Week 2 WET

Question 1

With which bone do the nasal bones articulate superiorly with at the nasion?

Answer 1

Frontal

Question 2

What bone articulates with the nasal bones laterally?

Answer 2

Frontal process of maxilla

Question 3

What forms the floor of the nasal cavity?

Answer 3

Hard palate

1) Maxilla
2) Palatine bones

Question 4

The nasal septum divides the nose into 2 halves. What 2 bones form the nasal septum?

Answer 4

Perpendicular plate of ethmoid bone

Vomer

Question 5

What structure lies anterior to these two bones to complete the nasal septum?

Answer 5

Septal cartilage

Question 6

Regarding the ethmoid bone, what passes through the cribiform plate?

Answer 6

Olfactory nerves

Question 7

What attaches to the crista gali of the ethmoid bone?

Answer 7

Falx cerebri (dura mater)

Question 8

What kind of epithelium forms the respiratory mucosa which lines most of the nasal cavity?

Answer 8

Ciliated ‘pseudostratified’ columnar epithelium with goblet cells

Question 9

Which bone forms the roof of the nasal cavity?

Answer 9

Cribiform plate of ethmoid bone

Question 10

Which cranial nerve is responsible for the sense of smell?

Answer 10

Olfactory nerve

Question 11

What do axons of the olfactory nerve pass through to reach the cranial cavity from the nasal cavity?

Answer 11

Cribiform plate

Question 12

The lateral wall of the nasal cavity has three projections called ……………….

Answer 12

Turbinates (concha)

Question 13

The superior and middle turbinates (conchae) are part of which bone?

Answer 13

Ethmoid

Question 14

The inferior conchae is its own bone.

True or False.

Answer 14

True

Question 15

What name is given to the space above the superior concha?

Answer 15

Spheno-ethmoidal recess

Question 16

What are para-nasal sinuses?

Answer 16

Air-filled spaces within some skull bones

Question 17

Name 2 functions of the para-nasal sinuses

Answer 17

Decrease weight of skull

Reservoir of warm, humid air

Humidify insipired air

Question 18

Respiratory muscosa of the nasal cavity is continous into the sinuses. What is the clinical significance of this?

Answer 18

Infection can spread from nose into the sinuses leading to sinusitis.

Question 19

What opens into the spheno-ethmoid recess?

Answer 19

Sphenoid sinus

Question 20

What opens into the superior meatus?

Answer 20

Posterior ethmoid air cells

Question 21

List 4 things that open into the middle meatus?

Answer 21

Frontal sinuses

Maxillary sinuses

Middle ethmoid air cells

Anterior ethmoid air cells

Question 22

What opens into the inferior meatus?

Answer 22

Naso-lacrimal duct

Question 23

Name the air sinus whose floor is often indented by tooth sockets?

Answer 23

Maxillary sinus

Question 24

What branch of Cr. N V innervate the frontal sinus?

Answer 24

V1 - opthalmic

Question 25

What branch of Cr. N V innervate the maxillary sinus?

Answer 25

V2- maxillary

Question 26

What branch of Cr. N V innervate the sphenoid sinus?

Answer 26

V1 + V2

Question 27

What branch of Cr. N V innervate the ethmoidal air cells?

Answer 27

V1

Question 28

State the 3 parts of the pharynx

Answer 28

Nasopharynx

Oropharynx

Hypopharynx (laryngopharynx)

Question 29

Which bones forms the roof of the nasopharynx?

Answer 29

Sphenoid

(& Basilar part of occipital)

Question 30

Name the 2 important structures present in the nasopharynx.

Answer 30

Nasopharyngeal tonsil (adenoid) aka pharyngeal

salpingopharyngeus