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Upper Limb Flashcards

0
Q

Insertion of Pectoralis Major

A

lateral lip of intertubercular groove

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1
Q

Origin of Pectoralis Major

A

clavicular head: anterior surface of medial half of clavicle

sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

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2
Q

Innervation of Pectoralis Major

A

lateral and medial pectoral nerves
clavicular head C5, C6
sternocostal head C7, C8, T1

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3
Q

Actions of Pectoralis Major

A

adducts and medially rotates shoulder joint, draws scapula anteriorly and inferiorly

alone, clavicular head flexes shoulder joint and sternocostal head extends it from flexed position

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4
Q

Origin of Pectoralis Mino

A

3rd-5th ribs near their costal cartilages

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5
Q

Insertion of Pectoralis Minor

A

superior surface and medial border of coracoid process

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6
Q

Innervation of Pectoralis Minor

A

medial pectoral nerve C8, T1

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7
Q

Actions of Pectoralis Minor

A

stabilizes scapula by drawing anterior and inferiorly against thoracic wall

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8
Q

Origin of Subclavius

A

junction of 1st rib and its costal cartilage

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9
Q

Insertion of Subclavius

A

inferior surface of middle 1/3 of clavicle

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10
Q

Innervation of Subclavius

A

nerve to subclavius C5, C6

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11
Q

Actions of Subclavius

A

anchors and depresses clavicle

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12
Q

Origin of Serratus Anterior

A

external surfaces of lateral part of 1st-8th ribs

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13
Q

Insertion of Serratus Anterior

A

anterior surface of medial border of scapula

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14
Q

Innervation of Serratus Anterior

A

long thoracic nerve C5, C6, C7

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15
Q

Actions of Serratus Anterior

A

protracts scapula and holds against thoracic wall; rotates scapula

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16
Q

Origin of Deltoid

A

lateral 1/3 of clavicle, acromion, and spine of scapula

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17
Q

Insertion of Deltoid

A

deltoid tuberosity of humerus

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18
Q

Innervation of Detoid

A

axillary nerve C5, C6

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19
Q

Actions of Deltoid

A

clavicular part flexes and medially rotates shoulder joint;
acromial part abducts shoulder joint;
spinal part extends and laterally rotates shoulder joint

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20
Q

Origin of Supraspinatus

A

supraspinous fossa

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21
Q

Insertion of Supraspinatus

A

superior facet of greater tubercle of humerus

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22
Q

Innervation of Supraspinatus

A

suprascapular nerve C4, C5, C6

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23
Q

Action of Supraspinatus

A

initiates and assists deltoid with abduction of the shoulder joint; holds head of humerus in glenoid cavity

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24
Origin of Infraspinatus
infraspinous fossa
25
Insertion of Infraspinatus
middle facet of greater tubercle of humerus
26
Innervation of Infraspinatus
suprascapular nerve C5, C6
27
Actions of Infraspinatus
laterally rotates and extends shoulder joint; holds humeral head in glenoid cavity
28
Origin of Teres Minor
middle part of lateral border of scapula
29
Insertion of Teres Minor
inferior facet of greater tubercle of humerus
30
Innervation of Teres Minor
axillary nerve C5, C6
31
Actions of Teres Minor
laterally rotates and extends shoulder joint; holds humeral head in glenoid cavity
32
Origin of Teres Major
inferior part of lateral border of scapula and posterior surface of inferior angle of scapula
33
Insertion of Teres Major
medial lip of intertubercular sulcus of humerus
34
Innervation of Teres Major
lower subscapular nerve C5, C6
35
Actions of Teres Major
adducts and medially rotates shoulder joint
36
Origin of Subscapularis
subscapular fossa
37
Insertion of Subscapularis
lesser tubercle of humerus
38
Innervation of Subscaplaris
upper and lower subscapular nerve C5, C6, C7
39
Actions of Subscapularis
medially rotates and adducts shoulder joint; helps hold humeral head in glenoid cavity
40
Origin of Biceps Brachii
short head: tip of coracoid process of scapula long head: supraglenoid tubercles of scapula
41
Insertion of Biceps Brachii
radial tuberosity and fascia of forearm via bicipital aponeurosis
42
Innervation of Biceps Brachii
musculotaneous nerve C5, C6
43
Actions of Biceps Brachii
supinates forearm, and, when supinated, flexes the elbow joint; flexes shoulder joint; short head resists dislocation of shoulder
44
Origin of Brachialis
distal half of anterior surface of humerus
45
Insertion of Brachialis
coranoid process and tuberosity of ulna
46
Innervation of Brachialis
musculotaneous nerve C5, C6
47
Actions of Brachialis
elbow flexion in all positions
48
Origin of Coracobrachialis
tip of coracoid process of scapula
49
Insertion of Coracobrachialis
middle 1/3 of medial surface of humerus
50
Innervation of Coracobrachialis
musculotaneous nerve C5, C6, C7
51
Actions of Coracobrachialis
helps flex and adduct shoulder joint; resists dislocation of shoulder
52
Origin of Triceps Brachii
long head: infraglenoid tubercle of scapula lateral head: posterior surface of humerus, superior to radial groove medial head: posterior surface of humerus, inferior to radial groove
53
Insertion of Triceps Brachii
proximal end of olecranon of ulna and fascia of forearm
54
Innervation of Triceps Brachii
radial nerve C6, C7, C8
55
Actions of Triceps Brachii
chief extensor of elbow joint; long head extends shoulder joint and resists dislocation of humerus
56
Origin of Pronator Teres
humeral head: medial epicondyle of humerus | ulnar head: coranoid process of ulna
57
Insertion of Pronator Teres
middle convexity of lateral surface of radius
58
Innervation of Pronator Teres
median nerve C6, C7
59
Actions of Pronator Teres
pronates and flexes forearm
60
Origin of Flexor Carpi Radialis
medial epicondyle of humerus
61
Insertion of Flexor Carpi Radialis
base of 2nd (3rd) metacarpal
62
Innervation of Flexor Carpi Radialis
median nerve C6, C7
63
Actions of Flexor Carpi Radialis
flexes and abducts hand at wrist
64
Origin of Palmaris Longus
medial epicondyle of humerus
65
Insertion of Palmaris Longus
distal half of flexor retinaculum and palmar aponeurosis
66
Innervation of Palmaris Longus
median nerve C7, C8
67
Actions of Palmaris Longus
flexes hand and tenses palmar aponeurosis
68
Origin of Flexor Carpi Ulnaris
humeral head: medial epicondyle of humerus | ulnar head: olecranon and posterior border of ulna via aponeurosis
69
Insertion of Flexor Carpi Ulnaris
pisiform, hook of hamate, and 5th metacarpal
70
Innervation of Flexor Carpi Ulnaris
ulnar nerve C7, C8
71
Origin of Flexor Digitorum Superficialis
humero-ulnar head: medial epicondyle of humerus and coranoid process of ulna radial head: oblique line of radius
72
Insertion of Flexor Digitorum Superficialis
shafts of middle phalanges of medial four digits
73
Innervation of Flexor Digitorum Superficialis
median nerve C7, C8, T1
74
Actions of Flexor Digitorum Superficialis
flexes wrist joint | flexes proximal IP joints of middle four digits; acting more strongly, flexes proximal phalanges at MCP joints
75
Origin of Flexor Digitorum Profundus
proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
76
Insertion of Flexor Digitorum Profundus
bases of distal phalanges of 2nd-5th digits
77
Innervation of Flexor Digitorum Profundus
``` lateral part (digits 2-3): anterior interosseous of median nerve C8, T1 medial part (digits 4-5): ulnar nerve C8, T1 ```
78
Actions of Flexor Digitorum Profundus
flexes wrist joint flexes distal IP joints of digits 2-5; assists with wrist flexion flexes MCP joints
79
Origin of Flexor Pollicis Longus
anterior surface of radius and adjacent interosseous membrane
80
Insertion of Flexor Pollicis Longus
base of distal phalanx of thumb
81
Innervation of Flexor Pollicis Longus
anterior interosseous nerve, from median nerve C8, T1
82
Actions of Flexor Pollicis Longus
flexes wrist | flexes MCP and IP joints of thumb
83
Origin of Pronator Quadratus
distal 1/4 of anterior surface of ulna
84
Insertion of Pronator Quadratus
distal 1/4 of anterior surface of radius
85
Innervation of Pronator Quadraus
anterior interosseous nerve, from median nerve C8, T1
86
Actions of Pronator Quadratus
pronates forearm; deep fibers bind ulna and radius together
87
Insertion of Brachioradialis
lateral surface of distal end of radius proximal to styloid process
88
Insertion of Extensor Carpi Radialis Longus
dorsal aspect of base of 2nd metacarpal
89
Actions of Brachioradialis
relatively weak flexion of elbow joint; maximal when forearm is in midpronated position
90
Actions of Extensor Carpi Radialis Longus
extend and abduct wrist joint
91
Actions of Extensor Digitorum
extend wrist joint; | extend medial four fingers primarily at MCP joints; secondarily at IP joints
92
Origin of Supinator
crest of ulna, anular ligament, radial collateral ligament, lateral epicondyle of humerus, supinator fossa
93
Insertion of Supinator
lateral, anterior, and posterior surfaces of proximal third of radius
94
Actions of Abductor Pollicis Longus
extends wrist joint; abducts thumb and extends it at CMC joint
95
Actions of Extensor Pollicis Longus
extends wrist joint; | extends distal phalanx of thumb at IP joints; extends MCP and CMC joints
96
Actions of Extensor Pollicis Longus
extends wrist joint; | extends proximal phalanx of thumb at MCP joint; extends CMC joint

Muscles (4 decks)

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