PSYC 2410 Lecture Notes - Lecture 5: Catecholamine, Neuromuscular Junction, Astrocyte

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2410
• Professor: Dr.Limebeer

Document Summary

Resting membrane potential recording the membrane potential: difference in electrical charge between inside and outside of cell inside of neuron is negative resting membrane potential us about -70mv. Even distribution: (charged paticles) random motion: particles move down the concentration gradient electrostatic pressure: like repels like, opposites attract. Uneven distribution: selective permeability to certain ions and sodium-potassium pumps. Sodium (na+), chloride (cl-), potassium (k+) negatively charged proteins (a-): synthesized within neuron, found primarily in neuron. The neuron at rest ions move in and out through ion-specific channels. K+ and cl- pass readily and little movement of na+ Na+ is driven in by both electrostatic forces and its concentration gradient. K+ is driven in by electrostatic forces and out by its concentration gradient. Sodium-potassium pump (uses atp) force that exchanges 3 na+ inside for 2 k+ outside. The neural membrane: the passive and active factors that influence the distribution of. Na+, k+ and cl- ions across the neural membrane.