VMED5123 Extrinsic mm.

origin: first 2 sternebrae and usually part of the 3^rd ; median fibrous raphe between fellow muscles

origin: the deep abdominal fascia in the region of the xiphoid cartilage;

from the 2^nd (sometimes manubrium) to the xiphoid

*considered the abdominal slip

origin: Clavicle (clavicular intersection)

origin: clavicle (clavicular intersection)

origin: clavicle (clavicular intersection)

insertion: whole crest of the greater tubercle of the humerus

action: adduct limb when non-weight bearing;

prevent abduction when weight bearing

insertion: major portion partly muscular, partly tendonous on lesser tubercle of the humerus;

aponeurosis to the crest of the greater tubercle of the humerus;

caudal part to medial brachial fascia

action: pull trunk cranially and extend shoulder joint when weight bearing;

draw limb caudally and flex shoulder joint when non-weight bearing (adduct limb)

insertion: distal end of cranial border of the humerus

action: advance limb

extend shoulder

draw head and neck to the side

insertion: nuchal crest of occipital bone

cranial half of mid-dorsal fibrous raphe

action: advance limb

extend shoulder

draw head and neck to the side

insertion: mastoid part of temporal bone with sternomastoideus m.

action: advance limb

extend shoulder

draw head and neck to the side

origin: wing of the atlas (C1)

insertion: distal end of spine of scapula

action: advance limb and flex neck laterally

origin: median fibrous raphe of the neck from C3-T9

insertion: proximal 1/3 of the spine of the scapula

action: elevate and abduct the forelimb

origin: nuchal crest of occipital bone

median fibrous raphe of neck

spinous processes of T1-T7

insertion: dorsal border and adjacent surfaces of scapula

action: elevate forelimb and draw scapula against trunk

origin: The thoracolumbar fascia from the spinous processes of the lumbar and the last seven or eight thoracic vertebrae; a muscular attachment to the last two or three ribs.

insertion: The teres major tuberosity of the humerus and the teres major tendon.

action:To draw the free limb caudally as in digging; to flex the shoulder joint

origin: The transverse processes of the last five cervical vertebrae and the first seven or eight ribs ventral to their middle

insertion:The dorsomedial third of the scapula (serrated face)

action:To support the trunk and depress the scapula. 

*aids in inspiration