Question

multiple select question
select all that apply
the action of the trapezius is to: (select all that apply)
extend the head
flex the shoulder
rotate the arm
flex the head
adduct the scapula

Explanation:

The trapezius muscle can extend the head and adduct the scapula. It is not primarily responsible for flexing the shoulder, rotating the arm, or flexing the head.

Answer:

extend the head, adduct the scapula