exam 4: Head, skull, foramina, CN (30) Flashcards
What is the name of CN I
olfactory n
What is the name of CN II
optic n.
What is the name of CN III
oculomotor n.
What is the name of CN IV
CN 4
trochlear n.
What is the name of CN VI
CN 6
abducens n.
What is the name of CN VII
CN 7
facial n
What is the name of CN IX
CN 9
glossopharyngeal n.
What is the name of CN XII
CN 12
hypoglossal n.
What is the name of CN XI
CN 11
accessory n.
What is the name of CN X
CN 10
vagus n.
What is the name of CN VIII
CN 8
vestibulocochlear n
What is the name of CN V
CN 5
Trigeminal n.
Why to know the skull & mandible foramina?
Helps us know where to do a nerve block in animals for certain procedures (ex. teeth)
Label the parts of the occipital bone
1.Foramen Magnum
2. Lateral parts
3.Basilar part
identify
basilar part
Identify 1 and 2
what nerves pass through each of these
- Hypoglossal canal= XII (12) Hypoglossal nerve
- Tympano-occipital
fissure
IX (9) glossopharyngeal n.
X (10) Vagus n.
XI (11) accessory n.
Identify 1 and 2
- Hypoglossal canal
- Tympanooccipital fissure
Identify the process
Tentorial process
what is the difference between a fissure and a foramen
fissure= between 2 bones
foramen= hole in one bone
What does Hypoglossal mean
Hypo= under
glossal= tongue
What is the purpose of the Tentorial process? What animals have this?
serves as a “tent” to cover the cerebellum
very big in carnivores
Identify the structure the arrow is pointing to?
what structure in the star on?
red arrow= Tentorial process
star= cerebellum
what bone corresponds with the blue (1)
what bone corresponds with the green (2)
- Interparietal bone
- Occipital bone
Identify the parts of the temporal bone
1.Squamous part
2. Petrosal part
3. Tympanic part
Identify 1 and 2 of the temporal bone
1.Zygomatic process
2. Mandibular fossa
Identify the part of the temporal bone
Petrosal part
Identify 1-3
- Jugular foramen
- Internal acoustic meatus
- Canal for trigeminal nerve
what CN pass through this foramen
CN IX(9)
CN X(10)
CN XI (11)
what CN pass through this structure
structre: Internal acoustic meatus
Facial n. (CN VII) (7)
Vestibulocochlear n. (CN VIII)(8)
what nerve passes through this structure
structure:
Canal for trigeminal nerve
CN V (5)
Identify 1 and 2
- Mastoides process
- Stylomastoid foramen
what nerve passes through the Stylomastoid foramen
Facial n. CN VII (7)
common exam question
Identify 1-3 of the tympanic part of the temporal bone
- external acoustic meatus
2.Tympanic bulla - Retroarticular foramen