Deep face I

Question 1

Features that make up the bony part of the nose

Answer 1

Nasal bones
Frontal process of maxilla
Nasal part of frontal bone and nasal spine
Bony part of nasal septum

Question 2

Cartilagenous part of nose

Answer 2

2 lateral cartilages
2 alar cartilages
Septal cartilage (nasal septum)

Question 3

All of the nasal cavity is lined with nasal mucosa except _____

Answer 3

vestibule of nose (considered an external portion)

Question 4

Nasal mucosa is firmly connected to the ____ of the bony parts of the nasal cavity and the ____ of the cartilagenous nasal components

Answer 4

periosteum

perichondrium

Question 5

The areas lined with nasal mucosa constitute the ____ and the _____

Answer 5

respiratory area (inferior 2/3)
olfactory area (superior 1/3)

Question 6

The olfactory area has specialized nasal mucosa that contains the peripheral nerve endings from the ____ nerve for ____ ____ ____

Answer 6

olfactory nerve (CN I)
special sense olfaction (smell)

Question 7

Boundaries of the nasal cavity
Roof
Floor
Medial wall
Lateral wall

Answer 7

Roof: frontal bone, ethmoid bone, sphenoid bone
Floor: palatine process of maxilla, horizontal plate of palatine bone
Medial wall: nasal septum (perpendicular plate of ethmoid, vomer, septal cartilage, nasal crest of maxillary and palatine bones)
Lateral wall: superior, middle and inferior nasal conchae

Question 8

Nasal conchae: What are the four passages that the nasal cavity can be divided into?

Answer 8

1. Spheno-ethmoidal recess
2. superior nasal meatus
3. middle nasal meatus
4. inferior nasal meatus

Question 9

Where does the sphenoehtmoidal recess drain into?

Answer 9

opening of sphenoid sinus

Question 10

where does the superior nasal meatus drain into?

Answer 10

openings of ethmoidal sinus

Question 11

Where does the middle nasal meatus drain into?

Answer 11

opening of frontal sinus
maxillary sinus also opens into middle nasal meatus in posterior part of semilunar hiatus at the maxillary ostium (below ethmoid bulla)

Question 12

Where does the inferior nasal meatus drain into?

Answer 12

opening of nasolacrimal duct

Question 13

What is the arterial supply to the nasal cavity?

Answer 13

Most blood is supplied to lateral and medial walls of nasal cavity from branches of the maxillary artery (spenopalatine a, anterior and posterior ethmoidal a, greater palatine a)
BUT also from the facial artery (superior labial a, lateral nasal branches)

Question 14

What is the venous drainage from the nasal cavity?

Answer 14

venous drainageto spenopalatine, facial and opthalmic veins

Question 15

What is the kiesselbach area?

Answer 15

It is the region where all five arteries come together in a capillary bed that can bleed profusely

Question 16

What is the kiesselbach area?

Answer 16

It is the region where all five arteries (spenopalatine a, anterior & posterior ethmoidal a, greater palatine a, superior labial a, lateral nasal branches) come together in a capillary bed that can bleed profusely

Question 17

Innervation of the nasal cavity

Answer 17

opthalmic division of trigeminal n (CN V1) and the maxillary division of trigeminal n (CN V2)

Question 18

Nerve supply to the posterior 2/3 of the nasal cavity from ___ via the ____ and ____

Answer 18

V2 via nasopalatine n (nasal septum) and greater palatine n (lateral wall)

Question 19

Nerve supply to anteriosuperior nasal mucosa of septum & lateral wall is from ___ via the _____

Answer 19

V1 via anterior ethmoidal nerves

Question 20

1. What are paranasal sinuses?
2. Where are they found?
3. What are paranasal sinuses lined with?
4. Where do they drain into?

Answer 20

1. Air-filled extensions of the respiratory portion of nasal cavity
2. Found in frontal, ethmoid, sphenoid, & maxillary bones of face
3. Lined with nasal mucosa
4. Drain into nasal cavity via openings in the spheno-ethmoidal recess, and superior, middle & inferior meatuses

Question 21

1. Maxillary sinuses arterial supply and innervation?
2. How does it drain?
3. What makes it unique?

Answer 21

1. Arterial supply=superior alveolar branches of maxillary a,& greater palatine a; innervation=superior alveolar n branches
2. Drainage via maxillary ostium into middle meatus
3. Largest paranasal sinus

Question 22

1. Ethmoid sinus arterial supply and innervation
2. Drainage
3. Misc.

Answer 22

1. blood supply: anterior and posterior ethmoid & sphenopalatine a
   innervation: nasocilliary nerves (CN V1)
2. Drainage: ant & middle ethmoidal cells drain into middle meatus
   post ethmoidal cells drain into middle meatus
3. ethmoid air cells located between orbits

Question 23

1. Sphnoid sinus arterial supply and innervation
2. Drainage
3. Misc

Answer 23

1. posterior ethmoidal a, posterior ethmoidal n
2. Drainage via spheno-ethmoidal recess
3. unevenly divided by bony part of nasal septum

Question 24

1. Frontal sinus arterial supply and innervation
2. Drainage
3. Misc

Answer 24

1. supraorbital a & anterior ethmoidal aa; supraorbital n (V1)
2. Drains via frontonasal duct into semilunar hiatus of middle meatus
3. bw outer & inner tables of frontal bone, posterior to supercilliary arches

Question 25

1. The ear consists of external, middle and internal portions. The ___ and ____ ear transfer sound to the internal ear 2. The external ear captures and funnels acoustic signals through the ____ to the middle ear which contains a complex of small bones (ossicles) that then transmit sound vibrations to the inner ear where the organs of hearing and equilibrium are found

Answer 25

1. external and middle | 2. tympanic membrane

Question 26

The middle ear is found within the ____ part of the temporal bone IT is located behind the _____ It connects to _____ via ____ It is lined with ___ ___

Answer 26

petrous Tympanic membrane (ear drum) nasopharynx via pharyngotympanic tube (Eustachian Tube) mucous membrane

Question 27

Conents of the middle ear

Answer 27

auditory ossicles: malleus, incus, stapes stapedius and tensor tympani muscles chorda tympani n (taste to ant/. 2/3 of tongue from CN VII) tympanic plexus of nerves

Question 28

``` Boundaries (walls) of the middle ear Roof Floor Lateral Medial Anterior Posterior ```

Answer 28

Roof: tegmental wall (temporal bone=tegman tympani) Floor: jugular wall Lateral: membranous wall (tympanic membrane) Medial: Labrynthine wall (choclea, oval & round windows) Anterior: carotid wall (internal carotid a) posterior: mastoid wall (opening to mastoid antrum)

Question 29

A mobile chain of tiny bones that articulate with each other and transmit sound vibrations=?

Answer 29

Middle ear auditory ossicles

Question 30

A mobile chain of tiny bones that articulate with each other and transmit sound vibrations=?

Answer 30

Middle ear auditory ossicles

Question 31

The middle ear auditory ossicles span between the ____ to ____

Answer 31

tympanic membrane (from external ear and oval window) to the inner ear

Question 32

Flow of sound through the ear

Answer 32

tympanic membrane-->malleus-->incus-->stapes (oval window)

Question 33

What muscle moves the stapes? What inserts on malleus?

Answer 33

Stepedius moves stapes | tensor tympani inserts on malleus

Question 34

Internal ear contains the ____ organ and is buried deep within petrous part of temporal bone within otic capsule (hardest part of this bone) Innervation Three parts of the inner ear=?

Answer 34

vestibulocochlear organ (hearing and equilibrium) recieves vestibulocochlear n (CN VIII) via internal acoustic meatus Three parts=cochlea, vestibule, semicircular canals

Question 35

shell shaped part of bony labyrinth containing cochlear duct, concerned with hearing=?

Answer 35

cochlea

Question 36

small oval chamber containing urticle & saccules; vestibular labyrinth for balance=?

Answer 36

vestibule

Question 37

communicate with vestibule; also for balance=?

Answer 37

semicircular canals

Question 38

A narrow canal within the petrous part of the temporal bone that transmits the facial n (CN VII) and vestibulocochlear n (CN VIII) and blood vessels through to internal ear=?

Answer 38

Internal acoustic meatus