Thoracic Limb OIA's COMBO

Question 1

Superficial Pectoral m.

Answer 1

O: cranial sternum

I: greater tubercle crest and cranial humerus

A: adduct thoracic limb

Question 2

Deep (ascending) Pectoral m.

Answer 2

O: sternum

I: greater and lesser tubercles of humerus

A: adduct and pull thoracic limb caudally

Question 3

Brachiocephalicus m.

Answer 3

O: clavicular intersection

I: Cleidobrachialis: distal cranial humerus;
Cleidocephalicus: mastoid process of
temporal bone

A: non weight bearing: pull cranially;
depress and pull neck/head laterally

Question 4

Omotransversarius m.

Answer 4

O: wing of atlas (1st cervical vertebrae)

I: distal scapular spine

A: non weight bearing: pull cranially; depress and pull neck/head laterally

Question 5

Trapezius m.

Answer 5

O: Cervical: dorsal neck;
Thoracic: dorsal thorax

I: scapular spine

A: elevate thoracic limb

Question 6

Rhomboideus m.

Answer 6

O: Capital: occipital bone;
Cervical: dorsal neck;
Thoracic: dorsal thorax

I: dorsal scapula and/or scapular cartilage

A: elevate thoracic limb and depress the scapula to the trunk

Question 7

Serratus ventralis m.

Answer 7

O: Cervical: cervical vertebrae;
Thoracic: thoracic wall (ribs)

I: Scapular serrated face

A: support and/or elevate the trunk

Question 8

Latissimus dorsi m.

Answer 8

O: thoracolumbar fascia

I: teres major tuberosity of humerus

A: pull caudally;
non weight bearing: flex humeral joint;
weight bearing: extend humeral joint