The action potential depolarizes the muscle membrane, and much of the action potential electricity flows through the center of the muscle fiber. Here it causes the
The definition of a poke is a push or a prod. An example of poke is the act of gently sticking a pen into a person's shoulder to get his attention. verb. Poke is defined as to prod or push. An example of poke is for a child to keep sticking his finger into his brother's arm. poked, pokâ²ing. 1  to push or jab with a stick, finger, etc.; prod.  Slang to hit with the fist.
Quick Answer. A poke on Facebook is the equivalent of tapping someone on the shoulder to say hi. It is a way to let other people know that you are thinking of them without going through all the trouble of sending private messages or posting publicly to their online wall. Continue Reading.