PSYC 3300- Final Exam Guide - Comprehensive Notes for the exam ( 46 pages long!)
Document Summary
Ion channels control the flow of molecules into and out of the cell. Ion channels: remain open or can be opened allowing for passive transport of molecules into and out of the cell. Ion pumps: utilize energy (atp) to actively move molecules into and out of the cell. Ions: molecules that have a positive or negative charge because they have lost or gained an electron, cations, na, k, ca, anions, cl- Ions can cross through only when their channels are open: voltage gated ion channels, status based on changes in the membrane potential, these channels regulate the flow of k+ and na+ into and out of the cell. If the membrane and closed ion channels prevent ions from entering and exiting the cell : how di ions move from one area to the next. Ion pumps: utilize energy (atp) to actively move molecules into and out of the cell against their gradients, preserves cells resting state, protein (ion) channels.
