PSYC 280 Study Guide - Midterm Guide: Blood Vessel, Fail-Safe, Reuptake

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 280
• Professor: Neil Watson

Document Summary

Know the two main amino acids - gaba, glutemate gaba: inhibitory, glutemate: excitatory. Know their category, what they do, where they are found. Inside the cell, there is a lot of negatively charged protein ions, too big to cross the membrane. Potassium ions inside the cell, a few outside. Outside there are a bunch of calcium ions and chloride ions. Only let potassium inside the cell or out. It"s moving down its concentration gradient (moving from high to low) Because the inside is so negative, the potassium ions outside are attracted. Equal number of k ions moving in and out at the same time. Forces in 2 potassium, forces out 3 sodium ions. After an ap when the sodium channels open and flood in, they have no way of getting back out. Ap is propagated at the nodes of ranvier. Becomes more positive on the inside of the cell, the charge moves down the axon.