AP PSYCHOLOGY

Detailed explanation-1: -Glia outnumber neurons in some parts of the brain, but neurons are the key players in the brain. Neurons are information messengers. They use electrical impulses and chemical signals to transmit information between different areas of the brain, and between the brain and the rest of the nervous system.

Detailed explanation-2: -Action potentials are propagated along the length of axons and are the fundamental signal that carries information from one place to another in the nervous system.

Detailed explanation-3: -The nervous system uses tiny cells called neurons (NEW-ronz) to send messages back and forth from the brain, through the spinal cord, to the nerves throughout the body.

Detailed explanation-4: -Axon – The long, thin structure in which action potentials are generated; the transmitting part of the neuron. After initiation, action potentials travel down axons to cause release of neurotransmitter.