Peripheral Nervous System

The central nervous system constantly interacts with the peripheral nervous system via 12 pairs of cranial nerves that connect the brain with the head and neck and 31 pairs of spinal nerves that connect the central nervous system with the rest of the body. Nerves are the bundled axons and dendrites of neurons found outside the central nervous system. Each spinal nerve has a dorsal root and a ventral root. The dorsal roots carry signals into the central nervous system from various sensory receptors. These neurons are specialized to detect a stimulus such as light, pressure, or heat. The ventral roots contain the axons of motor neurons, which carry information from the central nervous system to muscles and glands. The spinal cord has interneurons, which relay information between other neurons.

figure 49-8

The spinal cord, shown in cross section, carries information toward and away from the brain. Sensory information from the body enters the spinal cord through the dorsal roots. Instructions to the body's muscles and many glands come from motor neurons that exit the spinal cord through the ventral roots.

figure 49-8

The spinal cord, shown in cross section, carries information toward and away from the brain. Sensory information from the body enters the spinal cord through the dorsal roots. Instructions to the body's muscles and many glands come from motor neurons that exit the spinal cord through the ventral roots.

Peripheral Neuropathy Natural Treatment Options

Peripheral Neuropathy Natural Treatment Options

This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.

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