BSCI 207 Lecture Notes - Lecture 37: Membrane Potential, Resting Potential, Action Potential

• School: University of Maryland
• Department: Biological Sciences Program
• Course: BSCI 207
• Professor: Leo Shapiro

Document Summary

Bsci207 - lecture 37 - neurons (mathbench and textbook) It would take a long time without neurons (if you touch something hot, you don"t get permanent damage because signal is sent to spinal cord/brain quick enough so that you remove your hand) Time for signaling molecules to diffuse 1 meter could take as long as 16 years t=x2/2 d. Time for signaling molecule to circulate through circulatory system (too much time) A neuron is a cell with axon for rapid, long distance communication. Action potential (electrical signals being passed over long distances) move down axons very quickly. Touch hot stove sends signal to spinal cord very fast. A neuron is sending and receiving signals. Dendrites collect electrical signals from other neurons. Cell body integrates incoming signals and generates outgoing signal to axon. Axon passes electrical signals to dendrites of another cell. Signals pass one way along a particular neuron.