LCDC EXAM QUESTIONS AND ANSWERS RATED A+

Two main types of cells in the nervous system glia and neurons Glia Cells that out number neurons, cannot process information like neurons, make up the blood brain barrier that protects the brain from toxic chemicals in the blood Nervous system Consists of neurons, axons and receptors Receptors Proteins that help regulate activity of cells in the nervous system. Activation of receptors by neurotransmitters cause a change in activity of the target cell and many of the effects of psychoactive drugs are due to the ability to alter neurotransmitters. Neurons basic structural unit of the nervous system responsible for analyzing and transmitting information. There are more than 100 billion neurons in the nervous system Synapse Typical point of communication, gap between neurons is called the synaptic cleft.