PSY 1 Lecture Notes - Lecture 4: Extracellular Fluid, Nucleolus, Resting Potential
Document Summary
Soma (the nerve center of the neuron) Dendrite (tree like structure that received signals from other cells and conduct electrical signals to other cells) Terminal button (neurons transfer to other cells) Myelin sheath (layers of fat that serve as a insulator, prevents the axon from being affected by other chemicals that might be in the fluid of the cell) Nodes of ranvier (gaps that allow the impulse to jump) Synaptic gap (the distance between the sending neuron and receiving neuron) In random motion in the intracellular and extracellular fluid. Ions tend to flow from areas of high concentration to low concentration concentration gradient . Sodium concentration is ten times greater on the outside than in the inside. Potassium concentration is ten times greater on the inside than in the outside. Pushing potassium out of the cell and sodium into the cell.
