Extrinsic Muscles Flashcards
Superficial Pectoral Muscles Origin
sternum
Superficial Pectoral Muscles Termination
greater tubercle of the humerus and cranial humeral border
Superficial Pectoral mm. Action
adduct the thoracic limb
Deep Pectoral m. Origin
sternum
Deep Pectoral m. Insertion
greater and lesser tubercles of humerus
Deep Pectoral m. Action
adduct thoracic limb and pull it caudally
Brachiocephalicus Origin
clavicular intersection
Brachiocephalicus Termination
distal cranial humerus, mastoid process of temporal bone, dorsal midline of neck
Brachiocephalicus Action
pull thoracic limb cranially (and/or) depress and pull head and neck laterally
Sternocephalicus Origin
thoracolumbar fascia
Sternocephalicus Termination
mastoid process of temporal bone
occipital bone
Sternocephalicus Action
depress head and neck; draw head and neck laterally
Sternohyoideus Origin
sternum
Sternohyoideus Termination
basihyoid bone
Sternothyroideus Origin
cranial aspect of sternum
Sternothyroideus Termination
thyroid cartilage
Omnotransversarius Origin
wing of the atlas