20: Raphael. The left arm activates trapezius
and other related muscles.
22: Raphael. Right arm bent, raised. “The
trapezius moves over the superior angle of the scapula (E), which
it holds against the rib cage, and then inserts into the spine
and the acronmion process (N) of the scapula.”
28: Tiepolo. Left scapula retraction. Right
scapula protraction.
