Actions of Muscles (Thoracic Limb) Flashcards
Superficial Pectoral
adduct limb (non-weight bearing) & prevent abduction (weight-bearing)
Deep Pectoral
Supporting weight: pull trunk cranial, extend shoulder
Not supporting weight: draw limb in caudal, flex shoulder, adduct limb
Brachiocephalicus
extend shoulder & draw head/neck lateral
Sternocephalicus
draw head/neck lateral
Sternohyoideus
pull tongue/larynx caudal
Sternothyroideus
Pull tongue/larynx caudal
Omotransversarius
Advance limb or flex neck lateral
Trapezius
elevate & abduct forelimb
Rhomboideus
elevate forelimb & draw scapula against trunk
Latissimus Dorsi
draw free limb caudal
flex shoulder
Serratus Ventralis (Cervicis & Thoracis)
support trunk & depress scapula
Deltoideus
flex shoulder
Infraspinatus
extend or flex shoulder
Supraspinatus
extend & stabilize shoulder
Teres Minor
flex shoulder & rotate lateral
prevent medial rotation when weight bearing