Science, asked by anie27, 1 year ago

explain the structure & function of neuron

Answers

Answered by Aishwaryashirat01
1
It have a star shape with a tail and it have a function of control and coordination.
It is a highly specialised connnective tissue which can be stimulated v.rapidly within the body..
Answered by TechyBhai
1
\huge Hello\huge friends,

<b>Neuronsare specialized cells of the nervous system that transmit signals throughout the body. You may already know that neurons can do many different things from sensing external and internal stimuli, to processing information and also directing muscle actions. But do you know how far a neuron can send a signal or how neurons actually work at the cellular level? In this lesson, we'll take a look at neurons and how they work.

The two types of neuron extensions

The most unique and important structures of a neuron are the long extensions that extend out from the cell body. There are two types of extensions: dendrites and axons. Dendrites are extensions of neurons that receive signals and conduct them toward the cell body. Axons are extensions of neurons that conduct signals away from the cell body to other cells. Both axons and dendrites can extend far away from the cell body, and some human axons can reach lengths of over 3 feet, but that's nothing compared to giraffes, which have axons as long as 15 feet!

Membrane Polarization

Okay, so neurons have dendrites and axons that can extend far from the cell body and relay signals to and from other cells, but how do they actually relay these signals? For this, let's take a closer look at a section of a neuron's dendrite.

When the dendrite is not transmitting a signal it is said to be in its resting state. In this state, the inside of the cell has a net negative charge, and the outside of the cell has a net positive charge. The membrane is said to be polarized because negative and positive charges exist on opposite sides. The polarized state of the membrane is actively maintained by the neuron through the use of sodium-potassium pumps. These sodium-potassium pumps pump three positively charged sodium ions out of the cell for every two positively charged potassium ions it pumps into the cell. Each cycle of the pump increases the polarization a little more. In addition, potassium ions leak back across the membrane and out of the cell by diffusion which, again, creates more negative charge inside the cell and more positive charge outside the cell.


The neuron is the basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells. Neurons are cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.

Neuron is also known as the nerve cell and is the basic building block of the nervous system. Neurons help in receiving, processing and transmitting information. 3 components of neuron are Cell body or soma, Dendrites an Axon. Cell body consists of the cytoplasm and the nucleus.

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