Cranial Nerves

Front 1

The Cranial Nerves (CNs) are considered part of what Nervous System

Back 1

Peripheral Nervous system (PNS)

Front 2

The CNs innervate the head an Neck exept for...?

Back 2

CN X - Vagus nerve which innervates the viscera

Front 3

Which two CNs enter the forebrain ?

Back 3

CN I - olfactory
CN II - optic

Front 4

What CN emerges from the cervical spinal cord and not the brain?

Back 4

CN XI - Accessory

Front 5

a mixed nerve has how many nuceli?

Back 5

Atleast 2, must have one sensory and one motor

Front 6

Four functional Components of the Spinal Nerves

Back 6

Somatic sensory, Visceral sensory, Visceral Motor, Somatic Motor

Front 7

Somatic Sensory

Back 7

-Afferent
-Pain, Temp, Mechanical stimuli from somatic structures (skin, joints, muscle)

Front 8

During development, where are the somatic sensory cell bodies located?

Back 8

most posterior to the sulcus limitans in the alarplate

Front 9

Visceral Sensory

Back 9

-Afferent
-Receptive endings in the viscera (walls of blood vessles or digestive tract)

Front 10

During development, where are the visceral sensory cell bodies located

Back 10

just posterior to the sulcus limitans in the alar plate

Front 11

Visceral Motor

Back 11

-Efferent
-Autonomica NS

Front 12

during development, Visceral motor cell bodies are located where?

Back 12

Just anterior to the sulcus limitans inthe basal plate

Front 13

Somatic motor

Back 13

Efferent
-Skeletal muscle

Front 14

During development, Somatic motor cell bodies are located where?

Back 14

Most anterior to the sulcus limitans in the basal plate

Front 15

2 Additional Components of CN's (May or may not have)

Back 15

-Special Sensory: Afferent, Special senses (vision, smell, hearing,balance)
-Brachial motor neurons: Efferent, Innervate striated muscles of the brachiomeric (structures in/near the head and neck in humans

Front 16

Name the Somatic motor Nerves (LMN)

Back 16

III, IV, VI, XII

Front 17

Name the somatic sensory nerves

Back 17

I, II, VIII

Front 18

Name the Brachiomeric nerves

Back 18

V, VII, IX, X, XI

Front 19

Oculomotor ( nerve #, function,nuclei location)

Back 19

-CN III,
-extraocular eye movement (up and out),constricts pupil, changes shape of lens
-Midbrain at the sup. colliculi

Front 20

Lesion to CN III

Back 20

ipsilateral lateral strabismus (eye out)
Diopia-double vision
Ptosis- drooping of the eyelid
Mydriasis-dialted pupil

Front 21

Trochlear Nerve (nerve #, function,nuclei location)

Back 21

-IV
- Move eye down and out
-Midbrain at Inf. Collilculi

Front 22

Lesions to CN IV

Back 22

Strabimus-crossed eyed
Diplopia-head tild to correct

Front 23

Trigeminal (nerve #, function,nuclei location)

Back 23

-V
-Sensory: sensation of 2/3 head
-Motor: controls jaw muscles for chewing
-Nuceli at the Mid pons

Front 24

Lesions of CN V

Back 24

-ipsilateral loss of sensation to head, face, inner oral cavity
-weakness in chewing, jaw deviation to one side
-

Front 25

Trigeminal Neuralgia

Back 25

Sudden, excruciating pain in the head, face, and inner oral cavity due to compression of the trigeminal nerve

Front 26

Abducens (nerve #, function,nuclei location)

Back 26

-CN VI
-abducts the eye
-Nuceli located in Caudal pons (junctino of pons and medulla)

Front 27

Lesions of CN VI

Back 27

Medial strabismus, may also have diplopia

Front 28

Facial (nerve #, function,nuclei location)

Back 28

-VII
-S: Taste for Ant. Tongue
-M: Facial exp, closes eyelid, stapes of middle ear
-Nuclei: Mid to Caudal pons

Front 29

Taste buds of Ant. Tongue

Back 29

Sour,Salt,Sweet

Front 30

Taste buds of Post. Tongue

Back 30

Bitter

Front 31

Lesions to CN VII

Back 31

-decreased taste on Ant. Tongue
-Facial asymmetries

Front 32

Bell's Palsy

Back 32

Damage to the facial nerve which causes ipsilateral loss of function in the face on the ipsilateral side.

Front 33

Glossopharyngeal (CN #, function, Nuclei location)

Back 33

-CN IX
-Taste for Post Tongue and pharyngeal sensation
-Swallowing
-Medulla

Front 34

Lesion to CN IX

Back 34

-Decreased taste on post tongue
-Loss of gag and swallowing reflexes
-Dysphagia-difficulty swallowing

Front 35

Vagus (CN #, function, Nuclei location)

Back 35

- CN X
-Taste from palate to epiglottis, pressure receptors on aortic arch
-Parasympathetic info to and from heart, pulmonary system, esophagus, GI tract, swallowing and speaking
-Medulla

Front 36

Lesions to CN X

Back 36

-Irregular heartbeat, difficulty breathing
-dysphonia-hoarsness
-dysphagia-difficulty speaking
-dysarthria-difficulty moving the mouth for speaking

Front 37

Accessory (CN #, function, Nuclei location)

Back 37

-CN XI
-Head roation,flexion,extension, shoulder elevation and flexion
-Very caudal medulla and cervical spinal cord

Front 38

Lesions to CN XI

Back 38

-Weakness with rotating, flexing, and head
-Weakness with shoulder shrugging

Front 39

Hypoglossal (CN #, function, Nuclei location)

Back 39

-XII
-Tongue movement
-Medulla (between the pyramids and olives)

Front 40

Lesion to CN XII

Back 40

Dysarthria
-deviation of tongue towards side of lesion
-dysphagia
-paralysis of ipsilateral tongue