6. Write a description of a neuron at rest. What happens to a neuron that results in the action potential? Include the following terms: semi-permeable cell membrane; electrostatic forces; concentration gradient; ion channel; Na+; K+; sodium-potassium pump; EPSP; IPSP; threshold [3 points; 1 for including all the terms, 2 for describing accurately] Solution neuron:they are the masses of nerve cells that transmits information. neuron at rest:when a neuron is not responding to a signal it is at rest,when a neuron is in resting state the axonal membrane is comparitively more permeable to potassium K+ and almost imppermeable to sodium ions Na+.in the same way the membrane is impermeable to negatively charged proteins present in the axoplasm.the axoplasm inside the axon contains high concentrations of K+ and a high concentration of Na+ forming a concentration gradient. the electrostatic forces help them to ability to conduct...the ionic gradients across the resting membrane are maintained by active transport of ions by the sodium potassium pump.it transports 3Na+ outwards and2K+ in to the cell the outer surface of the axonal membrane possesses a positive charge it inner surface contain a negative charge and gets polarised.the electrical potential across the resting plasma membrane is called resting potential or polarization neuron that results in action potential :when a neuron is stimulus it is applied on the site of a polarized membrane.the membrane at that site becomes freely permeable to Na+.this leads to a rapid influx of Na+ followed by the reversal of the polarity at that site, outer surface of membrane becomes negatively charged and the inner side becomes positively charged . the polarity of the membrane at the site -a is called action potential.or depolarisation.or also termed as nerve impulse.the EPSP deplorise the membrane and move closer to the thersold for action potential.IPSP hypolarise the membrane and moves farther away to the potential.....

1. 6. Write a description of a neuron at rest. What happens to a neuron that results in the action
potential? Include the following terms: semi-permeable cell membrane; electrostatic forces;
concentration gradient; ion channel; Na+; K+; sodium-potassium pump; EPSP; IPSP; threshold
[3 points; 1 for including all the terms, 2 for describing accurately]
Solution
neuron:they are the masses of nerve cells that transmits information.
neuron at rest:when a neuron is not responding to a signal it is at rest,when a neuron is in resting
state the axonal membrane is comparitively more permeable to potassium K+ and almost
imppermeable to sodium ions Na+.in the same way the membrane is impermeable to negatively
charged proteins present in the axoplasm.the axoplasm inside the axon contains high
concentrations of K+ and a high concentration of Na+ forming a concentration gradient. the
electrostatic forces help them to ability to conduct...the ionic gradients across the resting
membrane are maintained by active transport of ions by the sodium potassium pump.it transports
3Na+ outwards and2K+ in to the cell the outer surface of the axonal membrane possesses a
positive charge it inner surface contain a negative charge and gets polarised.the electrical
potential across the resting plasma membrane is called resting potential or polarization
neuron that results in action potential :when a neuron is stimulus it is applied on the site of a
polarized membrane.the membrane at that site becomes freely permeable to Na+.this leads to a
rapid influx of Na+ followed by the reversal of the polarity at that site, outer surface of
membrane becomes negatively charged and the inner side becomes positively charged . the
polarity of the membrane at the site -a is called action potential.or depolarisation.or also termed
as nerve impulse.the EPSP deplorise the membrane and move closer to the thersold for action
potential.IPSP hypolarise the membrane and moves farther away to the potential....