What is the peripheral nervous system made of?

What makes up the peripheral nervous system?

Overview. The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.

What are the 3 parts of the peripheral nervous system?

The PNS. The PNS comprises cranial nerves 3–12, the spinal roots, sensory and autonomic ganglia, and the somatic nerves.

What are the major organs of the peripheral nervous system?

The organs of the peripheral nervous system are the nerves and ganglia. Nerves are bundles of nerve fibers, much like muscles are bundles of muscle fibers. Cranial nerves and spinal nerves extend from the CNS to peripheral organs such as muscles and glands.

What are two types of peripheral nerves?

The peripheral nervous system is divided into two main parts:

  • Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands.
  • Somatic nervous system (SNS): Controls muscle movement and relays information from ears, eyes and skin to the central nervous system.

What is an example of the peripheral nervous system?

The peripheral nervous system includes the cranial nerves, the spinal nerves, the sympathetic nervous system, and the parasympathetic nervous system.

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What are the types of peripheral nervous system?

There are three types of peripheral nerves: motor, sensory and autonomic. Some neuropathies affect all three types of nerves, while others involve only one or two. 3 Types of Peripheral Nerves: Motor.

Is the sciatic nerve part of the peripheral nervous system?

The longest human nerve is the sciatic nerve. It runs from the spinal cord in the lower back down the left leg all the way to the toes of the left foot. Like the nervous system as a whole, the peripheral nervous system also has two divisions: the sensory division and the motor division.

Which organ is part of our nervous system?

The brain and the spinal cord are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.