# data[].attributes.body
Neurons are the most important part of a brain, because it receives all the information that is happening in our body, and also process the instructions to tell the brain how to act.

Knowing the Neuron how it function, its classification, and how it works, its important, because is the motor of our body, and how it makes that we respond to a stimulus and how the information gets to the brain.

Synapses is when the information is transmitted by electrical impulses or chemical impulses and here is when the information gets to the neuron.

# data[].attributes.body
Neurons are classified functionally according to the direction in which the signal travels, in relation to the CNS. This classification also results in three different types of neurons: sensory neurons, motor neurons, and interneurons.

Sensory neurons or afferent neurons transmit information from sensory receptors in the skin, or the internal organs toward the CNS for processing. Almost all sensory neurons are unipolar.

Motor or efferent neurons transmit information away from the CNS toward some type of effector. Motor neurons are typically multipolar.

Interneurons are located between motor and sensory pathways and are highly involved in signal integration. The vast majority of interneurons are confined within the CNS.

# data[].attributes.body
Is based upon the number of processes that extend out from the cell body. Three major groups arise from this classification: multipolar, bipolar, and unipolar neurons.

Multipolar neurons are defined as having three or more processes that extend out from the cell body. They comprise more than 99% of the neurons in humans and are the major neuron type found in the CNS and the efferent division of the PNS.

Bipolar neurons have only two processes that extend in opposite directions from the cell body. One process is called a dendrite, and another process is called the axon. Although rare, these are found in the retina of the eye and the olfactory system.

Unipolar neurons have a single, short process that extends from the cell body and then branches into two more processes that extend in opposite directions. The process that extends peripherally is known as the peripheral process and is associated with sensory reception. The process that extends toward the CNS is the central process. Unipolar neurons are found primarily in the afferent division of the PNS.

# data[].attributes.body
Are often referred to as the body’s chemical messengers. They are the molecules used by the nervous system to transmit messages between neurons, or neurons to muscles.

Communication between two neurons happens in the synaptic cleft (the small gap between the synapses of neurons). Here, electrical signals that have traveled along the axon are briefly converted into chemical ones through the release of neurotransmitters, causing a specific response in the receiving neuron.

A neurotransmitter influences a neuron in one of three ways: excitatory, inhibitory, or modulatory.

# data[].attributes.body
Neurons send signals using action potentials. An action potential is a shift in the neuron’s electric potential caused by the flow of ions in and out of the neural membrane.
Action potentials can trigger both chemical and electrical synapses.

Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.

Chemical synapses
Is when action potentials affect other neurons via a gap between neurons called a synapse.

Electrical synapses
Occur when two neurons are connected via a gap junction. This gap is much smaller than a synapse and includes ion channels that facilitate the direct transmission of a positive electrical signal. As a result, electrical synapses are much faster than chemical synapses. However, the signal diminishes from one neuron to the next, making them less effective at transmitting.

# data[].attributes.body
Cell body or soma: is the portion of the cell that surrounds the nucleus and plays a major role in synthesizing proteins.

Dendrites: are short, branched processes that extend from the cell body. Dendrites function to receive information, and do so through numerous receptors located in their membranes that bind to chemicals, called neurotransmitters.

Axon: is a large process that extends from the cell body at a point of origin-called the axon hillock-and functions to send information. In contrast to the shorter dendrites, the axon can extend for more than a meter.
Axon terminals: are designed to convert the electrical signal into a chemical signal in a process called synaptic transmission.

# data[].attributes.body
Is a nerve cell that receives and sends electrical signals over long distances within the body. A neuron receives electrical input signals from sensory cells (called sensory neurons) and from other neurons. The neuron sends electrical output signals to muscle neurons (called motoneurons or motor neurons) and to other neurons. A neuron that simply signals another neuron is called an interneuron.