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Flashcards in Cranial Nerves Deck (62):
1

What is the most rostral part of the brainstem anteriorly?

Mammilary Bodies

2

What is the function of the mamillary bodies?

Spatial and episodic memory

3

CN 12

Hypoglossal (M)

4

CN 11

Accessory (M)

5

CN 10

Vagus (B)

6

CN 9

Glossopharyngeal (B)

7

CN 8

Vestibulochochlear (S)

8

CN 7

Facial (B)

9

CN 6

Abducens (M)

10

CN 5

Trigeminal (B)

11

CN 4

Trochlear (M)

12

CN 3

Oculomotor (M)

13

CN 2

Optic (S)

14

CN 1

Olfactory (S)

15

What is the rule of 4 and show its application?

4 Nerves Before the Pons (only 3-4 at midbrain)
4 Nerves at the Pons
4 Nerves after the Pons

16

in terms of columns in the brainstem, what is more medial motor or sensory?

Motor

17

How many columns are in the motor division and what are they?

3 And from medial to lateral
Somatic ---> Branchial ---> Visceral

18

What is the Somatic Strip?

Muscles that can be controlled voluntarily

19

What is the branchial strip?

Muscles of the face

20

What is the visceral strip?

in charge of innervation of visceral structures

21

In terms of the Midbrain - Pons - Medulla - SC what nerves come out at each level in the somatic strip of the motor division

3,4 - 6 - 12 - 0

22

In terms of the Midbrain - Pons - Medulla - SC what nerves come out at each level in the branchial strip of the motor division

0 - 5(V3),7 - 9,10 - 11
V3=Mastication Mandibular Rami

23

In terms of the Midbrain - Pons - Medulla - SC what nerves come out at each level in the visceral strip of the motor division

3 - 7 - 9,10 - 0

24

What nucleus is in charge of the parasympathetic component of the CN 3

Edinger Westfal

25

What nucleus is in charge of the parasympathetic component of the CN 7

Sup Salivatory Nucleus

26

What nucleus is in charge of the parasympathetic component of the CN 9

Inf Salivatory Nucleus

27

What is the name of the nucleus for the branchial component of CNs 9 and 10? Where is it located?

Nucleus Ambiguus
At the level of the medulla behind the Inferior Olive

28

What facial muscle does CN 9 controls?

Stylopharingeus

29

What facial muscle does CN 10 controls?

Levator Palati

30

How many columns does the sensory division has?

3, they come lateral to the motor division

31

in the sensory division what is most medial and what is most lateral?

From medial to lateral
Visceral --> Somatic ---> Special Sensory

32

In terms of the Midbrain - Pons - Medulla what nerves come out at each level in the visceral strip of the sensory division

0 - 7 - 9,10 (7,9,10 form a large continuous nucleus)

33

The common nucleus for the CNs 7,9,10 is called and is located at the level of ----

Nucleus Tractus Solitarius (NTS)
Pons and medulla

34

In terms of the Midbrain - Pons - Medulla what nerves come out at each level in the somatic strip of the sensory division

5 - 5,7 - 9,10 (5,7,9,10 form one big nucleus spanning from the most distal part of the pons to the medulla)

35

The nucleus Tractus Solitarius most rostrally is formed by the (1) and more caudally by the (2)

1 Gustatory Nucleus
2 Visceral Sensory

36

Gustatory Nucleus receives information by the Nerves

7,9,10

37

Visceral Sensory information of the Nucleus Tractus Solitarius comes from the nerves (1) and is information from (2)

9 --> Baroreceptors, chemoreceptors from carotid body and sinus
10 --> Heart and abdominal Visceral

38

What type of information and from where does the somatic sensory Strip receives information from?

5 --> face and Mucosa of the mouth and nose
7,9,10 --> skin behind ear and external auditory meatus

39

In terms of the Midbrain - Pons - Medulla what nerves come out at each level in the special sensory strip of the sensory division

0 - 8 - 8 (8 is one nucleus spanning from one area to the next)

40

What nerves come from the anterior cranial fossa?

Cribiform Plate --> 1

41

What nerves come from the middle cranial fossa?

Optic Canal --> 2
Superior Orbital Fissure --> 3,4,5(V1),6

42

What nerves come from the posterior cranial fossa?

Internal Acoustic Meatus ---> 7,8
Jugular Foramen --> 9,10,11
Hypoglossal Foramen --> 12

43

How many nuclei does the trigeminal nerve have?

4
Mesencephalic --> Propioception
Chief Sensory *
Spinal Trigeminal Nucleus (STN) ---> Pain *
Motor Nucleus
* sensory info from face and head

44

the motor part of the trigeminal nerve travels via which division of the nerve?

The mandibular Division

45

the motor action of CN 7 is to

Face and the Stapedius Muscle (Dampening of sound)

46

the sensory and parasympathetic action of CN7 is via what nerve

Nervus intermedius

47

the sensory information of the anterior 2/3 of the tongue and small part of the external auditory meatus travel via

CN 7

48

where do the terminal branches of CN 7 originate and what are they?

in the parotid gland
Temporal, Zygomatic, Buccal, Mandibular, Cervical

49

Parasympathetic innervation of CN7 is to the

Lacrimal Gland

50

the sensory information of the posterior 1/3 of the tongue travels via the

Glosopharyngeal nerve (9)

51

the sensory information of the posterior 1/3 of the tongue, pharynx, middle ear, and carotid body (visceral) travels via the

Glosopharyngeal nerve (9)

52

The motor supply of the Glosopharyngeal nerve (9) is given to which muscle?

stylopharingeus

53

Visceral Motor supply given by the Glosopharyngeal nerve (9) is to the

Parotid Gland (parasympathetic)

54

Motor supply of the vagus nerve is given to

soft palate, pharynx, larynx, upper oesophagus, palatoglossus (tongue muscle)

55

Visceral sensory information of the vagus nerve comes from

baro- and chemoreceptors of the aortic arch

56

What nerve gives nerve supply to the vocal cords?

Recurrent Laryngeal (branch of 10)

57

what is the afferent, efferent of the PUPILLARY REFLEX and what brain structure does it test for?

A: Optic Nerve
E: Oculomotor
Tests 4: Midbrain Function

58

what is the afferent, efferent of the CORNEAL BLINK REFLEX and what brain structure does it test for?

A: Ophthalmic Branch of Trigeminal Nerve (V1)
E: Facial (orbicularis Oculi)
Tests 4: Pons Function

59

what is the afferent, efferent of the GAG REFLEX and what brain structure does it test for?

A: Glossopharyngeal
E: Vagus
Tests 4: Medullary Function

60

CN 12 controls...

intrinsic/extrinsic muscles of the tongue

61

if the accessory nerve is damaged the patient cannot turn the head towards the ipsilateral/contralateral side

towards the contralateral side of the lesioned nerve

62

Trigeminal nerve is for

sensation of the face, muscle of mastication, and tensor tympani muscle