Exam 15: Peripheral Nervous System

The nerves from the cervical plexus innervate the lower part of the shoulder and the entire arm.

The nerve commonly called the vagus nerve is the _____ cranial.

A mixed nerve is one that:

The trochlear nerve stimulates movement of the eye.

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

Approximately 3% of the population will suffer from shingles at some time in their lives.

Match each term with its description or definition. -nerve root that carries motor nerves away from the spinal cord

There are 62 spinal nerves.

Match each cranial nerve with its function or description. -abducts the eye

Which of the following is not associated with the oculomotor nerve?

In a healthy adult,a well-placed tap on the knee will result in a:

Somatic reflexes are contractions of smooth muscles.

Explain how the nerve plexuses make the nervous system more efficient.

Match each cranial nerve with its function or description. -branches into three nerves: the ophthalmic,maxillary,and mandibular nerves

The oculomotor nerve contains fibers from the autonomic nervous system.

Efferent neurons carry information away from the central nervous system; afferent neurons carry information towards the central nervous system.

Describe the basic principles of somatic motor pathways.

The olfactory nerve,the optic nerve,and the oculomotor nerve are the only cranial nerves that do not come from the brainstem.

Two cranial nerves,the hypoglossal and the vagus,receive branches from the cervical plexus.

The lumbar plexus gives rise to the _____ nerve.