The neuron is the basic biological element (cell) of the human brain and the nervous system. Neurons or Nerve cells transmit information via electrical impulses to one another, thus creating a flow of information inside a biological system. The structure of a neuron is composed of three key parts — axon, dendrite, and soma.

Frequently Asked Questionsedit

How are neurons connected to one another?edit

Each neuron is connected to each other at a junction called synapses. A synapse connects the two terminals of neurons — dendrite and axon, enabling them to communicate. Synapses are not a physical connection (in general) but small gaps where chemical neurotransmitters or ions diffuse between two neurons.

Why neurons are connected with synapses and not directly?edit

The neurons are connected with gaps/synapses as in most cases, such chemical junction provides an efficient way to communicate information across the neurons. By inhibiting and exciting certain receptors, this behaviour is achieved. Also, such junctions provide a way of flexibility for the nervous system to adapt to the changes. For example, when a few neurons undergo apoptosis, it need not occur at a large scale.