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Gross Anatomy Exam 1 > extrinsic muscles > Flashcards

extrinsic muscles Flashcards

1
Q

origin superficial pectoral muscle

A

first three sternebrae; median fibrous raphe

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2
Q

insertion of superficial pectoral

A

crest of the greater tubercle of the humerus

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3
Q

action superficial pectoral

A

adduct the limb; prevent adduction of the limb

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4
Q

origin deep pectoral

A

sternum; median fibrous raphe

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5
Q

insertion deep pectoral

A

lesser tubercle of the humerus; greater tubercle of the humerus and its crest

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6
Q

action deep pectoral

A

when limb advanced and fixed: pull trunk cranially and extend the shoulder
when limb bearing weight: draw limb caudally and flex the shoulder

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7
Q

brachiocephalicus muscles

A

cleidobrachialis, clediocervicalis; clediomastoideus

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8
Q

origin clediobrachialis

A

clavicular intersection

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9
Q

insertion clediobrachialis

A

distal end of cranial humerus

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10
Q

action brachiocephalicus

A

advance the limb; extend shoulder, draw head and neck to the side

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11
Q

origin clediocervicalis

A

clavicular intersection

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12
Q

insertion clediocervicalis

A

middorsal fibrous raphe of the neck

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13
Q

origin clediomastoideus

A

clavicular intersection

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14
Q

insertion clediomastoideus

A

mastoid process of the temporal bone

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15
Q

attachments omotransversarius

A

wing of the atlas; distal end of the spine of the scapula

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16
Q

action omotransversarius

A

advance the limb; flex the neck laterally

17
Q

origin trapezius

A

median fibrous raphe of the neck; supraspinous ligament

18
Q

parts of trapezius

A

cervical and thoracic

19
Q

insertion trapezius

A

spine of scapula

20
Q

action trapezius

A

elevate and abduct limb

21
Q

parts rhomboideus

A

capitis, cervicis, thoracis

22
Q

origin rhomboideus

A

base of the skull; median fibrous raphe of neck. spinous processes of thoracic vertebrae

23
Q

insertion rhomboideus

A

spine of the scapula

24
Q

action rhomboideus

A

elevate and abduct the limb

25
Q

origin latissimus dorsi

A

thoracolumbar fascia; last few ribs

26
Q

insertion latissimus dorsi

A

teres major tuberosity of humerus via the teres major tendon

27
Q

action latissimus dorsi

A

draw limb caudally (digging); flex shoulder

28
Q

origin serratus ventralis

A

ribs; transverse processes of cervical vertebrae

29
Q

insertion serratus ventralis

A

serrated face of the scapula

30
Q

action serratus ventralis

A

support the trunk; depress the scapula

Gross Anatomy Exam 1 (16 decks)

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