Gross Anatomy - H&N

Question 1

What are the four unpaired bones of the neurocranium?

Answer 1

Ethmoid
Sphenoid
Frontal
Occipital

Question 2

Bones of the viscerocranium form by intramembranous growth EXCEPT:

Answer 2

the mandibular condyle

Question 3

What separates the middle and posterior cranial fossa?

Answer 3

Petrous temporal bone

Question 4

Middle meningeal artery is located in the ____ cranial fossa.

Answer 4

middle

Question 5

Anterior border of the middle cranial fossa:

Answer 5

greater wings of the sphenoid bone

Question 6

Carotid canal is located in the ____ cranial fossa.

Answer 6

middle

Question 7

T or F:

The inferior nasal conchae is its own bone

Answer 7

True

Question 8

The greater wing of the sphenoid contains what three foramina?

Answer 8

• Rotundum
• Ovale
• Spinosum

Question 9

Bone that attaches to falx cerebri:

Answer 9

• Ethmoid

[specifically - Crista Galli]

Question 10

Superior and middle nasal conchae are part of what bone?

Answer 10

Ethmoid

Question 11

Medial and lateral pterygoid plates are part of what bone?

Answer 11

Sphenoid

Question 12

Hamulus is located on what pterygoid plate?

Answer 12

Medial

Question 13

Tensor veli palatini hooks around the:

Answer 13

hamulus

Question 14

The orbit is made of how many bones?

Answer 14

7 [maxilla, lacrimal, ethmoid, sphenoid, frontal, palatine, zygoma]

Question 15

The ophthalmic artery is a branch of the:

Answer 15

internal carotid artery

Question 16

The superior part of the orbit is formed MOSTLY, not completely, from what bone?

Answer 16

Frontal

Question 17

The posterior part of the orbit is formed mostly, not completely, from what bone?

Answer 17

Sphenoid

[specifically - the lesser wing]

Question 18

What part of the orbit does NOT have sphenoid bone?

Answer 18

Floor of orbit

Question 19

What three bones make up the floor of the orbit?

Answer 19

• Maxilla
• Zygomatic bone
• Palatine bone [orbital process of the palatine bone]

Question 20

Lateral wall of the orbit is made of what two bones?

Answer 20

• Sphenoid bone [greater wing!]

- Zygomatic bone

Question 21

Muscle that elevates the upper eyelid:

Answer 21

Levator palpebrae superioris

Question 22

Muscle that runs through a pulley-like loop called the trochlea:

Answer 22

Superior oblique

Question 23

What are the three cranial n.n. that supply the eyeball?

Answer 23

CN3, CN4, CN6 [all enter via superior orbital fissure]

Question 24

Function of lateral rectus (1):

Answer 24

Abduct (out)

Question 25

Function of medial rectus (1):

Answer 25

Adduct (in)

Question 26

Function of superior rectus (3):

Answer 26

• Adduct
• Elevates
• Medially rotates

Question 27

Function of inferior rectus (3):

Answer 27

• Adducts
• Depresses
• Laterally rotates

Question 28

Function of superior oblique (3):

Answer 28

• Abducts
• Depresses
• Medially rotates

Question 29

Function of inferior oblique (3):

Answer 29

• Abducts
• Elevates
• Laterally rotates

Question 30

V1 and V2 are purely ____.

V3 is both ___ and ___.

Answer 30

V1, V2 = sensory

V3 = sensory, motor