Exam 21: Peripheral Nervous System

Explain the difference between the Babinski reflex and the plantar reflex. What does a positive Babinski reflex in an adult indicate?

The vagus nerve originates in the pons.

Each optic nerve contains fibers from both retinas.

There are 62 spinal nerves.

The sacral plexus is found deep within the shoulder.

If you have never had chickenpox, it is unlikely that you will develop shingles.

The cochlear nerve is composed of axons that originate in the organ of Corti.

Outline the neural pathway involved in the patellar (knee jerk) reflex.

The plantar reflex and Babinski reflex are brought about by the same stimulus.

Match each cranial nerve with its function or description. -Connects to various external muscles of the eye

Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate.

The brachial plexus is the only plexus that contains a thoracic spinal nerve.

Which is the only plexus that contains fibers from the thoracic region of the spinal cord?

Match each term with its description or definition. -Group or braid of nerves formed from spinal nerves C5 to T1

Each spinal nerve attaches to the spinal cord by means of two short roots-a ventral root and a dorsal root.

What would the result be if the phrenic nerve received an impulse from the cervical plexus?

List the names, numbers, and functional classifications of the cranial nerves.

The cauda equine:

The Babinski reflex is evoked via stimulation of the outer sole of the foot and will cause a normal infant to extend the great toe.

Match each cranial nerve with its function or description. -Sends fibers to the carotid sinus, which helps regulate blood pressure