NEET PG DENTAL EXAM

HISTOLOGY

NERVOUS TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the number of millivolts (mV) that a neuron is at during the Resting Potential phase
A
+30 mV
B
-55 mV
C
-70 mV
D
-75 mV
Explanation: 

Detailed explanation-1: -Finally, when all these forces balance out, and the difference in the voltage between the inside and outside of the neuron is measured, you have the resting potential. The resting membrane potential of a neuron is about-70 mV (mV=millivolt)-this means that the inside of the neuron is 70 mV less than the outside.

Detailed explanation-2: -The relative excess of positive charges outside and negative charges inside the membrane of a nerve cell at rest is maintained because the lipid bilayer acts as a barrier to the diffusion of ions, and give rise to an electrical potential difference, which ranges from about 60 to 70 mV.

Detailed explanation-3: -The resting potential of neurons is about-70 mV.

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