PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
positive, the surrounding cytoplasm
|
|
|
negative, the surrounding cytoplasm
|
|
|
positive, the dendrite
|
|
|
negative, the dendrite
|
Detailed explanation-1: -A neuron is at rest when it is not sending an an electrical signal. During this time, the inside of the neuron is negative relative to the outside.
Detailed explanation-2: -The resting potential is the resting state of the neuron, during which time the neuron has an overall negative charge. The resting potential in neurons is approximately-70 milliVolts (mV). The negative sign indicates the negative charge inside the cell relative to the outside.
Detailed explanation-3: -4 The Membrane at Rest The inside of the neuron is more negatively charged than the outside. Figure 4.1. For a typical neuron at rest, sodium, chloride, and calcium are concentrated outside the cell, whereas potassium and other anions are concentrated inside.