Extrinsic Muscles of the Thoracic Limb Flashcards
Origin of the superficial pectoral
The first two sternebrae, and usually part of the third; the fibrous raphe between adjacent muscles
Insertion of the superficial pectoral
The whole crest of the greater tubercle of the Humerus
Origin of the deep pectoral
The ventral part of the sternum and fibrous raphe between fellow muscles; the deep abdominal fascia in the caudal end of the sternum
Insertion of the deep pectoral
The major portion: lesser tubercle Humerus
An aponeurosis: greater tubercle and its crest
Caudal part: medial brachial fascia
Attachment of the cleidobrachialis
The distal end of the cranial border of the humerus
Attachment of the cleidocephalicus, pars cervicalis
Cranial half of the mid-dorsal fibrous raphe, sometimes the nuchal crest of the occipital bone
Attachment of the cleidocephalicus, pars mastoidus
Mastoid part of the temporal bone with the sternomastoideus muscle
Origin of the sternocephalicus
The first sternebra or manubrium
Insertion of the sterncephalicus
The mastoid part of the temporal bone and the nuchal crest of the occipital bone
Origin of the sternohyoideus
The first sternebra and the first costal cartilage
Insertion of the
sternohyoideus
The basihyoid bone
Origin of the sternothyroideus
The first costal cartilage
Insertion of the sternothyroideus
The caudolateral surface of the thyroid cartilage
Attachments of the omotransversarius
The distal end of the spine of the scapula; cranially, the transverse process of the atlas (C1)
Origin of the trapezius
The median raphe of the neck and the supraspinous ligament from the level of the 3rd C vertebra to the level of the 9th T vertebra
Insertion of the trapezius
The spine of the scapula
Origin of the rhomboideus
Capitis: the nuchal crest of the occipital bone
Cervicis: the median fibrous raphe of the neck Thoracis: the spinous processes of the first 7 T vertebrae
Insertion of the rhomboideus
The dorsal border and adjacent surfaces of the scapula
Origin of the latissimus dorsi
The thoracolumbar fascia from the spinous processes of the L vertebrae and the last 7 or 8 T vertebrae; there is a muscular attachment to the last two or three ribs
Insertion of the latissimus dorsi
The teres major tuberosity of the humerus and the teres major tendon
Origin of the serratus ventralis cervicis and thoracis
The transverse processes of the last 5 C vertebrae and the first 7 or 8 ribs ventral to their middle
Insertion of the serratus ventralis cervicis and thoracis
The dorsomedial 3rd of the scapula (serrated face)
