exam 4: Head, skull, foramina, CN (30) Flashcards

1
Q

What is the name of CN I

A

olfactory n

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2
Q

What is the name of CN II

A

optic n.

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3
Q

What is the name of CN III

A

oculomotor n.

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4
Q

What is the name of CN IV

A

CN 4
trochlear n.

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5
Q

What is the name of CN VI

A

CN 6
abducens n.

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6
Q

What is the name of CN VII

A

CN 7
facial n

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7
Q

What is the name of CN IX

A

CN 9
glossopharyngeal n.

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8
Q

What is the name of CN XII

A

CN 12
hypoglossal n.

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9
Q

What is the name of CN XI

A

CN 11
accessory n.

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10
Q

What is the name of CN X

A

CN 10
vagus n.

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11
Q

What is the name of CN VIII

A

CN 8
vestibulocochlear n

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12
Q

What is the name of CN V

A

CN 5
Trigeminal n.

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13
Q

Why to know the skull & mandible foramina?

A

Helps us know where to do a nerve block in animals for certain procedures (ex. teeth)

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14
Q

Label the parts of the occipital bone

A

1.Foramen Magnum
2. Lateral parts
3.Basilar part

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15
Q

identify

A

basilar part

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16
Q

Identify 1 and 2

what nerves pass through each of these

A
  1. Hypoglossal canal= XII (12) Hypoglossal nerve
  2. Tympano-occipital
    fissure
    IX (9) glossopharyngeal n.
    X (10) Vagus n.
    XI (11) accessory n.
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17
Q

Identify 1 and 2

A
  1. Hypoglossal canal
  2. Tympanooccipital fissure
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18
Q

Identify the process

A

Tentorial process

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19
Q

what is the difference between a fissure and a foramen

A

fissure= between 2 bones

foramen= hole in one bone

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20
Q

What does Hypoglossal mean

A

Hypo= under
glossal= tongue

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21
Q

What is the purpose of the Tentorial process? What animals have this?

A

serves as a “tent” to cover the cerebellum

very big in carnivores

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22
Q

Identify the structure the arrow is pointing to?

what structure in the star on?

A

red arrow= Tentorial process

star= cerebellum

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23
Q

what bone corresponds with the blue (1)

what bone corresponds with the green (2)

A
  1. Interparietal bone
  2. Occipital bone
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24
Q

Identify the parts of the temporal bone

A

1.Squamous part
2. Petrosal part
3. Tympanic part

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25
Q

Identify 1 and 2 of the temporal bone

A

1.Zygomatic process
2. Mandibular fossa

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26
Q

Identify the part of the temporal bone

A

Petrosal part

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27
Q

Identify 1-3

A
  1. Jugular foramen
  2. Internal acoustic meatus
  3. Canal for trigeminal nerve
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28
Q

what CN pass through this foramen

A

CN IX(9)
CN X(10)
CN XI (11)

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29
Q

what CN pass through this structure

A

structre: Internal acoustic meatus

Facial n. (CN VII) (7)

Vestibulocochlear n. (CN VIII)(8)

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30
Q

what nerve passes through this structure

A

structure:
Canal for trigeminal nerve

CN V (5)

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31
Q

Identify 1 and 2

A
  1. Mastoides process
  2. Stylomastoid foramen
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32
Q

what nerve passes through the Stylomastoid foramen

A

Facial n. CN VII (7)

common exam question

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33
Q

Identify 1-3 of the tympanic part of the temporal bone

A
  1. external acoustic meatus
    2.Tympanic bulla
  2. Retroarticular foramen
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34
Q

what passes through the Retroarticular foramen

A

Retroarticular vein

35
Q

Identify 1 and 2

A
  1. External acoustic meatus
  2. typmanic bulla
36
Q

Short bony canal where
the tympanic membrane
is attached.

Is the landmark between the middle and the external
ear.

A

External acoustic meatus

37
Q

Air filled bony cavity in the
tympanic portion of temporal bone.

Form the tympanic
cavity of the middle ear,
were the three small ossicles live

A

Tympanic bulla

38
Q

identify 1 and 2

A
  1. External acoustic meatus
  2. Tympanic bulla
39
Q

what two bones make up the sphenoid bones

A
  1. Presphenoid
  2. Basisphenoid
40
Q

Identify the structure and the nerves that pass through it

A

Orbital fissure

Oculomotor n. CV III
Trochlear n. CN IV
Abducens n. CN VI
Ophthalmic n. CN V1 (branch of trigyminal) f

41
Q

Identify the structure and the nerves that pass through it

A

Round foramen

Maxillary n. CN V2

42
Q

Identify the structure and the nerves that pass through it

A

Oval foramen
Mandibular n. CN V3

43
Q

Most caudal bony prominence of the sella turcica

A

Dorsum sellae

44
Q

Fossa for the hypophysis. In in the middle of a larger depression known as Sella turcica (Turk
chair)

A

Hypophyseal fossa

45
Q

identify 1 and 2

A

1.Hypophyseal fossa
2. Dorsum sellae

46
Q

Identify 1 and 2

A
  1. Dorsum sellae
  2. Hypophyseal fossa
47
Q

Identify 1 and 2 of the Basisphenoid

A
  1. Orbital fissure
  2. Oval foramen
48
Q

Identify 1-3

A

1.Rostral alar foramen
2. Alar canal
3. Caudal alar foramen

49
Q

Identify the parts of the Presphenoid

A
  1. Optic canals
    2.Chiasmatic groove
50
Q

what nerves pass through the optic canals

A

Optic n. CN II

51
Q

Bony groove for the nervous structure known as Optic chiasm that correspond to the optic nerves crossover

A

Chiasmatic groove

52
Q

identify

A

Chiasmatic groove

53
Q

Identify parts 1-3 of the frontal bone

A
  1. Zygomatic process
  2. Temporal surface
  3. Orbital part
54
Q

identify

A

frontal sinus

55
Q

Identify

A

frontal sinus

56
Q

identify

A

frontal sinus

57
Q
A

vomer

58
Q

Bony wall between the cranial and nasal cavities

A

Cribriform plate

59
Q

identify 1-3

A
  1. Perpendicular plate
  2. Ethmoidal labyrinth-
    ethmoturbinates bones

3.Cribriform plate

60
Q

Identify the structure and the nerves that pass through it

A

Cribriform plate:

Olfactory nn. CN I
Vomeronasal nn

61
Q

identify

A

Perpendicular plate

(part of the Ethmoidal bone)

62
Q

Identify

A

Lacrimal bone with the fossa for the
lacrimal sac

63
Q

Bony canal between the
Infraorbital foramen - Maxillary foramen

A

Infraorbital canal

64
Q

identify 1 and 2

A
  1. Infraorbital canal
  2. Infraorbital foramen
65
Q

what nerves pass through the Infraorbital foramen

A

Branches of maxillary n. CN V2

66
Q

what nerve passes through the maxillary foramen

A

maxillary n. CN V2

67
Q

Identify 1 and 2

A
  1. Pterygopalatine fossa
  2. Maxillary foramen (caudal opening of infraorbital canal) Maxillary n CN V2
68
Q

identify 1 and 2

A

1.Infraorbital foramen
2. Maxillary foramen

69
Q

what is the rostral opening of the infraorbital canal??

what is the caudal opening of the infraorbital canal?

A

Infraorbital foramen
(rostral opening)

Maxillary foramen
(caudal opening

70
Q

Explain where you are placing the nerve block in this photo

A

Target: Maxillary n. V2 (branch of CN)

Needle in infraorbital foramen, to block nerve–> allows us to use less anesthesia for extraction

71
Q

identify 1 and 2

what nerve(s) pass through

A

1.Sphenopalatine foramen (go to nasal cavity)

2.Caudal palatine foramen (go to palate)

Both have branches of
maxillary n. CN V2

72
Q

identify the parts of the palatine process

A

more rostral arrow= Major palatine foramen

arrow under that= Minor palatine foramen

73
Q

what nerve passes through the Major palatine foramen and Minor palatine foramen

A

Branches of maxillary n.
CN V2

74
Q

Identify the parts if the palatine

A

1.Horizontal lamina
2. Perpendicular lamina

75
Q

Name the parts of the mandible

A

1.Ramus of the mandible
2. Angular process
3.Body of the mandible

76
Q

name the parts of the mandible

A
  1. Coronoid process
  2. Mandibular notch
  3. Condylar process
  4. Angular process
77
Q

identify 1 and 2

A
  1. Mandibular cana
  2. Mandibular foramen
78
Q

Caudal opening of Mandibular canal that the Branch of mandibular n. CN V3 passes through

A

Mandibular foramen

79
Q

Bony canal inside the mandible, medial side

A

Mandibular canal

80
Q

identify

A
  1. Masseteric fossa
    2.Mental foramina
81
Q

Rostral opening of Mandibular canal that Branches of mandibular n. CN V3 pass through

A

Mental foramina

82
Q
A
83
Q

what does the Vestibulocochlear n (CN VII) aid with

A

sound
balance

84
Q

what is the main sensory nerve of the head

A

CN V (trigeminal nerve)