Textbook Notes (368,774)
Canada (162,158)
Psychology (1,899)
PSY100Y5 (809)
Dax Urbszat (681)
Chapter 3

textbook notes Chapter3

9 Pages
Unlock Document

Dax Urbszat

Oct62003 CHANAPS Notes From Reading C HAPTER3: THE B IOLOGICALBASIS OFB EHAVIOR Chapter 3 (The biological Bases of Behavior) Communication In The Nervous System Nervous Tissue: The Basic Hardware Glia- cells found throughout the nervous system that provide structural support, nourishment, and insulation for neurons. Neurons- individual cells in the nervous system that receive, integrate, and transmit information Somacell body- contains the cell nucleus and much of the chemical machinery common to most cells Dendrites- Parts of a neuron that are specialized to receive information. Axon- Long, thin fiber that transmits signals away from the soma to other neurons or to muscles or glands. Myelin sheath- insulating material, derived from glial cells, that encases some axons. (speeds up the transmission of signals that move along axons) Synapse- junction where information is transmitted from one neuron to another The Neuron at Rest: A Tiny Battery - Neural impulse is a complex electrochemical reaction. - Both inside and outside the neuron are fluids containing electrically charged atoms and molecules called ions. - Neuron is a tiny battery, a store of potential energy The Action Potential - if voltage of neuron remains constant, the cell is quiet and no messages are being sent - Action potential- very brief shift in a neurons electrical charge that travels along an axon. Absolute refractory period- minimum length of time after an action potential during which another action potential cannot begin. The All or None Law - weaker stimuli do not produce smaller action potentials Sending Signals: Chemicals as Couriers 19 www.notesolution.com
More Less

Related notes for PSY100Y5

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.