The Biological Aspects of Psychology

Topics: Neuron, Nervous system, Action potential Pages: 3 (938 words) Published: January 3, 2013
Brain cells, hormones, and genes (etc) relate to everything one thinks, feels, does. Biological Psychology: The study of the cells and organs of the body + the phys/chem changes in behavior + mental processes. •Behaviours and mental processes influenced by biology, biological processes by environment as well Nervous system : Complex combination of cells that mainly function to let an organism gain information about what is going on inside/outside body and how to respond to it. Three functions of the nervous system:

receive information; input
integrate information with past experiences; processing • Guide actions; output.
Brain can adjust the impact of incoming information (can’t tickle oneself) Brain cells communicate by chemicals signals released by other cells. Made of separate cells
Neurons: cells that are specialized to quickly respond to signals and to quickly send signals of their own •have outer membrane
cell body -> contains nucleus
mitochondria -> turn oxygen and glucose into energy
Glial cells: help neurons communicate by directing their growth, stable chemical environment providing energy, help restore damage + hold neurons together. •Synthesize similar proteins as bacteria

Neuron communicate efficiently because ->
structure –long thin fibers that extend outer ward of cell body; intermixing allows neurons to be close to many other neurons. 2 types of fibers –
Axons: fibers that carry signals away from the cell body, out to where communicate occur with other neurons. Dendrites: fibers that receive signals from the axons of other neurons and carry them down the cell body. Synapse: gap between neurons where they communicate

Nerve cell membrane is semipermeable (allows some things to pass) •Inside of membrane is normally slightly negative as positive charged molecules are often pumped out through the membrane [Polarized state of cell membrane] Negative-positive attraction leads to electrochemical potential which drives...
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