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Anatomy > Muscles of the Forelimb Part 1 > Flashcards

Muscles of the Forelimb Part 1 Flashcards

1
Q

Extrinsic musculature

A

synsarcosis, forms a dynamic sling

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2
Q

Extrinsic musculature origin

A

neck, back and thoracic region

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3
Q

Extrinsic musculature insertion

A

scapula or humerus

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4
Q

Extrinsic musculature can be divided into:

A

superficial or deep

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5
Q

Extrinsic musculature lies ______ to the intrinsic muscles of the cranial trunk

A

superficial

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6
Q

intrinsic musculature

A

bridges one or more joints of the same limb

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7
Q

intrinsic musculature movement

A

extends and flexes joints, abducts, adducts, and rotates joint structures

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8
Q

superficial extrinsic muscles

A

Brachiocephalicus, Trapezius, Sternocephalicus, Omotransversarius, Latissimus dorsi, superficial pectoral

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9
Q

deep extrinsic muscles

A

deep pectoral, subclavius, rhomboideus, serrates ventralis

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10
Q

is superficial extrinsic muscle ascending or descending?

A

descending

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11
Q

is deep extrinsic muscle ascending or descending?

A

ascending

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12
Q

What two muscles are the exception to being extrinsic or intrinsic?

A

sternocleidomastoid and sternocephalic

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13
Q

1

A

sternocephalicus

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14
Q

2 overall term

A

brachiocephalicus

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15
Q

2 top portion

A

cleidocervicalis (right) and cleidomastoid (left)

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16
Q

2 bottom portion

A

cleidobrachialis

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17
Q

3

A

omotransversarius

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18
Q

5 overall term

A

trapezius

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19
Q

5 cranial portion

A

cervical trapezius

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20
Q

5 caudal portion

A

thoracic trapezius

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21
Q

6

A

deltoideus

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22
Q

7

A

latissimus dorsi

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23
Q

8

A

tricep (long and lateral)

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24
Q

9

A

pectoralis profundus

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25
Q

The brachiocephalicus is made up of 3 parts. What are they?

A

Cleidocephalicus, Cleidomastoid, Cleidobrachialis

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26
Q

Brachiocephalicus innervation

A

accessory spinal nerve

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27
Q

Brachiocephalicus origin

A

nuchal ligament

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28
Q

Brachiocephalicus insertion

A

clavicular intersection

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29
Q

the cleidobrachialis attaches to:

A

distal 1/3 cranial surface of humerus

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30
Q

Brachiocephalicus is what kind of muscle?

A

compound muscle

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31
Q

The cervical portion of the cleidocephalicus is bounded cranially by:

A

occipital part of the sternocephalicus

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32
Q

The cervical portion of the cleidocephalicus is bounded caudally by:

A

trapezius

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33
Q

The cleidocephalicus attaches to:

A

median raphae and nuchal crest

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34
Q

the cleidomastoid attaches to:

A

mastoid process

35
Q

origin

A

attachment, proximal

36
Q

insertion

A

distal

37
Q

trapezius muscle characteristics

A

triangular, thin, flat

38
Q

Trapezius is divided into two parts:

A

cervical and thoracic

39
Q

Trapezius is bounded cranially by:

A

cleidocephalicus

40
Q

Trapezius is bounded caudally by:

A

latissimus dorsi

41
Q

Trapezius action

A

abduct forelimb (elevates)

42
Q

trapezius insertion

A

scapular spine

43
Q

trapezius origin

A

supraspinous ligament & nuchal ligament

44
Q

aponeurosis

A

provides attachment for wide muscles

45
Q

Trapezius overlaps

A

latissimus dorsi GET CLARIFICATION

46
Q

What overlaps the trapezius?

A

cleidocephalicus GET CLARIFICATION

47
Q

Nuchal ligament origin

A

spinous process of T1

48
Q

nuchal ligament insertion

A

caudal aspect of spinous process of the axis

49
Q

Sternocephalicus two parts:

A

pars mastoideus, pars occipitalis

50
Q

Ventral portion of sternocephalicus

A

pars mastoideus

51
Q

dorsal portion of sternocephalicus

A

pars occipitalis

52
Q

How many muscle bellies are on the sternocephalicus?

A

2

53
Q

What crosses the sternocephalicus obliquely?

A

jugular vein

54
Q

Pars occipitalis characteristics

A

flat, thin

55
Q

pars mastoideus characteristics

A

thick, rounded, the “chief”

56
Q

Pars occipitalis insertion

A

nuchal crest

57
Q

pars mastoideus insertion

A

mastoid process

58
Q

sternocephalicus origin

A

manubrium sterni

59
Q

Sternocephalicus action

A

draw head and neck to side

60
Q

sternocephalicus innervation

A

accessory nerve and ventral branches of cervical nerves

61
Q

omotransversarius characteristics

A

straplike

62
Q

omotransversarius origin

A

scapular spine

63
Q

omotransversarius insertion

A

wing of atlas

64
Q

omotransversarius innervation

A

accessory nerve

65
Q

omotransversarius is deep or superficial to cleidocephalicus

A

deep

66
Q

omotransversarius is next to what lymph node

A

superficial cervical lymph node

67
Q

Superficial pectoral muscles have two parts:

A

descending and transverse

68
Q

superficial pectoral characteristics

A

caudal border = thin
cranial border = thick/round

69
Q

descending pectoral characteristics

A

smaller, superficial

70
Q

descending pectoral origin

A

1st sterbebra

71
Q

descending pectoral insertion

A

crest of the greater tubercle of the humerus

72
Q

transverse pectoral origin

A

first 2-3 sternebrae

73
Q

transverse pectoral insertion

A

crest of the greater tubercle of the humerus

74
Q

deep =

A

ascending

75
Q

superficial pectoral action

A

adduct limb

76
Q

Superficial pectoral muscle extends from:

A

sternum to humerus

77
Q

cranial portion of superficial pectoral

A

descending

78
Q

caudal portion of superficial pectoral

A

transverse

79
Q

superficial pectoral function when weight baring

A

prevent adduction

80
Q

what nerve is found below the transverse muscle

A

brachioplexis

81
Q

superficial pectoral innervation

A

cranial pectoral nerve and accessory spinal nerve

82
Q

axillary region

A

armpit

83
Q

superficial pectoral thickness increases going:

A

caudally

Anatomy (29 decks)

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