GENERAL HISTOLOGY

NERVOUS

NEURONS TYPES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a neuron is at REST,
A
the inside of the neuron is negatively charged compared to the outside.
B
the inside of the neuron is positively charged compared to the outside.
C
there is no charge difference established
D
none of these is true
Explanation: 

Detailed explanation-1: -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. At rest, there are relatively more sodium ions outside the neuron and more potassium ions inside that neuron.

Detailed explanation-2: -A neuron at rest is negatively charged because the inside of a cell is approximately 70 millivolts more negative than the outside (−70 mV); this number varies by neuron type and by species.

Detailed explanation-3: -The resting potential of neurons is about-70 mV. At resting potential concentration of ions is kept constant through Na+/K+ pumps.

Detailed explanation-4: -Due to this the inside of the cell is comparatively negative to the outside. Whereas the positive charge gets accumulated outside the axonal membrane of the neuron in the resting phase.

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