Textbook Notes (369,099)
Canada (162,378)
Psychology (2,981)
PSY100H1 (1,831)
Chapter 3

Summary of Chapter 3

14 Pages

Course Code
Michael Inzlicht

This preview shows pages 1,2,3. Sign up to view the full 14 pages of the document.
Chapter Three The biological bases of behavior Communication in the nervous system Key parts of the neuron - Cells in the nervous system fall into two categories: 1) Neurons - Neurons: individual cells in the nervous system that receive, integrate, and transmit information. - Soma (=cell 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: a long, think 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. - Terminal buttons: small knobs that secrete chemicals called neurotransmitters. - Synapse: junction where information is transmitted from one www.notesolution.com neuron to another. 2) Glia - Glia: cells found throughout the nervous system that provide various types of support for neurons. - Supply nourishment to neurons, help remove neurons waste products, and provide insulation around many axons. The Neural impulse - The resting potential: when a neuron is stable, negative charge when the cell is inactive. - Action potential: a very brief shift in a neuron electrical charge that travels along an axon. - Absolute refractory period: the minimum length of time after an action potential during which another action potential cannot begin. - Either neuron fires or it doesnt, and its action potential are all the same size. Weaker stimuli do not produce smaller AP. The synapse where neurons meet www.notesolution.com
More Less
Unlock Document

Only pages 1,2,3 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

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.