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Gross Anatomy 1 > Upper Extremity Muscles > Flashcards

Upper Extremity Muscles Flashcards

1
Q

What are the ligaments of the elbow

A

Ulnar collateral ligament, Radial collateral ligament, annular ligament

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2
Q

What are the proximal row of carpals from lateral to medial

A

Scaphoid-Lunate-Triquetral- pisifrom

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3
Q

What are the distal row of carpals from lateral to medial

A

Trapezium-trapezoid-capitate-hamate

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4
Q

What is a good mnemonic for the carpal bones

A

Some Lovers Try Positions That They Can’t Handle

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5
Q

Muscles of the superficial back and posterior shoulder include (4)

A

Latissimus Doris, trapezius, Rhomboid Major, Rhomboid Minor

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6
Q

What is the Origin of latissimus dorsi

A

SP of T7-T12, Thoracolumbar fascia, iliac crest, ribs 10-12

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7
Q

What is the insertion of latissimus dorsi

A

Floor of bicipital groove

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8
Q

What aer the actions of latissimus Dorsi

A

Extends, adducts, medial rotation of humerus. Pulls body while climbing. Unilateral lateral flexion, rotation, and extension of thorax

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9
Q

What nerve innervates Latissimus Dorsi and what segments

A

thoracodorasal Nerve C6-C8

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10
Q

What is the vasculature of latissimus dorsi

A

Thoracodorsal artery

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11
Q

What is the origin of trapezius

A

EOP, medial 1/3 of superior nuchal line, nuchal ligament, SP of C7-T12

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12
Q

What is the insertion of trapezius

A

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

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13
Q

What are the actions of the superior trapezius fibers

A

Elevation of scapula

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14
Q

What are the actions of middle trapezius fibers

A

Retreat the scapula

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15
Q

What is the action of lower trapezius fibers

A

Depress the scapula

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16
Q

What is the action of upper and lower trapezius fibers

A

Contact to laterally rotate scapula

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17
Q

When the trapezius fixes the scapula what actions occur

A

Extension and lateral rotation of head

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18
Q

What is the innervation (motor+sensory) of trapezius

A

Motor: Cranial Nerve XI
Sensory: C3 and C4

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19
Q

What is the vasculature of the trapezius

A

Transverse cervical or superficial cervical artery

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20
Q

What is the origin of rhomboid major and minor

A

Minor: nuchal ligament, SP of C7-T1
Major: SP of T2-T5

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21
Q

What is the insertion of Rhomboid major and minor

A

Major: Medial border of scapula above scapular spine
Minor: medial border of scapula from spine to inferior angle

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22
Q

What is the action of rhomboid major and minor

A

retraction and medial rotation of scapula

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23
Q

What is the innervation of rhomboid major and minor

A

Dorsal scapular nerve C5

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24
Q

What is the vasculature of rhomboid major and minor

A

Dorsal scapular artery

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25
Q

What is the origin of levator scapulae

A

Posterior tubercle of TP C1-C4

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26
Q

What is the insertion of Levator scapulae

A

Superior angle of scapula

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27
Q

What is the action of Levator scapulae

A

Elevates and medial rotation of scapula

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28
Q

What is the innervation of levator scapulae

A

Dorsal scapular nerve C5, C3 and C4

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29
Q

what is the vasculature of levator scapulae

A

Dorsal scapular artery

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30
Q

What muscles are innervated by dorsal scapular nerve

A

Rhomboid major, minor and levator scapulae

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31
Q

Dorsal scapular artery provides vasculature to which muscles

A

rhomboid major, minor, and levator scapulae

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32
Q

What are the muscles of the posterior shoulder

A

Deltoid, supraspinatus, Infraspinatus, Teres major and Minor, and Subscapularis

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33
Q

What is the origin of Deltoid

A

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

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34
Q

What is the insertion of deltoid

A

Deltoid tuberosity

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35
Q

What are the 3 parts of the deltoid

A

Anterior, middle, and posterior parts

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36
Q

What is the action of anterior deltoid

A

Flexion and medial rotation of arm, horizontal flexion and addiction

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37
Q

What is the action of middle deltoid

A

Abduction of arm

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38
Q

what is the action of posterior deltoid

A

Extension and lateral rotation of arm, horizontal abduction and lateral extension

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39
Q

What is the innervation of deltoid

A

Axillary Nerve (C5,C6)

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40
Q

What is the vasculature of deltoid

A

Posterior humeral circumflex artery

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41
Q

What is the origin of supraspinatus

A

Supraspinous fossa of scapula

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42
Q

What is the insertion of supraspinatus

A

Superior facet of greater tubercle of humerus

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43
Q

What is the action of supraspinatus

A

Assists deltoid, first 30 degrees of abduction of arm, stabilizes the glenohumeral joint

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44
Q

What is the innervation of supraspinatus

A

Suprascapular nerve C5

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45
Q

what is the vasculature of supraspinatus

A

Suprascapular artery

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46
Q

What is the origin of infraspinatus

A

infraspinous fossa of scapula

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47
Q

what is the insertion of infraspinatus

A

Middle facet of greater tubercle of humerus

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48
Q

What is the action of infraspinatus

A

Lateral rotation, stabilizes glenohumeral joint, some extension

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49
Q

What is the innervation of infraspinatus

A

Suprascapular nerve C5

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50
Q

what is the vasculature of infraspinatus

A

Suprascapular and circumflex scapular artery

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51
Q

Where does Teres major originate

A

Posterior surface of inferior angle of scapula

52
Q

where does Teres major insert

A

Medial lip of intertubercular groove of humerus

53
Q

what is the action of Teres major

A

Adducts and medial rotation of humerus

54
Q

What is the innervation of Teres major

A

Lower subscapular nerve C6

55
Q

what is the vasculature of Teres major

A

Circumflex scapular artery

56
Q

Where does Teres minor sit

A

On top of Teres major

57
Q

Where does Teres minor originate

A

Middle part of lateral border of scapula

58
Q

what is the insertion of Teres minor

A

Inferior facet of greater tubercle of humerus

59
Q

what is the action of Teres minor

A

Lateral rotation of arm, stabilizes glenohumeral joint, lateral extension of flexed arm

60
Q

what is the innervation of Teres minor

A

Axillary nerve C5-C6

61
Q

What is the vasculature of Teres minor

A

Circumflex scapular artery

62
Q

What is the origin of subscapularis

A

Subscapular fossa

63
Q

What is the insertion of subscapularis

A

Lesser tubercle of humerus

64
Q

What is the action of subscapularis

A

Medial rotation of humerus, stabilizes glenohumeral joint, helps adduct

65
Q

what is the innervation of subscapularis

A

Lower and upper subscapular nerves C5-C7

66
Q

What are the muscles of the rotator cuff

A

Subscapularis, supraspinatus, infraspinatus, Teres minor

67
Q

Which muscle is most commonly injured in the rotator cuff

A

Supraspinatus

68
Q

Damage to what muscle can cause scapular winging

A

Serratus anterior

69
Q

What is the origin of serratus anterior

A

External, lateral surfaces of ribs 1-8

70
Q

what is the insertion of serratus anterior

A

Anterior medial border of scapula

71
Q

What is the action of serratus anterior

A

Prostration and external rotation of scapula, helps depress scapula

72
Q

Serratus anterior innervation is

A

Long thoracic nerve (C5-C7,c8

73
Q

Vasculature of serratus anterior is

A

Lateral thoracic and Thoracodorsal artery

74
Q

Serratus posterior superior is found

A

Deep to rhomboids

75
Q

What is the origin of serratus posterior superior

A

Ligamentum nuchae, Sp C7-T2

76
Q

What is the insertion of serratus posterior superior

A

Upper border of ribs 2-5

77
Q

What is the action of serratus posterior superior

A

Elevation of ribs 2-5 (breath in)

78
Q

What is the innervation of serratus posterior superior

A

Intercostal nerve 2-5

79
Q

Where is serratus posterior inferior found

A

Deep to latissimus dorsi

80
Q

what is the origin of serratus posterior inferior

A

SP of T11-12

81
Q

What is the insertion of serratus posterior inferior

A

Inferior border of ribs 9-12

82
Q

What is the action of serratus posterior inferior

A

Depression of ribs 9-12 (exhalation)

83
Q

what is the innervation of serratus posterior inferior

A

Intercostal NN 9-12

84
Q

What are the origins of pectoralis major

A

Clavicular: anterior surface of medial half of clavicle
Sternal: anterior sternum, costal cartilage of ribs 1-6, aponeurosis of external oblique

85
Q

What is the insertion of pectoralis major

A

Lateral lip of intertubercular groove of humerus

86
Q

what is the action of pectoralis major

A

Adduction, medial rotation of humerus
Brings scapula anterior and inferior

87
Q

What is the innervation of pectoralis major

A

lateral and medial pectoral nerves
Clavicular: C5-C8
Sternal: C7-C8

88
Q

What is the vasculature of pectoralis major

A

Pectoral branch of thoracoacrominal trunk

89
Q

What is the origin of pectoralis minor

A

Ribs 3-5,

90
Q

What is the insertion of pectoralis minor

A

Coracoid process

91
Q

What is the action of pectoralis minor

A

Stabilize scapula, brings it inferior and anterior

92
Q

What is the innervation of pectoralis minor

A

Medial pectoral nerve C8-T1

93
Q

What is teh vasculature of pectoralis minor

A

Pectoral branch of thoracoacrominal trunk

94
Q

What is the origin of subclavius

A

Junction of rib 1 and costal cartilage

95
Q

What is the insertion of subclavius

A

Inferior surface of middle 1/3 of clavicle

96
Q

What is the action of subclavius

A

Anchors and depresses clavicle

97
Q

What is the innervation of subclavius

A

Nerve to subclavius C5

98
Q

What is the vasculature o subclavius

A

Clavicular branch of thoracoacrominal trunk

99
Q

What is the origin of external intercostals

A

Lower border of ribs 1-11

100
Q

What is the insertion of external intercostals

A

Upper border of ribs 2-12

101
Q

what is the action of external intercostals

A

Elevation of ribs during inhale

102
Q

Innervation and vasculature of external intercostals is

A

Intercostal nerves and intercostal artery

103
Q

internal intercostals origin is

A

Superior border of ribs 2-12

104
Q

Insertion of internal intercostals is

A

Inferior border of ribs 1-11

105
Q

Action of internal intercostals is

A

Depression of ribs during exhalation (forced)

106
Q

Innervation and vasculature of internal intercostals is

A

Intercostal nerve and intercosal artery

107
Q

Innermost intercostals origin is

A

Found in lower thoracic region internal surface

108
Q

Insertion of innermost intercostals is

A

Internal surface of ribs 2-3 below origin

109
Q

Action of innermost intercostals is

A

Elevation of ribs to help inhale

110
Q

innervation and vasculature of innermost intercostals is

A

Intercostal nerve and intercostal artery

111
Q

What are the muscle of the posterior arm

A

triceps brachii and aconeus

112
Q

Triceps brachii is made up of

A

Long, lateral, and medial head

113
Q

Origin of triceps brachii long head is

A

Infraglenoid tubercle of scapula

114
Q

Origin of triceps brachii lateral head is

A

Posterior surface of humerus to radial groove

115
Q

Origin of triceps brachii medial head is

A

Posterior humerus inferior to radial groove

116
Q

Insertion of triceps brachii is

A

Olecranon process and fascia of forearm

117
Q

What is the action of triceps brachii

A

Extension of elbow,
Long head: extends and adducts at shoulder. Help stabilize humerus

118
Q

Long head of triceps brachii innervation is

A

Axillary nerve C5-C6

119
Q

lateral and medial head of triceps brachii innervation is

A

Radial Nerve (C7-C8

120
Q

What is the vasculature of triceps brachii

A

Profunda brachii artery

121
Q

Aconeus origin is

A

Lateral epicondyle of humerus

122
Q

Insertion of aconeus is

A

Lateral olecranon process and proximal posterior ulna

123
Q

What is the action of aconeus

A

Helps extend elbow, stabilizes elbow

124
Q

What is the innervation of aconeus

A

Radial Nerve (c7-T1)

125
Q

What is vasculature of anconeus

A

Profunda brachii, recurrent interosseous artery

Gross Anatomy 1 (10 decks)

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