The motor neuron has a Resting Potential , Action Potential is sent from CNS, Action Potential arrives at terminal, Terminal negative charge becomes positive, consequently opening voltage-gated calcium channels, Calcium ions flood into the terminal and bind with vesicles which house acetylcholine (neurotransmitter), Vesicles fuse with terminal membrane, releasing acetylcholine into the synaptic cleft/neuromuscular junction, Acetylcholine binds with receptors at the ligand-gated sodium channels, opening them, Sodium ions flood into the muscle fibre membrane, making this increase in positive charge, An Action Potential is sent through the muscle, contracting it, When acetylcholine is removed from the junction and receptors via diffusion or an enzyme, muscle contraction stops.

Neuromuscular Control

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?