Nasal Cavity 1

Question 1

Nose is part of the _____ system. It is composed of external nose and nasal cavity, which is divided into right and left halves by _____.

Answer 1

Respiratory; nasal septum

Question 2

Functions of nose includes:
• Olfaction
• Respiration
• Filtration of dust
• Humidification of inspired air
• Reception and elimination of secretions from \_\_\_\_\_ sinuses and \_\_\_\_\_ ducts

Answer 2

Paranasal; Nasolacrimal

Question 3

What makes up the septum? Be specific (3)

Answer 3

Vomer, perpendicular plate of the ethmoid, and septal cartilage.

Question 4

Nasal cavity lies beneath the _____ cranial fossa.

Answer 4

Anterior

Question 5

Nostrils is external (anterior) nares- open into the _____.

Answer 5

Nasopharynx

Question 6

______ is internal (posterior) nares–open into the nasopharynx

Answer 6

Choanae

Question 7

_____ _____ extends from the roof to the floor; has both bony and cartilaginous portions

Answer 7

Nasal septum

Question 8

(T/F) Nasal cavity usually deviates to one side of the midline.

Answer 8

True

Question 9

_____ project from lateral walls of the nasal cavity.

Answer 9

Conchae (turbinates)

Question 10

How many parts can the nasal cavity be divided into? What are they?

Answer 10

3 parts:

• Vestibule part
• Respiratory region
• Olfactory region

Question 11

Which part of the nasal cavity:
• Lies within the flared portion of the nose
• Contains hair follicles

Answer 11

Vestibule part

Question 12

Which part of the nasal cavity:
• Largest part of the nasal cavity
• Contains the conchae

Answer 12

Respiratory region

Question 13

Which part of the nasal cavity:
• Superior-most aspect of the nasal cavity
• Contains olfactory epithelium

Answer 13

Olfactory region

Question 14

Respiratory regions are made up of what type of epithelium?

Answer 14

Pseudostratified ciliated columnar

Question 15

Nasal vestibules are made up of what type of epithelium?

Answer 15

Stratified squamous

Question 16

Olfactory region contains what type of epithelium?

Answer 16

Olfactory epithelium

Question 17

Vestibule is lined by the skin with short thick hairs, known as?

Answer 17

Vibrassae

Question 18

_____ is the lining of the sphenoethmoidal recess in the apex of nasal cavity

Answer 18

Olfactory mucosa

Question 19

_____ covers the rest of the nasal cavity –ciliated epithelium with numerous mucus-secreting glands

Answer 19

Nasal mucosa

Question 20

Mucosa covering the _____ and ______ traps small dust particles and moistens the inspired air

Answer 20

middle and inferior conchae

Question 21

Mucus is swept backward by _____ into the _____ and is swallowed

Answer 21

cilia; nasopharynx

Question 22

_____ are affected by low temperatures: cease to beat at about 10C → nose “runs” in cold weather

Answer 22

Cilia

Question 23

Upper respiratory tract infections and cigarette smoke also inhibit _____ action

Answer 23

ciliary

Question 24

What are the floor of the nasal cavity? (2)

Answer 24

1. Maxilla

2. Palatine -horizontal

Question 25

What are the roof of the nasal cavity? (5)

Answer 25

1. Lateral cartilages 2. Nasal bones 3. Frontal bone - very small region 4. Ethmoid bone - cribriform plate 5. Sphenoid bone – body

Question 26

_____ is a scroll-like projections into nasal cavity from the lateral walls

Answer 26

CONCHAE (TURBINATES)

Question 27

What are the 3 conchae (turbinates)?

Answer 27

* Superior nasal concha * Middle nasal conchae * Inferior nasal concha is a separate bone

Question 28

What is the function of chonchae (turbinates)?

Answer 28

Increase surface area –moistening and warming up of the inhaled air

Question 29

What divide the nasal cavity into recesses or meatuses?

Answer 29

Conchae (Turbinates)

Question 30

What are the 4 recess or meatus?

Answer 30

- Sphenoethmoidal recess - Superior meatus - Middle meaturs - Inferior meatus

Question 31

Drainage: What receives opening of the sphenoid paranasal sinus posteriorly?

Answer 31

Sphenoethmoidal Recess | Drainage 1-1-4-1

Question 32

Drainage: What receives several ducts from the posterior ethmoid air cells

Answer 32

Superior Nasal Meatus

Question 33

Middle nasal meatus is between _____ and _____ nasal conchae.

Answer 33

Middle and inferior nasal conchae

Question 34

Ethmoid bulla and semilunar hiatus in contained within which meatus?

Answer 34

Middle nasal meatus

Question 35

Ethmoid bulla is in the medial wall of _____ meatus.

Answer 35

Middle nasal meatus

Question 36

Ethmoid bulla receives drainage from?

Answer 36

Middle ethmoid air cells

Question 37

Semilunar hiatus is a Slit-like groove _____ to and below the ethmoid bulla.

Answer 37

anterior

Question 38

Semilunar hiatus Receives infundibulum of the frontal sinus _____

Answer 38

anterosuperiorly

Question 39

Frontonasal of the semilunar hiatus will receive numerous ducts from the _____.

Answer 39

anterior ethmoid air cells

Question 40

Frontonasal of the semilunar hiatus Receives opening of the _____ sinus posteroinferiorly

Answer 40

maxillary

Question 41

Inferior Nasal Meatus Receives the _____ duct anteriorly

Answer 41

nasolacrimal duct (Tear drainage)

Question 42

Frontal sinus is innervated by?

Answer 42

supraorbital nerves (V1)

Question 43

Frontal sinus opens into the anterior part of the ______ in the middle meatus

Answer 43

semilunar hiatus

Question 44

______ are small invaginations of the mucous membrane of the middle and superior nasal meatus into the ethmoid bone.

Answer 44

Ethmoid air cells

Question 45

Ethmoid air cells create the _____ sinus.

Answer 45

Ethmoid

Question 46

Which set of air cells drain into the middle nasal meatus through the ethmoid infundibulum, hiatus semilunaris?

Answer 46

Anterior

Question 47

Which set of air cells open directly into the middle meatus (bullar cells) at the ethmoid bulla, a swelling on the superior border of the semilunar hiatus?

Answer 47

Middle

Question 48

Which set of air cells open directly into the superior meatus?

Answer 48

Posterior

Question 49

Ethmoid air cells are innervated by?

Answer 49

anterior & posterior branches | of the Nasociliary Nerve (V1)

Question 50

The ______ are located in the body of the sphenoid (and in some instances may extend into the wings)

Answer 50

sphenoid sinuses

Question 51

What is the innervation of sphenoid sinus?

Answer 51

branches of nasociliary n.(V1)

Question 52

There is a thin plate that separates sphenoid sinus from what 5 important structures?

Answer 52

``` – Optic nerve – Optic chiasm – Pituitary gland – Internal carotid arteries – Cavernous sinus ```

Question 53

What is the largest of the paranasal sinuses, pyramidal in shape?

Answer 53

Maxillary sinus

Question 54

Each Maxillary sinus drains by one or two openings referred to as ______ that empty into the middle meatus by way of the _____ _____.

Answer 54

maxillary ostia ; hiatus semilunaris

Question 55

Maxillary Sinus drains (up/downwards)?

Answer 55

Upward

Question 56

Maxillary sinus is innervated by?

Answer 56

anterior, middle, and | superior alveolar nerves (V2)

Question 57

How does the nasal cavity communicate with the orbit?

Answer 57

via the nasolacrimal duct

Question 58

How does the nasal cavity communicate with the nasopharynx?

Answer 58

via the choanae

Question 59

How does the nasal cavity communicate with the paranasal sinuses?

Answer 59

via openings into meatus

Question 60

How does the nasal cavity communicate with the anterior cranial fossa?

Answer 60

via foramina in the cribriform plate and the foramen cecum

Question 61

How does the nasal cavity communicate with the pterygoalatine fossa?

Answer 61

via sphenopalatine foramen

Question 62

How does the nasal cavity communicate with the oral cavity?

Answer 62

via incisive foramen