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MEDI2100 - MS > UL > Flashcards

UL Flashcards

1
Q

What is the major medial rotator of the arm at the shoulder joint?

A

Subscapularis

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2
Q

What is responsible for abduction of the thumb?

A

Abductor Pollicis Brevis

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3
Q

What flexes the MCP joint of the thumb?

A

Flexor Pollicis Brevis

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4
Q

What opposes the thumb by medially rotating and flexing the metacarpal on the trapezium?

A

Opponens Pollicis

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5
Q

What 3 muscles make up the thenar eminence of the hand?

A

Abductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis

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6
Q

What nerve innervates the thenar muscles of the hand?

A

Median Nerve

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7
Q

What rotates the metacarpal of the little finger towards the palm, causing opposition?

A

Opponens digiti minimi

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8
Q

What abducts the little finger?

A

Abductor digiti minimi

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9
Q

What flexes the MCP joint of the little finger?

A

Flexor digiti minimi brevis

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10
Q

What is responsible for flexion at the MCP joint and extension at the interphalangeal joints of each digit.

A

Lumbricals

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11
Q

What abducts the fingers at the MCP joint?

A

Dorsal Interossei

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12
Q

What adducts the fingers at the MCP joint

A

Palmar Interossei

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13
Q

What is responsible for adduction of the thumb?

A

Adductor Pollicis

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14
Q

What wrinkles the skin of the hypothenar eminence and deepens the curvature of the hand, improving grip?

A

Palmaris Brevis

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15
Q

What muscle originates from the tubercles of the Scaphoid and Trapezium and inserts into the lateral side of the proximal phalanx of the thumb?

A

Abductor Pollicis Brevis

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16
Q

What muscle originates from the tubercle of the trapezium and from the associated flexor retinaculum and inserts into the base of the proximal phalanx of the thumb?

A

Flexor Pollicis Brevis

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17
Q

What muscle originates from the tubercle of the trapezium and the associated flexor retinaculum and inserts into the lateral margin of the metacarpal of the thumb?

A

Opponens Pollicis

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18
Q

What muscle originates from the hook of hamate and associated flexor retinaculum and inserts into the medial margin of the fifth metacarpal?

A

Opponens Digiti Minimi

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19
Q

What muscle originates from the pisiform and the tendon of the flexor carpi ulnaris and inserts into the base of the proximal phalanx of the little finger?

A

Abductor Digiti Minimi

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20
Q

What muscle originates from the hook of hamate and adjacent flexor retinaculum and inserts into the base of the proximal phalanx of the little finger?

A

Flexor digiti minimi brevis

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21
Q

What group of muscles originate from a tendon of the flexor digitorum profundus and pass dorsally and laterally around each finger, and insert into the extensor hood.

A

Lumbricals

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22
Q

What interossei originate from the lateral and medial surfaces of the metacarpals and insert into the extensor hood and proximal phalanx of each finger?

A

Dorsal Interossei

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23
Q

What interossei originate from either a medial or lateral surface of a metacarpal and insert into the extensor hood and proximal phalanx of same finger?

A

Palmar Interossei

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24
Q

What muscle has the transverse head originate from metacarpal III and the oblique head originating from the capitate and adjacent areas of metacarpals II and III and inserts into the base of the proximal phalanx of the thumb?

A

Adductor Pollicis

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25
Q

What muscle originates from the palmar aponeurosis and flexor retinaculum and inserts into the dermis of the skin on the medial margin of the hand.

A

Palmaris brevis

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26
Q

What muscle is responsible for flexion and adduction at the wrist?

A

Flexor carpi ulnaris

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27
Q

What muscle has its humeral head originate from the medial epicondyle of the humerus with the other superficial flexors, with the ulnar head originating from the olecranon of the ulnar and inserts into the pisiform bone, hook of hamate, and base of the 5th metacarpal?

A

Flexor carpi ulnaris

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28
Q

What muscle is responsible for flexion at the wrist?

A

Palmaris Longus

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29
Q

What muscle originates from the medial epicondyle and inserts into the flexor retinaculum of the wrist?

A

Palmaris Longus

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30
Q

What muscle is responsible for flexion and abduction at the wrist?

A

Flexor carpi radialis

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31
Q

What muscle originates from the medial epicondyle and inserts into the base of metacarpals II and III.

A

Flexor Carpi Radialis

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32
Q

What muscle is responsible for pronation of the forearm?

A

Pronator Teres

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33
Q

What muscle originates from the medial epicondyle, and the coronoid process of the ulna and inserts laterally into the mid-shaft of the radius?

A

Pronator Teres

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34
Q

What muscle is responsible for flexing the metacarpophalangeal joints and proximal interphalangeal joints at the 4 fingers, and flexion at the wrist?

A

Flexor digitorum superficialis

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35
Q

What muscle originates from the medial epicondyle of the humerus and from the radius and inserts into the middle phalange of each finger?

A

Flexor digitorum superficialis

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36
Q

What muscle is responsible for flexing the distal interphalangeal joints of the fingers and flexing the metacarpophalangeal joints and flexion of the wrist?

A

Flexor digitorum profundus

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37
Q

What muscle originates from the ulna and associated interosseous membrane, splits into four tendons, that pass through the carpal tunnel and insert into the distal phalanges of the four fingers?

A

Flexor digitorum profundus

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38
Q

What muscle is responsible for flexing the interphalangeal joint and metacarpophalangeal joint of the thumb?

A

Flexor pollicis longus

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39
Q

What muscle originates from the anterior surface of the radius and surrounding interosseous membrane and inserts into the base of the distal phalanx of the thumb?

A

Flexor pollicis longus

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40
Q

What muscle is responsible for flexing the interphalangeal joint and metacarpophalangeal joint of the thumb?

A

Flexor pollicis longus

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41
Q

What muscle in the deep anterior forearm is responsible for pronating the forearm?

A

Pronator quadratus

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42
Q

What muscle originates from the anterior surface of the ulna and inserts into the anterior surface of the radius?

A

Pronator quadratus

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43
Q

What muscle is responsible for flexion at the elbow?

A

Brachioradialis

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44
Q

What muscle originates from the proximal aspect of the lateral supracondylar ridge of humerus and inserts into the distal end of the radius, just before the radial styloid process?

A

Brachioradialis

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45
Q

What muscle(s) is responsible for extension and abduction at the wrist?

A

Extensor carpi radialis longus and brevis

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46
Q

What muscle originates from the supracondylar ridge and inserts into metacarpal II and III?

A

Extensor carpi radialis longus

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47
Q

What muscle originates from the lateral epicondyle and inserts into metacarpal II and III?

A

Extensor carpi radialis brevis

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48
Q

What muscle is responsible for extension of the medial four fingers at the MCP and IP joints?

A

Extensor digitorum communis

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49
Q

What muscle originates from the lateral epicondyle, continues into the distal part of the forearm, where it splits into four, and inserts into the extensor hood of each finger?

A

Extensor digitorum communis

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50
Q

What muscle is responsible for extension of the little finger, and contributes to extension at the wrist?

A

Extensor digiti minimi

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51
Q

What muscle originates from the lateral epicondyle of the humerus and inserts, with the extensor digitorum tendon, into the extensor hood of the little finger?

A

Extensor digiti minimi

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52
Q

What muscle is responsible for extension and adduction of wrist?

A

Extensor carpi ulnaris

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53
Q

What muscle originates from the lateral epicondyle of the humerus and inserts into the base of metacarpal V?

A

Extensor carpi ulnaris

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54
Q

What muscle is responsible for extension and stabilisation of the elbow joint an abducts the ulna during pronation of the forearm?

A

Anconeus

55
Q

What muscle originates from the lateral epicondyle and inserts into the posterior and lateral part of the olecranon?

A

Anconeus

56
Q

What muscle is responsible for supination of the forearm?

A

Supinator

57
Q

What muscle has one head originate from the lateral epicondyle of the humerus while the other originates from the posterior surface of the ulna where they insert together into the posterior surface of the radius?

A

Supinator

58
Q

What muscle in the deep posterior forearm is responsible for abduction of the thumb?

A

Abductor pollicis longus

59
Q

What muscle originates from the interosseous membrane and the adjacent posterior surfaces of the radius and ulna, and inserts into the lateral side of the base of metacarpal I?

A

Abductor pollicis longus

60
Q

What muscle is responsible for extension at the metacarpophalangeal and carpometacarpal joints of the thumb?

A

Extensor pollicis brevis

61
Q

What muscle originates from the posterior surface of the radius and interosseous membrane and inserts into the base of the proximal phalanx of the thumb?

A

Extensor pollicis brevis

62
Q

What muscle is responsible for extension of all joints of the thumb; carpometacarpal, metacarpophalangeal and interphalangeal?

A

Extensor pollicis longus

63
Q

What muscle originates from the posterior surface of the ulna and interosseous membrane and inserts into the distal phalanx of the thumb?

A

Extensor pollicis longus

64
Q

What muscle is responsible for extension of the index finger?

A

Extensor indicis proprius or extensor indices

65
Q

What muscle originates from the posterior surface of the ulna and interosseous membrane, distal to the extensor pollicis longus and inserts into the extensor hood of the index finger?

A

Extensor indicis proprius or extensor indices

66
Q

What are the 3 ligaments of the acromioclavicular joint?

A

Acromioclavicular ligament, conoid ligament and trapezoid ligament

67
Q

What classification of joint is the acromioclavicular joint?

A

Synovial plane joint

68
Q

What 3 ligaments are present in the sternoclavicular joint?

A

Sternoclavicular ligaments (anterior and posterior), interclavicular ligament and costoclavicular ligament

69
Q

What classification of joint is the sternoclavicular joint?

A

Synovial plane joint

70
Q

What bursae are present in the shoulder joint?

A

Subacromial and subscapular

71
Q

What 2 bursae are present in the shoulder joint?

A

Subacromial and subscapular

72
Q

What 5 ligaments are present in the shoulder joint?

A

Glenohumeral ligament, coracohumeral ligament, transverse humeral ligament, coracoclavicular ligament and acromioclavicular ligament

73
Q

What classification of joint is the shoulder joint?

A

Synovial ball and socket joint

74
Q

What 3 bursae are present in the elbow joint?

A

Intratendious, subtendinous and subcutaneous

75
Q

What 3 ligaments are present in the elbow joint?

A

Radial collateral ligament, ulnar collateral ligament and annular ligament

76
Q

What classification of joint is the elbow joint?

A

Synovial hinge joint

77
Q

What ligament is present in the proximal radioulnar ligament?

A

Annular ligament

78
Q

What classification of joint is the proximal radioulnar joint?

A

Synovial pivot joint

79
Q

What 3 ligaments are present in the distal radioulnar joint?

A

Anterior radioulnar ligament, posterior radioulnar ligament and articular disk

80
Q

What classification of joint is the distal radioulnar joint?

A

Synovial pivot joint

81
Q

What sheet of connective tissue holds the radius and ulna together and acts as a site of attachment for the muscles of the forearm?

A

Interosseous membrane

82
Q

Function of Subclavius

A

Stabilises clavicle

83
Q

Origin + Insertion of Subclavius

A 
O = 1st rib and costal cartilage
I = Subclavian groove of clavicle
84
Q

Innervation of Subclavius

A

Nerve to subclavius (C5-6)

85
Q

Function of Pec Major

A

Adducts and medially rotates arm

86
Q

Origin + Insertion of Pec Major

A 
O = Medial half of clavicle, sternal body, manubrium, true ribs, external abdominal oblique aponeurosis
I = Crest of greater tubercle
87
Q

Innervation of Pec Major and Pec Minor

A

Medial and lateral pectoral nerves

88
Q

Function of Pec Minor

A

Protracts shoulder joint

89
Q

Origin + Insertion of Pec Minor

A 
O = 3-5th ribs
I = Coracoid process of scap
90
Q

Function of Serratus Anterior

A

Protracts Scapula

91
Q

Origin + Insertion of Serratus Anterior

A 
O = Surfaces of 1st-9th ribs quite laterally
I = Medial border of scap
92
Q

Innervation of Serratus Anterior

A

Long thoracic nerve

93
Q

Function of Deltoid’s 3 parts

A

Clavicular part - flexes arm
Acromial part - abducts arm
Scapular spinal part - extends arm

94
Q

Origin of Deltoid’s 3 parts

A

Clavicular part - lateral third of clavicle
Acromial part - acromion
Scapular spinal part - spine of scapula

95
Q

Insertion of Deltoid

A

Deltoid tuberosity of humerus

96
Q

Innervation of Deltoid

A

Axillary nerve

97
Q

Function of Trapezius’ 3 parts

A

Descending part - elevates shoulder
Transverse part - retracts shoulder
Ascending part - depresses shoulder

98
Q

Origin of Trapezius

A

Occipital bone, nuchal ligament, C7-T12 spinous processes

99
Q

Insertion of Trapezius’ 3 parts

A

Descending part - lateral third of clavicle
Transverse part - acromion
Ascending part - spine of scapula

100
Q

Innervation of Trapezius

A

Accessory nerve

101
Q

Function of Rhomboids Maj + Min

A

Retract scapula

102
Q

Origin + Insertion of Rhomboids Major

A 
O = Spinous processes of T2-5
I = Medial border of scap
103
Q

Origin + Insertion of Rhomboids Minor

A 
O = Nuchal ligament and spinous processes of C7-T1
I = Medial border of scap
104
Q

Innervation of Rhomboids Major + Minor

A

Dorsal scapular nerve

105
Q

Function of Levator Scapulae

A

Elevate shoulder

106
Q

Origin + Insertion of Levator Scapulae

A 
O = C1-C4
I = Superior angle of scap
107
Q

Innervation of Levator Scapulae

A

Ant. rami of spinal nerves

108
Q

Function of Lat. D

A

Adducts and medially rotates arm

109
Q

Origin + Insertion of Lat. D

A 
O = T7 - L5 spinous processes and thoracolumbar fascia
I = Floor of intertubercular sulcus of humerus
110
Q

Innervation of Lat. D

A

Thoracodorsal nerve

111
Q

Function of Subscapularis

A

Medially rotate arm

112
Q

Origin + Insertion of Subscapularis

A 
O = Subscapular fossa
I = Lesser tubercle of humerus
113
Q

Innervation of Subscapularis

A

Upper and lower subscapular nerves

114
Q

Function of Supraspinatus

A

Adducts arm

115
Q

Origin + Insertion of Supraspinatus

A 
O = Supraspinous fossa
I = Greater tubercle of humerus
116
Q

Innervation of supraspinatus and infraspinatus

A

Subscapular nerve

117
Q

Function of Infrapsinatus

A

Laterally rotates arm

118
Q

Origin + Insertion of Infraspinatus

A 
O = Infraspinous fossa 
I = Greater tubercle of humerus
119
Q

Function of Teres Major

A

Medially rotate arm

120
Q

Origin + Insertion of Teres Major

A 
O = Inferior angle of scap
I = Crest of lesser tubercle of humerus
121
Q

Innervation of Teres Major

A

Lower subscapular nerve

122
Q

Function of Teres Minor

A

Laterally rotates arm

123
Q

Origin + Insertion of Teres Minor

A 
O = Superior half of lateral border of scap
I = Greater tubercle of humerus
124
Q

Innervation of Teres Minor

A

Axillary nerve

125
Q

Function of Biceps Brachii

A

Flexes forearm at elbow joint, supinates forearm, flexes arm at shoulder joint

126
Q

Origin + Insertion of Biceps Brachii

A

O = Long - Supraglenoid tubercle
Short - Coracoid process
I = Radial tuberosity and bicipital aponeurosis → antebrachial fascia

127
Q

Innervation of the anterior compartment of the arn

A

Musculocutaneous nerve

128
Q

Function of Coracobrachialis

A

Adducts and flexes arm

129
Q

Origin + Insertion of Coracobrachialis

A 
O = Coracoid process
I = Medial aspect of humerus
130
Q

Function of Brachialis

A

Flexes forearm at elbow (most effective when pronated)

131
Q

Origin + Insertion of Brachialis

A 
O = Distal half of humerus
I = Coronoid process and tubercle of ulna
132
Q

Function of Triceps Brachii

A

Extends arm (long head), extends forearm at elbow joint

133
Q

Origin of Triceps Brachii

A

Long - infraglenoid tubercle
Lateral - above radial groove
Medial - below radial groove

134
Q

Insertion of Triceps Brachii

A

Olecranon of ulna

MEDI2100 - MS (5 decks)

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