Succinylcholine Mechanism of Action: Understanding Muscle Relaxation and Fasciculations

Question
since succinylcholine binds to the Ach receptors at the motor end plate, how can it produce muscle relaxation?

Also, by what mechanism do fasciculations occur following administration of succinylcholine?

Thank you in advance!

Answer
It is called a depolarizing neuro-muscular blocker, meaning that it binds to the receptor, and activates it, then blocks it from further activation from ACH.  So when someone gets this medicine, IV, they go rigid for a few seconds, then are paralyzed and relaxed for the duration of the medicine, which is only a few minutes.

Hope this helps...