Exam 21: Peripheral Nervous System

Match each cranial nerve with its function or description. -Supplies muscles of the tongue; name means "under the tongue"

Branches of the dorsal ramus innervate the skin and muscles of the posterior surface of the head, neck, and trunk.

The peripheral nervous system consists of 43 pairs of nerves and their branches.

The spinal nerves are connected to the spinal cord and consist of _____ pairs.

The spinal ganglion can be found on the _____ of the spinal nerve.

The first four lumbar nerves contribute to the lumbar plexus.

The last spinal nerve is Cx 1 (from the coccyx), which joins with sacral spinal nerves to form the coccygeal plexus.

A reflex always includes a muscle contraction or a gland secretion.

Most of the optic nerve fibers terminate in the cerebellum.

The cranial nerve that arises from the spinal cord is the:

The sacral plexus is found deep within the shoulder.

The cauda equina:

Match each term with its description or definition. -Group of skeletal muscles that receive axons from one spinal nerve

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

The plantar reflex consists of a curling under of all the toes, plus a slight turning in and flexion of the anterior part of the foot.

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

The somatic motor pathway has two neurons between the CNS and the effector organs, just as the autonomic system does.

It would be normal to find a functioning Babinski reflex in an infant as young as 4 months old.

Efferent nerves or fibers are found only in the _____ system.

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