The Trapezius muscles are a set of
found in cats.
They are three thin flat muscles that cover the back, and to a lesser
extent, the neck. They pull the scapula toward the mid dorsal line,
anteriorly, and posteriorly.
The most anterior of the trapezius muscles, it is also the largest. Its
fibers run obliquely to the ventral surface. Origin, superior nuchal line and
median dorsal line, Insertion, clavicle, Action, draws the clavicle dorsal and
towards the head.
Acromiotrapezius is the middle trapezius muscle. It covers the dorsal and
lateral surfaces of the scapula. Origin, neural spines of the cervical
vertebrae, Insertion, In the metacromion process and fascia of clavotrapezius,
Action, draws the scapula to the dorsal, and holds the two scpula together.
Spinotrapezius, also called thoracic trapezius, is the most posterior of the
three. It is triangular shaped. Posterior to the acromiotrapezius and overlaps
latissimus dorsi on the front. Origin, neural spines of the thoracic vertebra,
Insertion, scapular fascia, Action, draws the scapula to the dorsal and caudal