The brain is the center engine of the body. The concentrate most of neuron cells that are capable of carrying information from any part of the body to the brain or carry an order from it anywhere.

From the brain neurons through all actions are coordinated and processed all the information from abroad to act according to circumstances.

Neurons

Neurons are cells in which one can distinguish the following parts:

·  Corps cell: is in the kernel. Es una masa de citoplasma. It is a mass of cytoplasm.

·  Axón: it is an elongated lump that is responsible for transmitting signals from other neurons.

·  Dendritas: are responsible for receiving information in the form of nerve impulses from other neurons.

Communication between neurons

Neurons are not united, but there is a space between them. The information is sent from the axon of one neuron to the dendrite of another. The connection between neurons is called synapses. These can be electric or chemical weapons.

The neuron that emits the signal is the name presináptica and receiving it, the postsynaptic. The latter, depending on the type of signal may be inhibited (eliminates another pulse) or excited (produces a new momentum).

Neurotransmitters

Ramón y Cajal was on hand to reveal that the brain structure was composed of millions of neurons separated. The transmission of information between neurons and some other is a chemical process.

The neurotransmitter substances are responsible for carrying information from one neuron to another in the case of chemical synapses. Salen's axon and adhere to the dendrites of another neuron changes in the same.

The reaction produced in recipients can be of excitation or inhibition, depends on the class of neurotransmitters. Currently not yet know the functions of all of them.

Types of neurotransmitters

·  Acetilcolina: its function is unknown, but it is known that runs through all the connections to the muscles volunteers.

·  Glutamic acid: it is one of the main exciters of neurons.

·  Dopamine: I spoke at the orders are sent to the musculoskeletal system. The deficiency of this substance can cause diseases such as Parkinson's.

·  Endorfina: inhibitors are feeling the pain.

·  GABA: it acts as an inhibitor.

·  Glycine: it acts as an inhibitor.

·  Histamine: serving as exciter neurons in the nervous system.

·  Noradrenalina: serving as the agency must respond quickly and unexpectedly before an impetus for example increased heart rate.

·  Serotonin: it is an inhibitor. You relate to the moods. It is related to the onset of schizophrenia.

·  Substance P: active in the transmission of the pain signal.