PSYA01H3 Chapter Notes - Chapter 3.2: Acetylcholine, Myelin, Alprazolam
Document Summary
3. 2 how the nervous system works: cells and neurotransmitters. Dendrites receive this input: they are small branches radiating from the cell body that receive messages from other cells and transmit those messages toward the rest of the body. Impulses from other cells will travel across the neuron to the base of the cell body, which is the. The activity will travel from the axon hillock along the tail-like structure called the axon: transports information in the form of electrochemical reaction from the cell body to the end of the neuron. When the activity reaches the end of the axon, it will arrive at the axon-terminals: they are bulb-like extensions filled with vesicles (ie. little bags of molecules) Vesicles contain neurotransmitters: the chemicals that function as messengers allowing neurons to communicate with each other, the impulse traveling down the axon will stimulate the release of neurotransmitters; thus, allowing neural communication to take place.
