Muscle Movement that assists a Prime Mover in performing the movement.
Synarthrosis
An immovable joint.
Synaptic Vesicle
The Vesicle present in the Axon of Neutons; Contains Neurotransmitters.
Synaptic Knob
The expanded end of the Motor Nerve at the Myoneural Junction.
Synaptic Cleft
The space between the nerve and Postsynaptic Structure (i.e. nerve and muscle, nerve and nerve)
Sympathetic Tone
Continuous discharge of impulses in the Sympathetic Nerves.
Sympathetic Division
The part of the Autonomic Nervous System that exits from the Thoracolumbar Region.
Suture
A fibrous joint (i.e. Coronal Suture); Term also used for stitch or material used for surgery.