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.
Inspiration can strike anywhere as a result of anything. There is no one "prime mover" of inspiration.
The primary movement is called the Prime mover or Agonist
Legs, traps & forearms
quadriceps
your rectus abdominis is the prime mover in a crunch exercise or spinal flexion
biceps brachii
In the canine: the gluteal muscles (superficial, middle, deep).
Synergists as well as fixator muscles.
Do you mean flexion and (abd)uction?? If so, the prime mover would be the deltoid muscle with many smaller muscles assisting. If you are in fact meaning flexion and adduction, the prime mover would be the pectoralis major and the latissimus dorsi with many smaller muscles assisting.
Rhomboids Major and Minor are the primary muscles that Adduct the Scapula.
prime movers : muscle that initiate a particular movement synergism : muscles that have the same action of the prime mover antagonist : muscles that come into play to oppose a certain movement
Your mothers vajina bone
The muscle that is responsible for most of a movement is called a prime mover. It may also be called an agonist.