Synapses. Where two neurones meet, there is a tiny gap called a synapse. Signals cross this gap using chemicals. One neurone releases the chemical into the gap. The chemical diffuses across the gap and makes the next neurone transmit an electrical signal.In order to see this content you need to have both Javascript enabled and Flash installed. Visit BBC Webwise for full instructions. Page: 1  1. 2  2. 3  3.here two neurones meet, there is a tiny gap called a synapse. Signals cross this gap using chemicals. One neurone releases the chemical into the gap. The chemical diffuses across the gap and makes the next neurone transmit an electrical signal.
The Main Ingredient may refer to: 1  The Main Ingredient (band) , an American soul and R&B group. 2  The Main Ingredient (Pete Rock & CL Smooth album) , 1994.
Active ingredients are the substances in drugs that are responsible for the beneficial health effects experienced by consumers. The active ingredient in a pharmaceutical drug is called an active pharmaceutical ingredient (API). An example of an API is the acetaminophen contained in a pain relief tablet. The active ingredient in a biological drug is called a bulk process intermediate (BPI).