BIOL 1030 Chapter Notes - Chapter 48: Inhibitory Postsynaptic Potential, Central Nervous System, Axon Hillock

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Scott Kevin

Document Summary

Concept 48. 1 nervous systems consist of circuits of neurons and supporting cells. In simple cephalized animals such as the planarian, a small brain and longitudinal nerve cords form a simple central nervous system (cns). Nervous systems consist of circuits of neurons and supporting cells. In multiple sclerosis, myelin sheaths gradually deteriorate, resulting in a progressive loss of body function due to the disruption of nerve signal transmission. Concept 48. 2 ion pumps and ion channels maintain the resting potential of a neuron. Every cell has a voltage, or membrane potential, across its plasma membrane: all cells have an electrical potential difference (voltage) across their plasma membrane), this voltage is called the membrane potential. In neurons, the membrane potential is typically between ?60 and ?80 mv when the cell is not transmitting signals: the membrane potential of a neuron that is not transmitting signals is called the resting potential.