Textbook Notes (368,318)
Canada (161,809)
Psychology (1,957)
PS268 (56)
Chapter 4

Chapter 4.docx

5 Pages
92 Views
Unlock Document

Department
Psychology
Course
PS268
Professor
Bruce Mc Kay
Semester
Fall

Description
Chapter 4 The nervous system Components of the nervous systemGlia 1050 times more glia cells than neurons allow for communication with other cells oAble to produce a bloodbrain barrier this is a semiperiable membrane that protects the brain from potentially dangerious toxic chemicals A psychoactive drug must be able to pass through the bloodbrain barrier Only small lipophilic molecules can pass through the membrane Neurons responsible for analyzing and transmitting information oAll have 4 defined regions 1Cell body2Dendrites 3An axon4Presynaptic terminalsoNeuron send signals down the axon to synaptic terminals Neurotransmission Action potential Begins a chain of events that allows communication through the release of neurotransmitters Action potentials occur as a result from the ion channels opening Changes cause the cell to move away from its resting potential at 70mV to a more positive voltage Cell membrane has an uneven distribution of ions between intracellular and extracellular oIntracellularK oExtracellularNa and Cl refer to pg 67 68 for more info picturesNervous system
More Less

Related notes for PS268

Log In


OR

Join OneClass

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

Sign up

Join to view


OR

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.


Submit