1*

144
Q

What are the muscle actions of the lumbricals

A

Of digits 2-5: MCP joint flexion, IP joint extension

145
Q

What is the proximal attachment of the Palmar Interossi

A

Palmar surfaces of 2nd, 4th, and 5th metacarpals (unipennate)

146
Q

What is the distal attachment of palmar interossei

A

Of digits 2, 4, and 5:
Bases of proximal phalanges
Extensor expansion

147
Q

What is the nerve innervation the palmar Interossei

A

Ulnar Nerve C8, T1*

148
Q

What is the muscle action of the palmar interossei

A

Digits 2, 4, and 5 adduction towards axial line
Assists lumbricals with…
-MCP joint flexion
- IP joint extension

149
Q

What is the proximal attachment of the dorsal interossei

A

Adjacent sides of two metacarpals (bipennate)

150
Q

What is the distal attachment of the dorsal interossei

A

Of digits 2-4
Bases of proximal phalanges ; extensor expansions

151
Q

What is the nerve innervation of the dorsal interossei

A

Ulnar Nerve C8 T1*

152
Q

What is the muscle actions of the dorsal interossei

A

Digits 2-4 Abduction from axial line
Assits lumbricals with…
- MCP joint flexion
- IP joint extension

Anatomy (4 decks)

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