Skull/Cranial Cavity

Question 1

What two parts is the cranium divided into?

Answer 1

• Neurocranium (bony casing of the brain)

- Visocranium (facial bones)

Question 2

What are the two subdivisions of the Neurocranium?

Answer 2

• Calvaria (superior)

- Cranial base (inferior)

Question 3

What is the name of CN I? What is its function?

Answer 3

Olfactory

-Smell

Question 4

What is the name of CN II? What is its function?

Answer 4

Optic

-Vision

Question 5

What is the name of CN III? What is its function?

Answer 5

Oculomotor

-Eye movement

Question 6

What is the name of CN IV? What is its function?

Answer 6

Trochlear

-Eye Movement

Question 7

What is the name of CN V? What is its function?

Answer 7

Trigeminal

• Mandible movement
• Face sensory

Question 8

What is the name of CN VI? What is its function?

Answer 8

Abducens

-Eye movement

Question 9

What is the name of CN VII? What is its function?

Answer 9

Facial

• face movement
• anterior 2/3 of tongue taste/sensation

Question 10

What is the name of CN VIII? What is its function?

Answer 10

Vestibulocochlear

-Hearing/balance

Question 11

What is the name of CN IX? What is its function?

Answer 11

Glossopharyngeal

• pharynx movement
• Posterior 1/3 of tongue and pharynx Taste/sensation

Question 12

What is the name of CN X? What is its function?

Answer 12

Vagus

-Motor & sensory: pharynx, larynx, esophagus, cardiac etc

Question 13

What is the name of CN XI? What is its function?

Answer 13

Accessory

-Head and shoulders movement

Question 14

What is the name of CN XII? What is its function?

Answer 14

Hypoglossal

-tongue movement

Question 15

What are the two layers of the Dura mater?

Answer 15

• periosteal

- internal meningeal

Question 16

Which cranial nerves contain presynaptic parasympathetic axons?

Answer 16

III

VII

IX

X

Question 17

Which layer of the Dura continues along the spinal cord?

Answer 17

Internal meningeal

Question 18

Describe the pathway of CN XI in the skull.

Answer 18

• enters from spinal cord via foramen magnum

- leaves skull with CN IX & X via the Jugular Foramen

Question 19

Through which dural infolding does the infundibular stalk of the hypothalamus pass?

Answer 19

Diaphragma sellae

Question 20

Is an extradural hemorrhage arterial or venous in origin?

Answer 20

Arterial

Question 21

Is a Subdural hemorrhage arterial or venous in origin?

Answer 21

venous

Question 22

Is a subarachnoid hemorrhage arterial or venous in origin?

Answer 22

Arterial

Question 23

Which nerves exit the skull through the Superior orbital fissure?

Answer 23

III

IV

V-1

VI

Question 24

Which nerves exit the skull through the foramen rotundum?

Answer 24

V2

Question 25

Which nerves exit the skull through the foramen ovale?

Answer 25

V3

Question 26

Which nerves exit the skull cavity through the internal auditory meatus?

Answer 26

VII VIII

Question 27

Which nerves exit the skull through the jugular foramen?

Answer 27

IX X XI

Question 28

What passes through the foramen spinosum?

Answer 28

Middle meningeal artery

Question 29

Through what opening does CNXII exit the cranial cavity?

Answer 29

Hypoglossal Canal

Question 30

What structure separates the occipital lobe from the cerebellum?

Answer 30

Tentorium Cerebelli

Question 31

What structure separates the cerebrum into two hemispheres?

Answer 31

Falx Cerebri

Question 32

What structure divides the cerebellum into right and left halves?

Answer 32

-Falx cerebelli

Question 33

What structure divides the hypothalamus from and the pituitary?

Answer 33

-Diaphragma sellae

Question 34

Is a subdural hemorrhage usually arterial or venous in origin?

Answer 34

-Venous

Question 35

Is an epiduralhemorrhage usually arterial or venous in origin?

Answer 35

Arterial

Question 36

Is a subarachnoidhemorrhage usually arterial or venous in origin?

Answer 36

Arterial | aneurysm