Cranial Nerves

Question 1

Cranial Nerve 1

Answer 1

Olfactory

Question 2

Cranial Nerve 1 - Foramen

Answer 2

Cribriform Plate (Ethmoid Bone)

Question 3

Cranial Nerve 1 - Function

Answer 3

Sensory Information about Olfaction is sent to the Olfactory complex of the Temporal lobe (Piriform Cortex).

Question 4

Cranial Nerve 2

Answer 4

Optic

Question 5

Cranial Nerve 2 Foramen

Answer 5

Optic Canal

Question 6

Cranial Nerve 2 Function

Answer 6

the retina sends Sensory fibers to the thalamus—1/2 cross-optic chiasm. They are relayed to the lateral geniculate nucleus. Then to calcarine fissure.

Question 7

Cranial Nerve 3

Answer 7

Oculomotor

Question 8

Cranial Nerve 3- foramen

Answer 8

Superior Orbital Fissure

Question 9

Cranial Nerve 3 - Function

Answer 9

The oculomotor nucleus in the midbrain sends fibers to 5/7 extraocular muscles except Lateral Rectus and Superior Oblique

Question 10

Cranial Nerve 3- Parasympathetic

Answer 10

Edinger Westphal nucleus sends tracts traveling through the III cranial nerve where it reaches the ciliary ganglion. From there it acts upon the ciliary body and construction of the pupil.

Question 11

Cranial Nerve 4

Answer 11

Trochlear

Question 12

Cranial Nerve 4 Foramen

Answer 12

Superior Orbital Fissure

Question 13

Cranial Nerve 4 Function

Answer 13

The Trochlear Nucleus in the midbrain sends motor fibers to the superior oblique muscles.

Question 14

Cranial Nerve 5

Answer 14

Trigeminal

Question 15

Cranial Nerve 5 Function

Answer 15

V1-Opthalamic - Sensory information to Upper face
V2-Maxillary - Sensory Information to Middle Face/Nose and Upper Teeth
V3- Mandibular - Sensory Information to Lower face and lower teeth and anterior 2/3 of tongue.
Motor Information to the muscles of mastication

Question 16

Cranial Nerve 5 Foramen

Answer 16

V1-Opthalamic - Superior Orbital Fissure
V2-Maxillary- Foramen Rotundum
V3- Mandibular- Foramen Ovale

Question 17

Cranial Nerve 6

Answer 17

Abducens

Question 18

Cranial Nerve 6 Function

Answer 18

Motor neurons travel from abducens nucleus in pons to the lateral rectus muscle of the extraocular muscles

Question 19

Cranial Nerve 6 Foramen

Answer 19

Superior Orbital Fissure

Question 20

Cranial Nerve 7

Answer 20

Facial

Question 21

Cranial Nerve 7 Function

Answer 21

Sensory information is obtained for taste from the anterior 2/3 of the tongue, motor information is sent to the muscles of facial expression.

Question 22

Cranial Nerve 7 Foramen

Answer 22

Internal Acoustic Meatus

Question 23

Cranial Nerve 7 parasympatetic

Answer 23

Starting in the Superior Salivatory nucleus singlas travel through the 7th cranial nerve to reach the pterygopalatine ganglion or the submandibular ganglion. Fibers then either go to the lacrimal/nasal glands or the submandibular/sublingual glands.

Question 24

Cranial Nerve 8

Answer 24

Vestobucochlear

Question 25

Cranial Nerve 8 Function

Answer 25

Sensory information from the cochlea and semicircular canals is sent to pons. Then are sent to the Medial Geniculate Nucleus which relays information to the superior temporal gyrus.

Question 26

Cranial Nerve 8 Foramen

Answer 26

Internal Acoustic Meatus

Question 27

Cranial Nerve 9

Answer 27

Glossopharyngeal

Question 28

Cranial Nerve 9 Function

Answer 28

Sensory information from general taste and sensory information in the posterior 1/3 of the tongue. Motor information is sent to muscles of the pharynx

Question 29

Cranial Nerve 9 Foramen

Answer 29

Jugular Foramen

Question 30

Cranial Nerve 9 Parasympathetic

Answer 30

Starting at the inferior salivatory nucleus in the medulla they target the otic ganglion from there they go on to target the parotid gland

Question 31

Cranial Nerve 10

Answer 31

Vagus

Question 32

Cranial Nerve 10 Function

Answer 32

Both sensory information in the head, neck,thorax, and pelvis, as the motor fibers target the larynx and pharynx

Question 33

Cranial Nerve 10 Foramen

Answer 33

Jugular Foramen

Question 34

Cranial Nerve 10 Parasympathetic

Answer 34

Starting in the Dorsal Motor Nuclei fibers travel down the vagus nerve to innervate structures like bronchi, heart, stomach, intestines

Question 35

Cranial Nerve 11

Answer 35

Spinal Accessory

Question 36

Cranial Nerve 11 Function

Answer 36

Motor information travels from the cervical spinal cord to the muscles sternocleidomastoid and Trapezius.

Question 37

Cranial Nerve 11Foramen

Answer 37

Jugular Foramen

Question 38

Cranial Nerve 12

Answer 38

Hypoglossal

Question 39

Cranial Nerve 12 Function

Answer 39

Motor information travels from hypoglossal nucleus in pons to the muscles of the tongue

Question 40

Cranial Nerve 12 Foramen

Answer 40

Hypoglossal canal