KINE 3020 Chapter Notes -Resting Potential, Threshold Voltage, Excitatory Postsynaptic Potential
4 Dec 2013
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Topic 2: information transmission in the nervous system: the inside of the cell has a resting potential of ____ mv with respect to the outside. The electrical potential is caused by an unequal concentration of chemical ions on the inside versus the outside of the cell. Potassium (k+) ions are high on the inside of the cell and sodium (na+) ions are high on the outside of the cell. An electrical pump within the cell membrane keeps the ions in their appropriate concentrations: when neuron is at rest k+ channels are _____ When the neuron is at rest the potassium (k+) channels are open and keep the neuron at this negative potential: dramatic jumps in voltage across the cell membrane are indicative of ______ When a neuron is excited one sees a series of dramatic jumps in voltage across the cell membrane.
