Cranial Nerves

Question 1

Cranial nerves I and II attach to:

Answer 1

Forebrain

Question 2

Cranial nerves are attached to brain and pass through?

Answer 2

Foramina magnum of skull

Question 3

CN I attached to:

Answer 3

Telencephalon

Question 4

CN II attached to:

Answer 4

Diencephalon

Question 5

Olfactory Nerves

Answer 5

Sensory nerves of smell

Question 6

Olfactory System

Answer 6

afferent neurons on the nasal mucosal membrane, olfactory bulb, portions of temporal lobe and inferior frontal lobe, and limbic lobe

Question 7

Unmyelinated axons of CN I terminate:

Answer 7

In the two olfactory bulbs

Question 8

Cortical olfactory regions are responsible for:

Answer 8

Olfactory awareness

Question 9

Limbic connects of Olfactory nerves responsible for:

Answer 9

integrating smell with emotional brain

Question 10

Anosmia/hyposmia

Answer 10

Reduction/loss of ability to smell

Question 11

Hyperosmia

Answer 11

Abnormally acute sensation of smell

Question 12

CN II

Answer 12

Optic Nerve

Question 13

Optic Tract terminates

Answer 13

Lateral geniculate body of thalamus

Question 14

From LGB, optic radiations travel

Answer 14

primary visual cortex of occipital lobe

Question 15

Optic nerve lesions result in

Answer 15

Ipsi Blindness

Question 16

Chiasmatic lesion result in:

Answer 16

Bitemporal hemianopsia

Question 17

Post chiasmatic lesions close to LGB result in:

Answer 17

Unilateral homonymous hemianopsia

Question 18

Legions distal to geniculate ganglion result in:

Answer 18

upper or lower homonymous quadrantopsia

Question 19

CN III

Answer 19

Oculomotor Nerve

Question 20

Oculomotor Nerve innervates

Answer 20

Four of the six extrinsic eye muslces

Question 21

Somatic portion of CNIII

Answer 21

responsible for eye and eye lid movement

Question 22

Visceral portion of CNII

Answer 22

Controls function such as pupillary constriction

Question 23

Unilateral damage to oculomotor nerve results in deficits in the:

Answer 23

ipsilateral eye

Question 24

External opthalamoplegia

Answer 24

paralysis of extrinsic muscles leads to deviation of ipsi eye and eyelid drooping

Question 25

Internal opthalomoplegia

Answer 25

paralysis of intrinsic muscles, permanent dilation of pupil

Question 26

CN IV

Answer 26

Trochlear Nerve

Question 27

CN IV Innervates

Answer 27

Innervates extrinsic eye muscle; moves eyeball outward and downward

Question 28

CN IV is the only CN that:

Answer 28

exits posterior side of brainstem

Question 29

Damage of CN IV

Answer 29

Difficulty of looking downward and outward

Question 30

CN VI

Answer 30

Abducens nerve

Question 31

CN VI innervares

Answer 31

Lateral rectus muscle, abducts eye ball

Question 32

Medial longitudinal fasciculus important

Answer 32

coordinates eye muscles for gaze control

Question 33

CN V

Answer 33

Trigeminal Nerve, largest

Question 34

Sensory innvervations of CN V

Answer 34

From face & motor innervations to chewing muscle

Question 35

Jaw Jerk reflex

Answer 35

Reflex arc of nerve

Question 36

Three branches of trigeminal nerve

Answer 36

Opthalmic nerve, maxillary nerve, mandibular nerve

Question 37

Responsible for cutaneous and proprioceptive sensations from face, head oral nasal

Answer 37

Trigeminal nerve

Question 38

CN V controls muscles involved in chewing but not:

Answer 38

Facial expression

Question 39

Mandibular nerve carries only:

Answer 39

general sensory sensation from the mouth, not taste

Question 40

Taste from anterior 2/3 of tongue:

Answer 40

Cranial nerve VII

Question 41

Taste from posterior 1/3 are carried by

Answer 41

Cranial nerve VII, IX, X

Question 42

Trigeminal neuralgia

Answer 42

Intense pain in eyes lips, nose, scalp

Question 43

Damage to motor portion of V

Answer 43

Paralysis of ipsilateral muscles of mastication

Question 44

Wallenberg Syndrome

Answer 44

Loss/pain on face ipsi, but body contra

Question 45

CN VII

Answer 45

Facial Nerve

Question 46

Facial nerve is a

Answer 46

Mixed nerve,

Question 47

Facial nerve controls

Answer 47

muscles of facial expression, but also taste information

Question 48

Damage to CN VII at level of pons?

Answer 48

All three main functions will affect ipsi muscles, excessive secretion, and loss of taste

Question 49

CN IX

Answer 49

Glossopharyngeal

Question 50

Glossopharyngal function

Answer 50

sensory and motor innervations of structures of tongue and pharynx

Question 51

Functions of IX include:

Answer 51

Sensory from post 1/3 of tongue, fibers to parotid salivary gland, motor fiberes to pharyngal muslces, swallowing

Question 52

CN X

Answer 52

Vagus Nerve, mixed

Question 53

Longest CN?

Answer 53

Vagus nerve

Question 54

Vagus nerve important for?

Answer 54

Phonation and swallowing

Question 55

Sensory information of Vagus

Answer 55

From external ear, pharynx, larynx, esophagus, trachea, heart

Question 56

Motor fibers of vagus

Answer 56

Pharynx and most larynx, soft palate

Question 57

CN XI

Answer 57

Accessory nerve, Controls head movement

Question 58

CN XII

Answer 58

Hypoglossal nerve

Question 59

Hypoglossal is a

Answer 59

motor nerve

Question 60

Hypoglossal innervates

Answer 60

3/4 major extrinsic muscles of the tongue

Question 61

Deviation of the ipsi eye to the lateral side

Answer 61

Lateral striabismus

Question 62

Eyelid drooping

Answer 62

ptosis

Question 63

Double vision

Answer 63

Diplopia

Question 64

Permanent dilation of the pupil

Answer 64

mydriasis

Question 65

Motor nucleus that controls lower half of face:

Answer 65

Receives projections from the contralateral motor cortex alone

Question 66

Facial nucleus supplying upper facial muscles

Answer 66

received corticobulbar projects from both motor cortices

Question 67

Controls all of our voluntary movement

Answer 67

Pyramidal motor system or tract

Question 68

Two main neuron systems of Pyramidal system

Answer 68

UMN, LMN

Question 69

Extra-pyramidal motor system

Answer 69

Responsible for maintaining rhythmic, phasic behavior, does not initiate movement

Question 70

Upper motor neurons

Answer 70

Originate in the cerebral cortex, terminate in brainstem

Question 71

Muscles of face, head and neck are controlled by:

Answer 71

Corticobulbar system

Question 72

Lower motor neurons

Answer 72

Connect brainstem an dspinal cord to muscle fibers

Question 73

Bell's Palsy

Answer 73

Paralysis of upper and lower facial muscles