Exam 21: Peripheral Nervous System

The phrenic nerve exits from the brachial plexus.

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

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.

Which of the following cranial nerves is not associated with eye movement?

Any disease or injury that damages the spinal cord between the first and fifth cervical segments also paralyzes the phrenic nerve and therefore the diaphragm.

Amines are the neurotransmitters in a somatic motor pathway.

Spinal nerves are _____ fibers.

Explain the difference between a spinal reflex and a cranial reflex. Explain the difference in effector organs between somatic reflexes and visceral reflexes.

Trigeminal neuralgia, or tic douloureux, is characterized by stabbing pain radiating from the eyes.

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

The femoral nerve, a major nerve in the lower extremity, exits from the lumbar plexus.

The glossopharyngeal nerve supplies fibers to the carotid sinus, which has a role in the control of blood pressure.

There is one more thoracic spinal nerve than there are thoracic vertebrae.

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

Each spinal nerve branches into three rami: a ventral branch, a dorsal branch, and an autonomic or visceral branch.

Which is not true of the dorsal nerve root?

All of the following cranial nerves are involved in proprioception except the:

The vagus nerve originates in the pons.

Which of the following is not a branch of the trigeminal nerve?

Myotome is a term referring to a skeletal muscle group innervated by motor neuron axons from a given spinal nerve.