IB Psychology: Neurotransmission

Nerve cells, called neurons, are one of the building blocks of behaviour. It is estimated that there are between 10 and 100 billion neurons in the nervous system and that neurons make 13 trillion connections with each other. The neurons send electrochemical messages to the brain so that people can respond to stimuli—either from the environment or from internal changes in the body.The following video explains how the...


