Free and printable nervous system diagrams have been collected for you in high quality and definition. Prepared for any educational or research purpose, these diagrams contain the detailed anatomy of how the human nervous system works. The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord form the control center known as the central nervous system (CNS), where information is evaluated and decisions made. You can see the first diagram in the following image.
The majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. The neurons conduct impulses and the neuroglia support and protect the neurons. A neuron consists of a cell body called cyton, and two types of processes—dendrite and axon. We can see in the nervous system diagram, that the nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body.
Neurons signal to other cells through fibers called axons. Chemicals called neurotransmitters are released at gaps called synapses. These communications take only a fraction of a millisecond. Sensory neurons respond to stimuli such as light and sound. Motor neurons carry activation signals to muscles and glands. Other diagrams can be seen in the following images.
The nervous system includes the central and peripheral nervous systems. The sense organs, including the eye, contain receptors that are sensitive to stimuli and respond with reflex actions. Therefore, it is important to know about the nervous system entirely. Print these diagrams by clicking on the image to enlarge and save it!