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.
Word History: A pig in a poke is a colorful vernacular expression used to describe something offered in a manner that conceals its true nature or value. Naturally, a buyer cannot inspect the pig if it is covered by a pokeâthat is, a bag or sack. The word poke meaning bag is not confined to just the American Southâin many parts of Scotland, poke bag is still used of a little paper bag for carrying purchases like candy.