Skull and Cranial Nerves I

Question 1

What is the neurocranium?

Answer 1

Braincase

Question 2

What is the function of the neurocranium?

Answer 2

Protect the brain

Question 3

What is the facial skeleton called?

Answer 3

Splanchnocranium

Question 4

What is the function of the splanchnocranium?

Answer 4

Face, sensory components, and masticatory apparatus

Question 5

What are the three dorsal bones of the neurocranium?

Answer 5

Frontal, parietal, and the interparietal portion of the occipital

Question 6

What is different about the frontal and parietal bone?

Answer 6

Both are bilaterally symmetrical

Question 7

What is the function of the temporal fossa/line?

Answer 7

Contains the temporal muscle and fascia

Question 8

What are the four ventral bones of the brain case?

Answer 8

Presphenoid, pterygoid, basisphenoid, and occipital

Question 9

What canal is within the occipital bone?

Answer 9

Hypoglossal canal

Question 10

What canals are within the sphenoid bone?

Answer 10

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

Question 11

What are pterygoid processes?

Answer 11

Ventral projections of sphenoid

Question 12

What fossa are located within the temporal bone?

Answer 12

Mandibular fossa and stylomastoid foramen

Question 13

What six bones line the brain cavity?

Answer 13

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

Question 14

What are the three types of skull fractures?

Answer 14

Depressed - Linear - Comminuted

Question 15

What is a depressed skull fracture?

Answer 15

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

Question 16

What is a linear fracture?

Answer 16

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

Question 17

What is a comminuted fracture?

Answer 17

Bone is broken into several pieces

Question 18

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

Answer 18

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

Question 19

What is the hard palate made up of?

Answer 19

Premaxilla, maxilla, palatine

Question 20

What is within the nasal choane?

Answer 20

Nasal conchae

Question 21

What are nasal conchae?

Answer 21

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

Question 22

What makes up the bony orbit?

Answer 22

Zygomatic, lacrimal, frontal, maxilla, and palatine

Question 23

What is the floor of the orbit formed by?

Answer 23

Processes of zygomatic, maxilla, and palatine

Question 24

What is the zygomatic arch?

Answer 24

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

Question 25

What muscle’s origin is the zygomatic arch?

Answer 25

Masseter muscle (ventral edge of the zygomatic arch)

Question 26

What does the mandible articulate with?

Answer 26

Temporal, at the temporomandibular joint

Question 27

What is within the mandible?

Answer 27

Lower dental battery

Question 28

What foramen are within the mandible?

Answer 28

Mental foramina and mandibular foramen

Question 29

What does CN I exit out of?

Answer 29

Cribiform plate

Question 30

What does CN V1 exit out of?

Answer 30

Maxillary foramen

Question 31

What does CN II exit out of?

Answer 31

Optic canal

Question 32

What does CN XII exit out of?

Answer 32

Hypoglossal canal

Question 33

What does CN IX, X, and XI exit out of?

Answer 33

Jugular foramen

Question 34

What does CN VII and VIII exit out of?

Answer 34

Internal acoustic meatus

Question 35

What does CN III, IV, and VI exit out of?

Answer 35

Orbital fissure

Question 36

What does CN V2 exit out of?

Answer 36

Round foramen

Question 37

What does CN V3 exit out of?

Answer 37

Oval foramen