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.
Related words. 1  poke noun. 2  poke around phrasal verb. 3  poke fun (at) phrase.  a pig in a poke 1  phrase. poke a hole in something phrase.  poke/shove/stick your nose into something 1  phrase. poke about phrasal verb at poke around.  poke fun at phrase at make fun of.