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Anatomy > Muscles of the Forelimb Part 2 > Flashcards

Muscles of the Forelimb Part 2 Flashcards

1
Q

latissimus dorsi origin

A

thoracolumbar fascia from spinous process of lumbar and last 7-8 thoracic vertebrae; muscular attachment to last 2-3 ribs
aponeurotic CT

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2
Q

latissimus dorsi insertion

A

teres major tuberosity of the humerus and teres major tendon

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3
Q

latissimus dorsi action

A

flex shoulder joint and adduction

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4
Q

latissimus dorsi innervation

A

thoracodorsal nerve

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5
Q

Deep layer

A

deep pectoral, subclavian, rhomboid, serrates ventralis

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6
Q

Which portion of the deep pectoral is deep?

A

cranial

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7
Q

which portion of the deep pectoral is superficial?

A

caudal

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8
Q

what is the official name of deep pectoral?

A

pectoralis profundus

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9
Q

what is the official name of subclavian muscle?

A

subclavius

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10
Q

what is the official name of the rhomboid muscle?

A

rhomboideus

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11
Q

what is the official name of the ventral serrate muscle?

A

serrates ventralis

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12
Q

deep pectoral origin

A

ventral part of the sternum and median raphe

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13
Q

deep pectoral insertion

A

lesser tubercle of the humerus, crest of greater tubercle

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14
Q

deep pectoral action

A

pull the trunk cranially, extend shoulder when contracts, adduct limb

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15
Q

is origin or insertion static

A

origin

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16
Q

is origin or insertion mobile

A

insertion

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17
Q

How many parts of the rhomboideus

A

cervical, thoracic, capital

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18
Q

Where does the rhomboideus lie?

A

deep to trapezius

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19
Q

What part of the rhomboideus gives extension to the head

A

capitis

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20
Q

rhomboideus insertion

A

medial aspect of the dorsal part of the scapula

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21
Q

rhomboideus cervicis origin

A

spinous process of cervical vertebrae (C1-C3) and medial raphae

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22
Q

rhomboideus thoracis origin

A

spinous processes of the cranial thoracic vertebrae (t4-T7)

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23
Q

rhomboideus capitis origin

A

occipital crest or nuchal crest

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24
Q

rhomboideus action

A

abduction and adduction of forelimb

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25
Q

characteristic of serrates ventralis

A

serrated edge (fan shaped)

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26
Q

serratus ventralis insertion

A

dorsomedial third of the scapula (serrated face)

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27
Q

serratus ventralis action

A

support trunk and depress scapula

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28
Q

serratus ventralis innervation

A

ventral branches of cervical spinal nerves and long thoracic nerve C7

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29
Q

serratus ventralis origin

A

transverse process of C3-C7 and first 7-8 ribs ventral to middle

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30
Q

serratus ventralis has two portions

A

cervicis and thoracis

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31
Q

lateral shoulder muscles

A

supraspinatus, infraspinatus, deltoid, teres minor

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32
Q

medial shoulder muscles

A

teres major, subscapular, coracobrachial

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33
Q

supraspinous fibers

A

two different fiber directions

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34
Q

which is larger: supraspinatus or infraspinatus?

A

supraspinatus

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35
Q

supraspinatus is covered by cervical part of:

A

trapezius and omotransversarius

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36
Q

supraspinatus origin

A

supraspinous fossa

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37
Q

supraspinatus insertion

A

greater tubercle of the humerus

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38
Q

supraspinatus action

A

extends shoulder joint when contracts, stabilizes shoulder

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39
Q

supraspinatus innervation

A

supra scapular nerve

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40
Q

what is another term for extend

A

fix, stabilize

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41
Q

infraspinatus shape

A

fusiform (spindle)

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42
Q

infraspinatus origin

A

infraspinous fossa

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43
Q

infraspinatus insertion

A

lateral side of the greater tubercle of the humerus

44
Q

bursa is found between

A

tendon and caudal part of the greater tubercle

45
Q

infraspinatus action

A

extend or flex, abduct shoulder, rotate shoulder laterally

46
Q

infraspinatus action when weight baring

A

prevent medial rotation, lateral stability to shoulder

47
Q

infraspinatus innervation

A

suprascapular nerve

48
Q

deltoideus heads

A

pars scapularis (scapular) and pars acromialis (acromion) which FUSE

49
Q

deltoideus origin

A

spine and acromial process of scapula

50
Q

deltoideus insertion

A

deltoid tuberosity

51
Q

deltoideus action

A

flex shoulder

52
Q

deltoideus innervation

A

axillary nerve

53
Q

teres minor shape

A

wedge

54
Q

teres minor origin

A

infraglenoid tubercle and distal third of caudal border of scapula

55
Q

teres minor insertion

A

teres minor tuberosity of humerus

56
Q

teres minor action

A

flex shoulder, rotate shoulder laterally, prevent medial rotation when weight baring

57
Q

teres minor innervation

A

axillary nerve

58
Q

is teres minor lateral or medial

A

lateral

59
Q

is teres major lateral or medial

A

medial

60
Q

teres major origin

A

caudal angle and caudal border of scapula, caudal surface of subscapularis

61
Q

teres major insertion

A

teres major tuberosity of the humerus

62
Q

teres major action

A

flex shoulder, rotate shoulder medially, prevent lateral rotation when weight baring

63
Q

teres major innervation

A

axillary nerve

64
Q

coracobrachialis shape

A

spindle

65
Q

coracobrachialis location

A

crosses medial surface of shoulder obliquely

66
Q

coracobrachialis has what on top

A

synovial sheath

67
Q

coracobrachialis muscle belly

A

distal to lesser tubercle and medial to origin of medial head of triceps

68
Q

coracobrachialis origin

A

coracoid process of the scapula

69
Q

coracobrachialis insertion

A

crest of lesser tubercle of humerus proximal to teres major tuberosity

70
Q

coracobrachialis action

A

adduct, extend, stabilize shoulder

71
Q

coracobrachialis innervation

A

musculocutaneous nerve

72
Q

the conjoined tendon of teres major and latissimus doors crosses:

A

insertion of coracobrachialis

73
Q

subscapularis origin

A

the sub scapular fossa

74
Q

subscapularis insertion

A

lesser tubercle of the humerus

75
Q

subscapularis action

A

adduct, extend, medially stabilize shoulder

76
Q

subscapularis action weight bearing

A

rotate shoulder medially and prevent lateral rotation

77
Q

subscapularis innervation

A

subscaupular nerve

78
Q

muscles of the elbow

A

brachial, biceps, triceps, anconeus, tensor of ante brachial fascia

79
Q

tensor fasciae antebrachii shape

A

thin strap

80
Q

tensor fasciae antebrachii origin

A

fascia of lateral latissimus dorsi

81
Q

tensor fasciae antebrachii insertion

A

olecranon

82
Q

tensor fasciae antebrachii action

A

elbow extension

83
Q

tensor fasciae antebrachii innervation

A

radial

84
Q

brachialis shape

A

long, thin

85
Q

brachialis lies where

A

in brachial spiral groove

86
Q

brachialis origin

A

lateral aspect of proximal 1/3 of humerus

87
Q

brachialis insertion

A

ulnar and radial tuberosities

88
Q

brachialis action

A

elbox flexion

89
Q

brachialis innervation

A

musculocutaneous nerve

90
Q

biceps brachii - how many heads

A

1

91
Q

biceps brachii shape

A

fusiform (spindle)

92
Q

biceps brachii splits where

A

at distal extremity, splits into two insertions

93
Q

How many heads in triceps brachii?

A

4 - lateral, long, medial, accessory

94
Q

Which triceps brachii heads are lateral?

A

lateral, long, part of accessory

95
Q

which triceps brachii heads are medial?

A

long, accessory, medial

96
Q

triceps brachii insertion

A

olecranon tuber

97
Q

triceps brachii long head origin

A

caudal border of scapula

98
Q

triceps brachii lateral head origin

A

tricipital line of humerus

99
Q

triceps brachii accessory head origin

A

neck of humerus

100
Q

triceps brachii medial head origin

A

crest of lesser tubercle

101
Q

triceps brachii action

A

shoulder flexion (long head only) and extension of elbow

102
Q

triceps brachii innervation

A

radial nerve

103
Q

anconeus origin

A

lateral supracondylar crest, medial and lateral humeral epicondyles

104
Q

anconeus insertion

A

lateral aspect of proximal ulna

105
Q

anconeus action

A

elbow extension

106
Q

anconeus innervation

A

radial nerve

Anatomy (29 decks)

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