APSY-UE 2 Lecture Notes - Lecture 3: Brainstem, Amygdala, Neuroglia
8 Oct 2018
School
Department
Course
Professor
Document Summary
Glia-cells found throughout the nervous system that provide nourishment and oxygen to neurons, much smaller than neurons, about 10 glia per neuron. Neurons-basic building block of the nervous system, handles most information processing. Contains body called soma, branching fibers called dendrites that are extensions that receive messages and conduct impulses towards the cell body. Cells link the axon fibers to pass the messages from soma to other neurons as well as to muscles and glands throughout the body (very long, can be several feet) The two main categories of cells in the nervous systems are glia and neurons. Neurons-individual cells in the nervous system that receive, integrate, and transmit information. Positively charged on the outside and negatively charged on the inside is the resting potential. Axon surface is very selective about what lets in. Acetylcholine (ach)-plays a role in learning and memory, one reason where one individual suffers from alzheimer"s is because their brain is not producing enough.
