Lecture 20: Skull and Cranial Nerves

Question 1

3 attachment sites for chewing and neck muscles + articulation with vertebral column

Answer 1

temporal fossa
temporal line
sagittal crest

Question 2

temporal fossa contains (1)

Answer 2

temporalis muscle and fascia

Question 3

what is the bump on the back of the head

Answer 3

external occipital protuberance

Question 4

external occipital protuberance is site of attachment for what ligament

Answer 4

supraspinatus

Question 5

frontal/parietal vs occipital number in neurocranium

Answer 5

2 frontal
2 parietal
1 occipital

Question 6

which 3 bones form the base of the neurocranium

Answer 6

presphneoid
basisphenoid
pterygoid

Question 7

basisphenoid looks like what animal

Answer 7

butterfly

Question 8

3 cranial fossae

Answer 8

rostral
middle
caudal

Question 9

4 bones that form hard palate

Answer 9

premaxilla
maxilla
palatine
upper portion of dental battery

Question 10

nasal conchae: definition, location

Answer 10

thin, scroll like bones that are covered with respiratory and nasal epithelia
within nasal choane/apertures

Question 11

6 bones that form rostrum (part of cranium containing teeth, palate and nasal cavity)

Answer 11

premaxilla
maxilla
palatine
nasal
lacrimal
portions of frontals and zygomatics

Question 12

zygomatic arch is formed by (2)

Answer 12

temporal process of zygomatic bone + zygomatic process of temporal bone

Question 13

origin of masseter muscle

Answer 13

zygomatic arch

Question 14

which ligament forms lateral portion of orbit

Answer 14

postorbital

Question 15

5 bones that form viscerocranium

Answer 15

zygomatic
lacrimal
frontal
maxilla
palatine

Question 16

viscerocranium definition

Answer 16

bony orbit that support eye and associated structures

Question 17

where does mandible articulate with temporal

Answer 17

temperomandibular joint

Question 18

cranial nerve that exits from telencephalon

Answer 18

olfactory/CNI

Question 19

cranial nerve that exits from diencephalon

Answer 19

optic/CN II

Question 20

2 cranial nerve that exits from mesencephalon

Answer 20

oculomotor/CN III
trochlear/CN IV

Question 21

cranial nerve that exits from metencephalon

Answer 21

trigeminal/CN V

Question 22

7 cranial nerves that exit from myelencephalon

Answer 22

CN VI/XII

Question 23

3 components of CN I/olfactory

Answer 23

olfactory filaments
olfactory bulb
olfactory tract

Question 24

fila olfactoria

Answer 24

olfactory cells

Question 25

3 components of CN II/optic

Answer 25

optic nerve
optic chiasm
optic tract

Question 26

does V3/mandibular of trigeminal provide taste to tongue

Answer 26

no, just pain/touch

Question 27

3 exits for trigeminal nerve from skull

Answer 27

orbital fissure - V1
maxillary foramen - V2
round foramen - V2
oval foramen - V3

Question 28

which cranial nerve provides motor innervation to muscles of facial expression

Answer 28

CN VII/facial

Question 29

innervation to tongue: cranial nerves and their functions

Answer 29

taste to anterior 2/3 = CN VII (FACIAL)
taste to posterior 1/3 = CN IX (glossopharyngeal)
general sensory to posterior 1/3 = CN IX
general sensory to posterior 2/3 = V3 of CN IV (trigeminal)
motor = CN XII/hypoglossal

Question 30

hard palate separates what 2 cavities

Answer 30

oral
nasal