it's been several years since I've taken an anatomy class, but I believe it's the tricep.
The prime mover is the Latissimus Dorsi.
Latissimus Dorsi
The turbine
Aristotle never identifies the Prime Mover as god. In fact, he never particularly identifies it as conscious, although many have posited the likelihood of his having thought of it as conscious based upon clues in On the Soul, which paints the soul as a thing that is not moved in a locomotive way and yet is capable of causing that type of motion in the physical material of the body. Chris Henderson politguard.com
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The prime mover is the Latissimus Dorsi.
Latissimus Dorsi
latismus dorsi
Antagonist: Controls movement, opposite of prime mover Prime Mover: Main muscle that is directly responsible for movement Synergist: Aids in movement of muscle
The Diaphragm.
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.
An agonist (prime mover)
Prime mover in medical terms means the muscle that is mainly responsible for a given motion.
a prime mover is the main muscle that causes movement. In the case of the hip flexion, the prime mover would be the rectus femoris or the ilopsoas
antagonist
Quadricepts
The Gastrocnemius (calf muscle) is the primary mover. The Synergist (or assistor) muscle is the Soleus.