Your lungs.
Buucinator
what is the muscle that acts as a sucking
buccinator
buccinator and orbicularis oris
The involuntary muscle action of the alimentary canal is called peristalsis. It uses this muscle action to move food through.
antagonist muscle
THe action of the digastric muscle is to depress the mandible or evaluate the larynx
Acetylcholine (ACh) is the neurotransmitter that passes from neuron to muscle cells and it causes the Na/K channels to open allowing Na+ to flow into the cell triggering an action potential.
sucking my dick
synergistic muscle
buccinator
The frowning action.
Action potential duration in skeletal muscle is around 2 - 5 milliseconds.