Actions of Muscles of the Thoracic Limb Flashcards
superficial pectoral muscles
adduct limb when non-weight bearing; prevent abduction when limb is weight bearing
deep pectoral
pull limb cranially and extend shoulder; draw limb caudally and flex shoulder when non-weight bearing; adduct limb
brachiocephalicus (all parts)
advance limb; extend shoulder; draw head and neck to side
sternocephalicus
draw head and neck to side
sternohyoideus
pull tongue and larynx caudally
sternothyroideus
pull tongue and larynx caudally
omotransversarius
advance limb or flex neck laterally
trapezius (both parts)
elevate and abduct limb
rhomboideus (all parts)
elevate limb, draw scapula against body
latissimus dorsi
draw limb caudally; flex shoulder
serratus ventralis cervicis and thoracis
support trunk, depress scapula
deltoideus
flex and abduct shoulder
infraspinatus
extend, flex shoulder; abduct and rotate shoulder laterally; stabilize joint
teres minor
flex shoulder, rotate shoulder laterally
supraspinatus
extend, stabilize shoulder