Anatomy of Facial and Sinuses

Question 1

How many facial bones are there?

Answer 1

14

Question 2

Name the facial bones:

Answer 2

R and L nasal
R and L lacrimal
R and L maxillary
R and L zygomatic
R and L palatine
R and L inferior nasal conchae
Vomer
Mandible

Question 3

Two small, thin bones
Vary in size and shape in individuals
Form superior bony wall of nasal cavity
Commonly called “bridge of nose”

Answer 3

Nasal Bones

Question 4

The two smallest bones in the skull

Answer 4

Lacrimal bones

Question 5

what does the nasal bones articulate with:

Answer 5

With each other in midsagittal plane
Superior = frontal bone
Posterosuperior = perpendicular plate of ethmoid bone
On each lateral side = maxillae

Question 6

Located in anterior part of medial wall of orbits between labyrinth of ethmoid and maxilla

Answer 6

lacrimal bones

Question 7

Each bone contains a lacrimal foramen through which the tear duct passes

Answer 7

lacrimal bones

Question 8

articulations with the lacrimal

Answer 8

Articulations :
Frontal
Ethmoid
Maxilla
Inferior nasal concha

Question 9

each articulates with all other facial bones except for mandible
-also articulates with frontal and ethmoid cranial bones

Answer 9

maxillary

Question 10

which bone does the maxillary bone not articulate with

Answer 10

mandible

Question 11

which cranial bones does the maxillary articulate with

Answer 11

frontal and ethmoid

Question 12

what forms part of lateral walls and most of floor of nasal cavity
Largest immovable bones of face
Form part of floor of orbit

Answer 12

Maxillary bones

Question 13

Form three fourths of roof of mouth

Answer 13

maxillary

Question 14

Have zygomatic process that articulate with zygoma to form part of cheek

Answer 14

maxillary

Question 15

what part of the maxillary bone is this?:
Body contains large, pyramidal cavity =

Answer 15

maxillary sinus

Question 16

what part of the maxillary bone is this?: located under each orbit for passage of infraorbital nerve and artery

Answer 16

Infraorbital foramen

Question 17

what part of the maxillary bone is this?: inferior borders of spongy bone that support roots of teeth

Answer 17

Alveolar process =

Question 18

what part of the maxillary bone is this? : forward, pointed process at their midline junction

Answer 18

Anterior nasal spine

Question 19

makes up the roof of the mouth

Answer 19

Maxillary bones

Question 20

inferior borders of spongy bone that support roots of teeth

Answer 20

Alveolar

Question 21

This bone consists of the acanthion, anterior nasal spine, alveolar process, and the infraorbital foramen

Answer 21

maxillary

Question 22

Form prominence of cheeks

Answer 22

Zygomatic Bones

Question 23

Form part of side wall and floor of orbits

Answer 23

Zygomatic Bones

Question 24

Temporal process extends posteriorly to join zygomatic process of temporal bone

Answer 24

Zygomatic Bones

Question 25

formed by union of temporal process of zygoma and zygomatic process of temporal bone

Answer 25

Zygomatic arch

Question 26

what does the zygomatic bones articulate with

Answer 26

Superior = frontal bone Lateral = zygomatic process of temporal bone Anterior = maxilla Posterior = sphenoid

Question 27

where is the nasal bone located and where is the anterior nasal spine located

Answer 27

Nasal spine- frontal bone Anterior nasal spine- facial bone

Question 28

Two L-shaped bones composed of vertical and horizontal plates

Answer 28

Palatine Bones

Question 29

Horizontal plates articulate with maxillae to complete the posterior fourth of bony palate (roof of mouth)

Answer 29

Palatine Bones

Question 30

Vertical portions extend upward between maxillae and pterygoid processes of sphenoid in posterior nasal cavity

Answer 30

Palatine Bones

Question 31

Extend diagonally and inferiorly from lateral walls of nasal cavity at its lower third

Answer 31

Inferior Nasal Conchae

Question 32

Long, narrow, very thin bones with a lateral curl Gives scroll-like appearance

Answer 32

Inferior Nasal Conchae

Question 33

Upper two nasal conchae are processes of?

Answer 33

ethmoid bone

Question 34

what makes up the nasal septum

Answer 34

vomer and perp. plate

Question 35

Thin plate of bone situated in MSP of floor of nasal cavity

Answer 35

vomer

Question 36

-articulates with ethmoid -forms inferior nasal septum

Answer 36

Vomer

Question 37

Superior border articulates with body of sphenoid bone

Answer 37

Vomer

Question 38

-Superior part of anterior border articulates with perpendicular plate of ethmoid bone -posterior border is free

Answer 38

Vomer

Question 39

what is the mental protuberance

Answer 39

the chin anterior, triangular prominence

Question 40

largest and densest bone of the face

Answer 40

Mandible

Question 41

Largest bone of the skull

Answer 41

Temporal

Question 42

What part of the mandible is this?: junction of body and ramus Also called gonion

Answer 42

Angle of the mandible

Question 43

What part of the mandible is this? two vertical portions on each side of body

Answer 43

Rami

Question 44

what part of the mandible is this ? curved horizontal portion

Answer 44

body

Question 45

what part of the mandible is this? most anterior and central part where left and right halves of mandible fuse

Answer 45

symphysis

Question 46

what part of the mandible is this? superior border of body; consists of spongy bone that supports roots of teeth

Answer 46

Alveolar process

Question 47

what part of the mandible is this? small openings on each side below the second premolar; transmit nerves and blood vessels

Answer 47

Mental foramina

Question 48

What does the mandible consist of:

Answer 48

mental foramina, alveolar process, symphysis, body, rami, angle of mandible, mental protuberance

Question 49

how many bones make up orbits

Answer 49

7

Question 50

name the orbit bones

Answer 50

Frontal Sphenoid Ethmoid Maxilla Zygoma Lacrimal Palatine

Question 51

Which facial bones form part of the hard palate

Answer 51

Mandible

Question 52

All of the following are part of the bony orbit, except: Palatine Zygoma Lacrimal Vomer

Answer 52

vomer

Question 53

Defined as the air-filled cavities located in the frontal, ethmoid, and sphenoid bones of the cranium, as well as the maxillae of the face

Answer 53

Paranasal Sinuses

Question 54

So named because of their formation from the nasal mucosa and their continued communication with the nasal fossae

Answer 54

Paranasal sinuses

Question 55

This bone does not articulate with any other bone in the body

Answer 55

Hyoid Bone

Question 56

Functions of the paranasal sinuses :

Answer 56

Serve as resonating chamber for the voice Decrease weight of skull Aid in warming and moisturizing inhaled air Act as shock absorbers in trauma Possibly control the immune system

Question 57

What sinus is the last to develop

Answer 57

Ethmoid sinuses

Question 58

which sinuses are usually the only ones developed enough to be demonstrated radiographically at birth?

Answer 58

Maxillary sinuses

Question 59

at the age of 6 and 7 what sinuses are distinguishable from ethmoids

Answer 59

frontal and sphenoid

Question 60

Paired (one in each facial bone) Vary in size and shape, but are approximately pyramidal in shape

Answer 60

maxillary sinuses

Question 61

largest and most symmetric

Answer 61

maxillary sinuses

Question 62

Second largest Paired Located between vertical plates of frontal bone Vary greatly in size and shape Occasionally absent Rarely symmetric

Answer 62

Frontal sinuses

Question 63

Normally paired Occupy body of sphenoid bone Often only one sinus develops, but never more than two Vary in size and shape Usually asymmetric Located below sella turcica and extend between dorsum and posterior ethmoids

Answer 63

Sphenoid sinuses

Question 64

Located below sella turcica and extend between dorsum and posterior ethmoids

Answer 64

sphenoid sinuses

Question 65

Located within lateral masses of labyrinths

Answer 65

ethmoid sinuses

Question 66

Composed of varying number of air cells, which are divided into three main groups Anterior (2 to 8) Middle (2 to 8) Posterior (2 to 6)

Answer 66

ethmoid sinuses

Question 67

what are the three main groups that the ethmoid sinuses are broken down into

Answer 67

anterior, middle, posterior

Question 68

Which paranasal sinuses are divided into three groups?:

Answer 68

Ethmoid

Question 69

The only facial bones that contain paranasal sinuses are the:

Answer 69

Maxillae