The end-plate potential (EPP) at the neuromuscular juncti...

The end-plate potential (EPP) at the neuromuscular junction is best described as:

hard

AAn all-or-none action potential that always has the same amplitude

A graded depolarization that can trigger a muscle action potential if threshold is reached

CA hyperpolarization caused by Cl- influx only

DA signal that travels down the optic nerve

EA contraction of the tendon

Explanation

An EPP is a local graded depolarization produced by ACh receptor opening. If it reaches threshold, voltage-gated channels open and a muscle action potential occurs.

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Source: entermedschool.org

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