Which term best describes the relationship of the deltoid and SITS muscles during shoulder abduction?
A) Prime movers
B) Antagonists
C) Synergists
D) Fixators
E) Adductors

Question

Quizplus · Accepted Answer

Synergists are muscles that work together to produce a specific movement. During shoulder abduction, the deltoid and SITS muscles (supraspinatus, infraspinatus, teres minor, and subscapularis) work together to elevate the arm. They are not antagonists because they do not oppose each other's movement, nor are they fixators since they do not stabilize or prevent unwanted movement. The deltoid is the prime mover for shoulder abduction, but in this specific question, we are looking for the relationship between the two muscle groups. Therefore, the best answer is C - synergists.

Which Term Best Describes the Relationship of the Deltoid and SITS