Exam 34: Nervous System

The olfactory and optic are the only cranial nerves that are not paired because they are centrally located in the intravertebral foramina.

Which nerve supplies the muscle that moves the eye downward and laterally?

Sensation to the maxillary labial gingiva is supplied by the nasopalatine nerve because this nerve branches off the infraorbital as it travels to supply the maxillary anterior teeth.

The spinal nerve divides into a dorsal and a ventral primary ramus. This division occurs in the grey matter.

Which nerve goes up into the orbit and exits to supply the skin of the cheek and temple?

The central nervous system is made up of the brain and the spinal cord.

The parasympathetic nervous system is called the craniosacral outflow because fibers from this system come off the brain and spinal cord at the sacral level.

Which part of the spinal cord is arranged in the shape of a butterfly?

During times of stress incoming light is blocked to protect the eyes. This is accomplished by dilation of the pupils, a function of the sympathetic nervous system.

The statoacoustic nerve is responsible for hearing. Closely related, the abducens nerve is responsible for equilibrium.

Each of the following cranial nerves has sensory function EXCEPT one. Which is the EXCEPTION?

The sympathetic nervous system is also known as the craniofacial outflow. A term commonly used to describe the sympathetic nervous system is the "fight-or-flight-mechanism."

The 12 pairs of thoracic nerves are distributed in the thorax and lumbar regions because all spinal nerves are distributed by region from the neck to the toes.

The autonomic nervous system is composed of preganglionic and postganglionic neurons. These neurons diverge (separate) in a ganglion within the nervous system.

Each of the following is a parasympathetic function EXCEPT one. Which is the EXCEPTION?

The ophthalmic division is a branch of which nerve?

When the tip of the tongue feels pain from hot soup the lingual division of the facial nerve is innervated because the lingual nerve supplies sensation to the anterior two-thirds of the tongue.

Eyesight is supplied by cranial nerves II and III.

The maxillary division of the trigeminal nerve follows the same pathway as the maxillary artery. The maxillary nerves and arteries generally have the same names.

Sensation to the skin of the lower lip and chin is supplied by which nerve?