exam 4: Head, skull, foramina, CN (30) Flashcards
1
Q
What is the name of CN I
A
olfactory n
2
Q
What is the name of CN II
A
optic n.
3
Q
What is the name of CN III
A
oculomotor n.
4
Q
What is the name of CN IV
A
CN 4
trochlear n.
5
Q
What is the name of CN VI
A
CN 6
abducens n.
6
Q
What is the name of CN VII
A
CN 7
facial n
7
Q
What is the name of CN IX
A
CN 9
glossopharyngeal n.
8
Q
What is the name of CN XII
A
CN 12
hypoglossal n.
9
Q
What is the name of CN XI
A
CN 11
accessory n.
10
Q
What is the name of CN X
A
CN 10
vagus n.
11
Q
What is the name of CN VIII
A
CN 8
vestibulocochlear n
12
Q
What is the name of CN V
A
CN 5
Trigeminal n.
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)
14
Q
Label the parts of the occipital bone
A
1.Foramen Magnum
2. Lateral parts
3.Basilar part
15
Q
identify
A
basilar part
16
Q
Identify 1 and 2
what nerves pass through each of these
A
- Hypoglossal canal= XII (12) Hypoglossal nerve
- Tympano-occipital
fissure
IX (9) glossopharyngeal n.
X (10) Vagus n.
XI (11) accessory n.
17
Q
Identify 1 and 2
A
- Hypoglossal canal
- Tympanooccipital fissure
18
Q
Identify the process
A
Tentorial process
19
Q
what is the difference between a fissure and a foramen
A
fissure= between 2 bones
foramen= hole in one bone
20
Q
What does Hypoglossal mean
A
Hypo= under
glossal= tongue
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
22
Q
Identify the structure the arrow is pointing to?
what structure in the star on?
A
red arrow= Tentorial process
star= cerebellum
23
Q
what bone corresponds with the blue (1)
what bone corresponds with the green (2)
A
- Interparietal bone
- Occipital bone
24
Q
Identify the parts of the temporal bone
A
1.Squamous part
2. Petrosal part
3. Tympanic part
25
Identify 1 and 2 of the temporal bone
1.Zygomatic process
2. Mandibular fossa
26
Identify the part of the temporal bone
Petrosal part
27
Identify 1-3
1. Jugular foramen
2. Internal acoustic meatus
3. Canal for trigeminal nerve
28
what CN pass through this foramen
CN IX(9)
CN X(10)
CN XI (11)
29
what CN pass through this structure
structre: Internal acoustic meatus
Facial n. (CN VII) (7)
Vestibulocochlear n. (CN VIII)(8)
30
what nerve passes through this structure
structure:
Canal for trigeminal nerve
CN V (5)
31
Identify 1 and 2
1. Mastoides process
2. Stylomastoid foramen
32
what nerve passes through the Stylomastoid foramen
Facial n. CN VII (7)
**common exam question**
33
Identify 1-3 of the tympanic part of the temporal bone
1. external acoustic meatus
2.Tympanic bulla
3. Retroarticular foramen
34
what passes through the Retroarticular foramen
Retroarticular vein
35
Identify 1 and 2
1. External acoustic meatus
2. typmanic bulla
36
Short bony canal where
the tympanic membrane
is attached.
Is the landmark between the middle and the external
ear.
External acoustic meatus
37
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
Tympanic bulla
38
identify 1 and 2
1. External acoustic meatus
2. Tympanic bulla
39
what two bones make up the sphenoid bones
1. Presphenoid
2. Basisphenoid
40
Identify the structure and the nerves that pass through it
Orbital fissure
Oculomotor n. CV III
Trochlear n. CN IV
Abducens n. CN VI
Ophthalmic n. CN V1 (branch of trigyminal) f
41
Identify the structure and the nerves that pass through it
Round foramen
Maxillary n. CN V2
42
Identify the structure and the nerves that pass through it
Oval foramen
Mandibular n. CN V3
43
Most caudal bony prominence of the sella turcica
Dorsum sellae
44
Fossa for the hypophysis. In in the middle of a larger depression known as Sella turcica (Turk
chair)
Hypophyseal fossa
45
identify 1 and 2
1.Hypophyseal fossa
2. Dorsum sellae
46
Identify 1 and 2
1. Dorsum sellae
2. Hypophyseal fossa
47
Identify 1 and 2 of the Basisphenoid
1. Orbital fissure
2. Oval foramen
48
Identify 1-3
1.Rostral alar foramen
2. Alar canal
3. Caudal alar foramen
49
Identify the parts of the Presphenoid
1. Optic canals
2.Chiasmatic groove
50
what nerves pass through the optic canals
Optic n. CN II
51
Bony groove for the nervous structure known as Optic chiasm that correspond to the optic nerves crossover
Chiasmatic groove
52
identify
Chiasmatic groove
53
Identify parts 1-3 of the frontal bone
1. Zygomatic process
2. Temporal surface
3. Orbital part
54
identify
frontal sinus
55
Identify
frontal sinus
56
identify
frontal sinus
57
vomer
58
Bony wall between the cranial and nasal cavities
Cribriform plate
59
identify 1-3
1. Perpendicular plate
2. Ethmoidal labyrinth-
ethmoturbinates bones
3.Cribriform plate
60
Identify the structure and the nerves that pass through it
Cribriform plate:
Olfactory nn. CN I
Vomeronasal nn
61
identify
Perpendicular plate
(part of the Ethmoidal bone)
62
Identify
Lacrimal bone with the fossa for the
lacrimal sac
63
Bony canal between the
Infraorbital foramen - Maxillary foramen
Infraorbital canal
64
identify 1 and 2
1. Infraorbital canal
2. Infraorbital foramen
65
what nerves pass through the Infraorbital foramen
Branches of maxillary n. CN V2
66
what nerve passes through the maxillary foramen
maxillary n. CN V2
67
Identify 1 and 2
1. Pterygopalatine fossa
2. Maxillary foramen (caudal opening of infraorbital canal) Maxillary n CN V2
68
identify 1 and 2
1.Infraorbital foramen
2. Maxillary foramen
69
what is the rostral opening of the infraorbital canal??
what is the caudal opening of the infraorbital canal?
Infraorbital foramen
(rostral opening)
Maxillary foramen
(caudal opening
70
Explain where you are placing the nerve block in this photo
Target: Maxillary n. V2 (branch of CN)
Needle in infraorbital foramen, to block nerve--> allows us to use less anesthesia for extraction
71
identify 1 and 2
what nerve(s) pass through
1.Sphenopalatine foramen (go to nasal cavity)
2.Caudal palatine foramen (go to palate)
Both have branches of
maxillary n. CN V2
72
identify the parts of the palatine process
more rostral arrow= Major palatine foramen
arrow under that= Minor palatine foramen
73
what nerve passes through the Major palatine foramen and Minor palatine foramen
Branches of maxillary n.
CN V2
74
Identify the parts if the palatine
1.Horizontal lamina
2. Perpendicular lamina
75
Name the parts of the mandible
1.Ramus of the mandible
2. Angular process
3.Body of the mandible
76
name the parts of the mandible
1. Coronoid process
2. Mandibular notch
3. Condylar process
4. Angular process
77
identify 1 and 2
1. Mandibular cana
2. Mandibular foramen
78
Caudal opening of Mandibular canal that the Branch of mandibular n. CN V3 passes through
Mandibular foramen
79
Bony canal inside the mandible, medial side
Mandibular canal
80
identify
1. Masseteric fossa
2.Mental foramina
81
Rostral opening of Mandibular canal that Branches of mandibular n. CN V3 pass through
Mental foramina
82
83
what does the Vestibulocochlear n (CN VII) aid with
sound
balance
84
what is the main sensory nerve of the head
CN V (trigeminal nerve)
