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.
The Facebook poke is a feature on the Facebook homepage, and it has a number of potential meanings. An option located on the right side of the page allows people to âpokeâ someone else with the click of a mouse or tap of a touch screen. When a user opts to poke someone, the person chosen receives a message that theyâve been poked and by who.