Cranial Nerves

Question 1

What are the cranial nerves?

Answer 1

I - Olfactory
II - Optic
III - Oculomotor
IV - Trochlear
V - Trigeminal
VI - Abducens
VII - Facial
VIII - Vestibulocochlear
IX - Glossopharyngeal
X - Vagus
XI - Accessory
XII - Hypoglossal

Question 2

Afferent refers to ______.

Answer 2

sensory information (input)

Question 3

Efferent refers to ________.

Answer 3

motor information (output)

Question 4

What the 4 general senses?

Answer 4

touch, temperature, pain, proprioception from body wall and limbs

Question 5

What are the 3 visceral senses?

Answer 5

stretch, anoxia, pain from viscera

Question 6

What are the 5 special senses?

Answer 6

vision, hearing, balance, smell, taste

Question 7

Somatic motor information goes to what type of muscle?

Answer 7

striated muscle

Question 8

Visceral motor information goes to what structures?

Answer 8

smooth muscle
glands
enteric nervous system of the GI tract

Question 9

Pharyngeal arch 1 is innervated by what cranial nerve?

Answer 9

V3

Question 10

Pharyngeal arch 2 is innervated by what cranial nerve?

Answer 10

VII

Question 11

Pharyngeal arch 3 is innervated by what cranial nerve?

Answer 11

IX

Question 12

Pharyngeal arch 4 is innervated by what cranial nerve?

Answer 12

X

Question 13

The telencephalon is innervated by what cranial nerve?

Answer 13

I - Olfactory

Question 14

The diencephalon is innervated by what cranial nerve?

Answer 14

II - Optic

Question 15

The mesencephalon is innervated by what cranial nerve?

Answer 15

III - Oculomotor

IV - Trochlear

Question 16

The metencephalon is innervated by what cranial nerve?

Answer 16

V - Trigeminal

Question 17

The myetencephalon is innervated by what cranial nerve?

Answer 17

Pons - VI,VII,VIII (Abducens, Facial, Vestibuloccochlear)
Medulla - IX, X, XI, XII
(Glossopharyngeal, Vagus, Accesory, Hypoglossal)

Question 18

What are the cranial nerve attachments of the midbrain?

Answer 18

III, IV

Question 19

What are the cranial nerve attachments of the pons?

Answer 19

V

Question 20

What are the cranial nerve attachments of the pons-medulla junction?

Answer 20

VI, VII, VIII

Question 21

What are the cranial nerve attachments of the medulla?

Answer 21

IX, X, XII

Question 22

What are the cranial nerve attachments of the spinal cord?

Answer 22

XI

Question 23

Cranial nerves leave the skull in order from ____ to _____.

Answer 23

anterior, posterior

Question 24

True or False? The olfactory nerve consists of numerous bundles of unmyelinated axons from bipolar neurons in the nasal mucosa.

Answer 24

True

Question 25

Axons from the mitral cells pass to the telencephalon as the _______.

Answer 25

olfactory tract

Question 26

The olfactory nerve is classified as _____.

Answer 26

SVA | Special, Visceral, Afferent

Question 27

The _____ nerves are formed by the axons of ganglion cells in the retina.

Answer 27

optic

Question 28

Some of the fibers of the optic nerve cross at the ________ and join the contralateral optic tract, so the right visual field projects to the left and the lateral geniculate body, and vice versa.

Answer 28

optic chiasm

Question 29

The optic chiasm and tracts are located in the _________.

Answer 29

diencephalon

Question 30

The optic nerve is made up of _______ fibers.

Answer 30

SSA | Special, Somatic, Afferent

Question 31

_____, _______, and ______ are motor nerves to striated muscles of the orbit that are derived from head somites. They supply the extraocular muscles that move the eye.

Answer 31

CN III, IV, and VI

Question 32

_____ and ______ arise from the midbrain (mesencephalon).

Answer 32

CN III, IV

Question 33

_______ innervates most of the extraocular muscles (GSE). It also provides parasympathetic preganglionic fibers (GVE) to the ciliary ganglion whose postganglionic fibers help control pupillary diameter.

Answer 33

CN III

Question 34

______ supplies one muscle, the superior oblique. It is the only cranial nerve to originate from the dorsal or superior surface of the midbrain.

Answer 34

CN IV

Question 35

________ also supplies one muscle, the lateral rectus. It is actually a nerve of the myelencephalon and arises from the brain at the pons - medulla junction. It travels into the orbit with cranial nerves III, IV, and V1.

Answer 35

CN VI

Question 36

What are the three exits of the trigeminal nerve branches?

Answer 36

Superior orbital fissure Foramen rotundum Foramen ovale

Question 37

Cell bodies for taste fibers are in the ________.

Answer 37

geniculate ganglion in the petrous temporal bone

Question 38

__________ (General visceral efferent GVE) in the greater petrosal nerve control secretion of mucus while GVE fibers in the chorda tympani control secretion of saliva.

Answer 38

Parasympathetic preganglionic fibers

Question 39

What modality is associated with a large area (body wall and limbs or viscera)?

Answer 39

General

Question 40

What modality associated with one organ or area?

Answer 40

Special

Question 41

What modality is striated muscle derived from somites?

Answer 41

Somatic

Question 42

What modality is associated with GI tract either striated muscle derived from branchial arches (mouth, pharynx, larynx) or parasympathetic to smooth muscles and glands?

Answer 42

Visceral

Question 43

What are the categories for the modalities?

Answer 43

General or Special, Somatic or Visceral, Afferent or Efferent

Question 44

Branchial arch 1 is associated with what nerve?

Answer 44

V3

Question 45

Branchial arch 2 is associated with what nerve?

Answer 45

VII

Question 46

Branchial arch 3 is associated with what nerve?

Answer 46

IX

Question 47

Branchial arch 4 is associated with what nerve?

Answer 47

X

Question 48

Rostral is _____, caudal is ________.

Answer 48

head, tail

Question 49

Information from the right visual field goes to the _____ lateral geniculate.

Answer 49

left

Question 50

What cranial nerve arise from the dorsal side of the brain?

Answer 50

trochlear