Deck 34: Nervous System

Question 1

There are 31 pairs of spinal nerves. Twelve are in the thorax or chest region and eight are in the cervical or neck region.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Answer 1

A
Additionally, five are in the lumbar or lower back region; five are in the sacral or hip region; and one is in the coccygeal or tailbone region.

Question 2

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.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Answer 2

D
The 12 thoracic nerves are distributed only to the thoracic or chest area. Similarly, the five lumbar nerves are distributed to the lower back region. Note that distribution of spinal nerves is to their appropriate region.

Question 3

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

A) Oculomotor
B) Trigeminal
C) Optic
D) Trochlear

Answer 3

D
Although the optic and oculomotor involve other aspects of the eye and sight, the trochlear nerve is responsible for downward and lateral movement of the eye. The innervated muscle is the superior oblique.

Question 4

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."

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 5

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

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 6

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

A) Slows heart rate
B) Decreases salivary gland secretion
C) Increases blood supply to digestive system
D) Decreases respiratory rate

Question 7

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

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 8

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

A) Gray matter
B) White matter
C) Myelinated axons
D) Dorsal root ganglion

Question 9

The mental nerve supplies sensation to the floor of the mouth, the lingual mandibular gingivae, and the anterior two-thirds of the tongue. The mental nerve is joined by the chorda tympani, a branch of the facial nerve, to supply the submandibular and sublingual salivary glands.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 10

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.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 11

The ophthalmic division is a branch of which nerve?

A) Optic
B) Oculomotor
C) Trigeminal
D) Facial
E) None of the above

Question 12

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

A) Olfactory
B) Optic
C) Statoacoustic
D) Hypoglossal

Question 13

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.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 14

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

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 15

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

A) Mylohyoid
B) Mental
C) Lingual
D) Auriculotemporal

Question 16

The facial nerve innervates each of the following structures EXCEPT one. Which is the EXCEPTION?

A) Stylohyoid muscle
B) Submandibular gland
C) Lacrimal gland
D) Soft palate

Question 17

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.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 18

Each of the following cranial nerves is involved in motor or sensory eye innervation EXCEPT one? Which is the EXCEPTION?

A) I
B) II
C) III
D) IV
E) VI

Question 19

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.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 20

The tenth cranial nerve has motor innervations to the root of the tongue and epiglottis. It supplies both motor and sensory innervation to the muscles of the pharynx and larynx.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 21

The olfactory nerve has sensory and motor functions.

Question 22

The infraorbital nerve supplies sensation to each of the following EXCEPT one. Which is the EXCEPTION?

A) Maxillary lingual gingiva
B) Maxillary anterior teeth
C) Part of the maxillary sinus
D) The lower eyelid

Question 23

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

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 24

The nasopalatine nerve leaves the nasal cavity through which foramen?

A) Sphenopalatine
B) Incisive
C) Greater palatine
D) Infraorbital

Question 25

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

A) Descending palatine
B) Zygomatic
C) Infraorbital
D) Sphenopalatine

Question 26

The mucosa of the mandibular lip and labial gingiva will be anesthetized following an inferior alveolar injection because the buccal nerve branches out laterally to supply these areas.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 27

Eyesight is supplied by cranial nerves II and III.

Question 28

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.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 29

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

Question 30

Which of the following accurately describe functions of the brain (select all that apply)?

A) It may file information in memory for future reference.
B) It may act immediately to incoming stimuli.
C) It coordinates muscle contraction.
D) It coordinates glandular secretion.
E) Authorities theorize that humans utilize approximately 60% of their mental capacity.

Question 31

Motor supply to the tensor veli palatini comes from the trigeminal nerve.

Question 32

Which of the following structures generally does not have sensory innervation from the posterior superior alveolar nerve?

A) Mesiobuccal root of the maxillary first molar
B) Distobuccal root of the maxillary first molar
C) Maxillary second molar
D) Maxillary buccal gingiva of maxillary molars