Lab-Nervous System

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1

what is anosmia?

loss of sense of smell

2

what is usually accompany with anosmia?

a considerable loss in the sense of taste

3

what is cranial nerve I?

Olfactory nerve

4

what nerve is responsible for smell?

olfactory nerve

5

what is cranial nerve II?

optic nerve

6

what nerve is responsible for sight?

cranial nerve II or optic nerve

7

which side of the optic nerve crosses over to the opposite side?

medial side

8

severing what area would result in the loss of sight in the medial portion of each eye?

optic chiasma

9

what is cranial nerve III?

oculomotor nerve

10

what nerve innervates the levator palpebrae?

oculomotor nerve

11

external strabismus is a malfunction of which cranial nerve?

oculomotor nerve

12

name all of the things that is a malfunction of the oculomotor nerve?

drooping of the upper eyelid (ptosis), external strabismus, abnormal dilation of the pupil, loss of power of accommodation and slight bulging of the eyeball due to relaxed eye muscles

13

what cranial nerve constrict the pupil or innervated muscles to change the shape of the lens for focusing?

oculomotor or cranial nerve III

14

what is bitemporal hemianopia?

blindness in the temporal field of vision in both eyes

15

pressure or trauma to what nerve can cause loss of function in the same side of the head as the injury?

oculomotor nerve or cranial nerve III

16

what cranial nerve innervate one of the extrinsic muscle that controls downward and lateral movement of the eyeball?

trochlear nerve or cranial nerve IV

17

what is the smallest of the twelve cranial nerve?

trochlear nerve

18

what happens when the trochlear nerve becomes paralyzed?

cause loss of function in the superior oblique so that one is unable to turn his eye outward and downward

19

irritation of what nerve may cause spasms of one of the muscles supplied by it?

trochlear nerve

20

what is cranial nerve V?

trigeminal nerve

21

what is cranial nerve V's motor function?

innervates muscle of massification

22

what is the nerve that's sensory function are involved in sensation of touch, temperature and pain from specific regions of the face

trigeminal nerve

23

what is the largest nerve of the twelve?

cranial nerve V

24

what are the symptoms if the sensory root of cranial nerve V was damages? (5)

anesthesia of half of the face on the side damaged, dryness of the nose, loss of sensation to anterior 2/3 of tongue, and inflammation/irritation to the nerve, intense, pulsating pain

25

what would happen if the cranial nerve V's motor function was damaged?

impaired action of the lower jaw due to paralysis of muscles of mastication of the affected side

26

what is cranial nerve VI?

abducen nerve

27

what nerve is more frequently involved in fractures of the base of the skull than any other cranial nerve?

abducens nerve

28

what happens when the abducens nerve is injured?

partial or complete paralysis of the external rectus muscle and a certain amount of dilation in one of the pupils

29

what may a certain amount of dilation in one of the pupils indicated?

swelling and pressure in the brain

30

what nerve moves the eye laterally?

abducen

31

what is cranial nerve VII?

facial nerve

32

what is the motor function of the facial nerve?

innervate several muscles of facial expression and to stimulate the salivary glands

33

what is the sensory function of the facial nerve?

receives impulses from the anterior portion of the tongue and convey them to the gustatory (taste) areas of the insula

34

what cranial nerve is associated with sublingual and submandibular glands?

facial nerve or cranial nerve VII

35

what cranial nerve is more frequently paralyzed than any of the twelve cranial nerves?

cranial nerve VII

36

what cranial nerve causes Bell's Palsy?

facial nerve

37

When cranial nerve is VIII?

vestibulocochlear nerve

38

name the nerve that is used for the sense of hearing and equilibrium

cranial nerve VIII