The Nervous System Anatomy

Nervous Tissue
The nervous system is componed by two major nervous tissue made by cells: neurons and neuroglia.

• Neurons. Neurons are also known as the nerve celles that transmitts electrochemical signs to the body. This type of cell differenciates from others due to cellular processes that this develop. A neuron is componed by the cell body, dendrites and axons.    

1. Cell body: where all the organelles sucha as the nucleous, mitochondria, golgi apparatus, nucleolus, ryboseome, lysosome, endoplasmic reticulum, and others.
2. Dendrites: pick up stimuli from the enviorment, sensory receptor cells and it recieves the chemical messages from other neurons.
3. Axons: transmits and electro-chemical signal to other neurons.

• There are different classes of neurons, Afferent Neurons (sensory neurons), Efferent Neurons (motor neurons) and Interneurons 

1. Afferent Neurons, are the sensory ones, which transmits the sensory signals to the central nervous system from the receptors of the body.
2. Efferent Neurons, are the motor ones, this neurons transmits signals from the central nervous to the effectos in the body (e.j.muscles)
3. Interneurons: the kind of neurons integrates the information recived from the afferent neurons to direct the function of the body through efferent neurons.

• Neuroglia: also known as the glial cell and acts as the helper of the nervous system cells. The neuroglia are vital to maintain a functioning nervous system, beacuse of the protection it gives to the neurons of the entire body.