Biology

The spinal cord consists of neurons that provide information to the brain which helps the brain be aware of external stimulation and bodily functioning. It also transmits information from the brain to muscles that make movement and provides functioning for organs. The spinal cord also contains tiny interneurons that link sensory neurons to motor neurons.
The brain has many interneurons’ that constitute the center of the entire nervous system. The interneurons’s receive and transmit information through the spinal cord and also through other ways. The brain has many areas that are now known for specific functions.
The neurons of the peripheral nervous system are the rest of the chain that carries information to and from the brain. The neurons that relay information to the nervous system are called afferent neurons. The neurons that relay information from the central nervous system are called efferent neurons. Based on this the peripheral nervous system is divided into two systems, one the somatic nervous system the other is the autonomic nervous system.
In the somatic nervous system the afferent neurons relay signals to sensory receptors such as eyes, ears, taste, touch, and hear. The somatic nervous systems efferent neurons relay signals that produce gross motor skills to fine motor skills, such as riding a bike to operating your fingers.
In the autonomic nervous system both neurons work together to help operate the internal workings of the body like breathing, and your heart rate.

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