Neuron

What is active potential?

Ek neuron hota hai .jab neuron rest pe hota hai ya tum kehb sakte ho jav usme koi electrical signal nahi hota toh neuron ka andar ka ideal negative charge gets balanced from outside positive charge Na+(Na+ neuron ki semipermiable memberane ke bahar hota hai). and this potential is -70mv and jab Neuron ka andar ka charge negative se positive ho jata due to more Na+ ion at outside(paka nahi hai) tab neuron ka inside positive charge ho jata hai and ise active potential,spike,impulse bhi kehte hai.

Neurons send messages electrochemically. This means that chemicals cause an electrical signal. Chemicals in the body are "electrically-charged" -- when they have an electrical charge, they are called ions.

The important ions in the nervous system are sodium and potassium (both have 1 positive charge, +), calcium (has 2 positive charges, ++) and chloride (has a negative charge, -). There are also some negatively charged protein molecules.

When a neuron is not sending a signal, it is "at rest."

 inside of the neuron is negative relative to the outside

At rest, potassium ions (K⁺) can cross through the membrane easily. Also at rest, chloride ions (Cl^-)and sodium ions (Na⁺) have a more difficult time crossing. The negatively charged protein molecules (A^-) inside the neuron cannot cross the membrane.

Refer to pdf

Axom

" An axon (from Greek ἄξων áxōn, axis), also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons. "