NEUROMUSCULAR CONTROL

ACTION POTENTIAL released into AXON TERMINAL

Provokes SODIUM CHANNELS to open which release sodium particles into the AXON TERMINAL.

This then causes DEPOLARIZATION to occur which causes CALCIUM CHANNELS to open, thus releasing CALCIUM into the AXON TERMINAL.

CALCIUM then binds with VESICLES which then move to the front of the PRE-SYNAPTIC MEMBRANE.

Once the VESICLES reach the PRE-SYNAPTIC MEMBRANE, the vesicles release the CALCIUM into the SYNAPTIC CLEFT.

The Vesicles carrying the CALCIUM and SODIUM cross the SYNAPTIC CLEFT until they reach the ACH RECEPTORS at the muscle fiber front called the MOTOR END PLATE.

This then opens ION CHANNELS within the ACH RECEPTORS and allows both SODIUM and POTASSIUM to pass through.

The SODIUM pass through whilst POTTASIUM moves way from the muscle fiber, thus causing DEPOLARIZATION in the fiber.

DEPOLARIZATION spreads through the muscle fiber and across the sarcolemma.

The DEPOLARIZATION causes CALCIUM to appear in the muscle fiber, which is therefore used for contractions etc.