Trapezius and Levator Scapulae
It depends on the movement. The prime movers for rotation are the splenius capitis and the sternocleidomastoid.
The trapezius muscle extends from the upper back to the back of the neck. Its main functions are to support the arm and to move the shoulder blade.
synergists: trapezius, teres major and minor, flexors, biceps brachiiantagonists: deltoid, extensors, triceps brachii
The Prime Mover was created on 1961-03-24.
The prime mover is the Latissimus Dorsi.
A prime mover is a machine which transforms energy to/from thermal or electrical, or pressure from/to mechanical form. Examples of a prime mover are engines or turbines.
Pronator quadratus is the prime mover in pronation of the hand.
The masseter is the prime mover of the jaw closure.
A prime mover is the muscle that has the most influence in one direction on the joint it acts on. For example the prime mover in extension of the forearm is the triceps.
The prime muscle differs depending on the degree of abduction. From 1 to 20 degrees it is the supraspinatus muscle, from 20 to 90 degrees it is the deltoid and from 90 degree and above the action is done by that rotate the scapula (trapezius and serratus anterior).
Prime Mover - 2009 is rated/received certificates of: Australia:M