Skull and Cranial Nerves I Flashcards

1
Q

What is the neurocranium?

A

Braincase

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2
Q

What is the function of the neurocranium?

A

Protect the brain

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3
Q

What is the facial skeleton called?

A

Splanchnocranium

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4
Q

What is the function of the splanchnocranium?

A

Face, sensory components, and masticatory apparatus

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5
Q

What are the three dorsal bones of the neurocranium?

A

Frontal, parietal, and the interparietal portion of the occipital

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6
Q

What is different about the frontal and parietal bone?

A

Both are bilaterally symmetrical

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7
Q

What is the function of the temporal fossa/line?

A

Contains the temporal muscle and fascia

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8
Q

What are the four ventral bones of the brain case?

A

Presphenoid, pterygoid, basisphenoid, and occipital

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9
Q

What canal is within the occipital bone?

A

Hypoglossal canal

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10
Q

What canals are within the sphenoid bone?

A

Optic canal, Foramen rotundum, Foramen ovale, and Hypophyseal fossa

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11
Q

What are pterygoid processes?

A

Ventral projections of sphenoid

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12
Q

What fossa are located within the temporal bone?

A

Mandibular fossa and stylomastoid foramen

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13
Q

What six bones line the brain cavity?

A

Occipital, parietal, frontal, petrous temporal, basisphenoidm and presphenoid

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14
Q

What are the three types of skull fractures?

A

Depressed - Linear - Comminuted

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15
Q

What is a depressed skull fracture?

A

Fragment of bone is depressed inward to compress or injure the brain

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16
Q

What is a linear fracture?

A

Usually occur at the point of impact, with fracture lines radiating away in two or more directions

17
Q

What is a comminuted fracture?

A

Bone is broken into several pieces

18
Q

What is the rostrum portion of the skull made up of?

A

Premaxilla, maxilla, palatine, nasal, lacrimal, and portions of the frontals and zygomatics

19
Q

What is the hard palate made up of?

A

Premaxilla, maxilla, palatine

20
Q

What is within the nasal choane?

A

Nasal conchae

21
Q

What are nasal conchae?

A

Thin, scroll-like bones that are covered with repiratory and nasal epithelia

22
Q

What makes up the bony orbit?

A

Zygomatic, lacrimal, frontal, maxilla, and palatine

23
Q

What is the floor of the orbit formed by?

A

Processes of zygomatic, maxilla, and palatine

24
Q

What is the zygomatic arch?

A

Formed via the temporal process of the zygomatic bone and the zygomatic process of the temporal bone

25
What muscle's origin is the zygomatic arch?
Masseter muscle (ventral edge of the zygomatic arch)
26
What does the mandible articulate with?
Temporal, at the temporomandibular joint
27
What is within the mandible?
Lower dental battery
28
What foramen are within the mandible?
Mental foramina and mandibular foramen
29
What does CN I exit out of?
Cribiform plate
30
What does CN V1 exit out of?
Maxillary foramen
31
What does CN II exit out of?
Optic canal
32
What does CN XII exit out of?
Hypoglossal canal
33
What does CN IX, X, and XI exit out of?
Jugular foramen
34
What does CN VII and VIII exit out of?
Internal acoustic meatus
35
What does CN III, IV, and VI exit out of?
Orbital fissure
36
What does CN V2 exit out of?
Round foramen
37
What does CN V3 exit out of?
Oval foramen