Peripheral Nervous System

PERIPHERAL NERVOUS SYSTEM – structure of a nerve

1)What layer covers a neuron (not referring to myelin)?

2)What layer covers a fascicle (bundle of neurons)?

3)What layer covers a bundle of fascicles?

DAMAGE TO THE NERVOUS SYSTEM

What can a spinal cord injury in the cervical region mean?

If a person has a spinal cord injury in their thoracic region, what could they have?

What is the nerve that can be anesthetized during childbirth as an alternative to an epidural?

What type of nerve block is this called?

What nerve allows the diaphragm to contract? If it gets severed, the person can no longer breathe without assistance.

What is the major group of nerves that supply the upper limbs?

How can someone cause damage to this major group of nerves?

What is the main nerve to the muscles of the anterior forearm and palm?

What doesdamage to this nerve result in?

What is the main nerve to the anterior thigh?

Where does the SACRAL PLEXUS exit the spinal cord?

What is Sciatica?

What muscle can cause Sciatica and how does it cause it?

What is the other cause for Sciatica?

What does the sciatic nerve branch out into?

Where do they supply?

What nerve is damaged that produces foot drop?

What is the symptom of this injury?

Median nerve injury is called what?

Ulnar nerve injury is called what?

Radial nerve injury is called what?

AUTONOMIC NERVOUS SYSTEM

Functions

Do we have voluntary control over autonomic nerves?

What is the ANS also called and why?

Types of neurons in the ANS and how it differs from the rest of the peripheral nervous system

What is the structure where the two ANS nerves come together?

What is the proximal ANS neuron called?

What is the distal ANS neuron called?

Where are the cell bodies of the proximal neuron located?

Characteristics of the ANS motor unit:

How many motor neurons?

Are the axons myelinated or not?

Is conduction slow or fast?

Are the axons thick or thin?

SYMPATHETIC DIVISION does what to the following?

Heart rate

Metabolic activity, blood glucose levels

Peristalsis

Bronchioles

Blood flow to the skin

Sweat

How does the parasympathetic division differ in function from the sympathetic division?

Are the axons of the pre-ganglionic neurons of the sympathetic division short or long?

Are the axons of the post-ganglionic neurons of the sympathetic division short or long?

Are the ganglia of the sympathetic division closer to the organs or closer to the vertebral column?

Are the postganglionic fibers therefore short or long?

Are the axons of the pre-ganglionic neurons of the parasympathetic division short or long?

Are the axons of the post-ganglionic neurons of the parasympathetic division short or long?

Are the ganglia of the parasympathetic division closer to the organs or closer to the vertebral column?