PSYC 3670 Lecture Notes - Lecture 3: Axon Hillock, Membrane Potential, Resting Potential

50 views5 pages

Document Summary

Neurophysiology: study of the life processes of neurons. Polarized: di erence in electrical charge (every cell is more negative on the inside & more positive outside) Anions: majority of the ions in the cell (negatively charged, ex: large proteins that don"t cross the membrane) Intracellular uid: cytoplasm - ions are dissolved in here. Extracellular uid: uid in the spaces between cells. Micro-electrode: small electrode used to record electrical potentials inside living cells. Resting potential: di erence in electrical potential across the membrane of a nerve cell at rest (-50 to -80 thousands of a volt/millivolts (mv) (typically -70mv) Ion channel(protein): pore in cell membrane that allows certain ions through the membrane. Selective permeability: property of membrane that allows some substances to pass through but not others (channels open with speci c voltage or key ex: neurotransmitter) Potassium ion (k+): potassium atom with positive charge (semipermeable ion channels selectively allow k+ to cross the membrane, having more inside cell than outside)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents