Facial Bones

Question 1

How many facial bones? And their names.

Answer 1

14 facial bones
-2 maxilla
-2 zygomatic
-2 nasal
-2 lacrimal
-2 palatine
-2 inferior turbinate’s (cocha)
-1 vomer
-1 mandibular

Question 2

Which bones are the largest and immovable of the face?

Answer 2

Maxillae

Question 3

Name the 4 processes of maxilla bones.

Answer 3

• frontal process
• zygomatic process
• alveolar process
• palatine process

Question 4

Nasion is where..

Answer 4

short superior border of nasal bones articulates with the frontal bone.

Question 5

Lacrimal bone and maxillae bones articulate at the _______ groove which contains the ________ sac which has fluid/tears.

Answer 5

lacrimal x 2

Question 6

Name the 3 processes of the zygoma bones (superior to inferior).

Answer 6

• frontal process
• temporal process
• maxillary process

Question 7

Name the 2 parts of palatine bones.

Answer 7

Vertical plate and horizontal plate.

Question 8

What makes up the hard palate?

Answer 8

3/4 of it is palatine process of maxilla bone.
1/4 of it is the horizontal plate of the palatine bone.

Question 9

Which are the largest nasal conchae?

Answer 9

Inferior

Question 10

Superior and medial nasal conchae are part of which bone?

Answer 10

Ethmoid

Question 11

In which slice can the inferior nasal conchae not be seen?

Answer 11

Midsagittal

Question 12

Vomer makes up..

Answer 12

bottom 1/3 of the nasal septum.

Question 13

What makes up nasal septum?

Answer 13

2/3 is perpendicular plate of ethmoid bone
1/3 is vomer bone

Question 14

In which plane is the vomer seen?

Answer 14

Midsagittal

Question 15

Which is the largest, densest bone of the face?

Answer 15

Mandible

Question 16

Which is the most inferior bone of the face?

Answer 16

Mandible

Question 17

What are the parts of the mandible?

Answer 17

• body (which contains the alveolar process)
• 2 rami

Question 18

Name the 2 processes on each ramus and what they are separated by.

Answer 18

• anteriorly: coronoid process
• posteriorly: condyloid process

Separated by mandibular notch.

Question 19

The condyloid/condylar process consists of?

Answer 19

• neck
• mandibular condyle

Question 20

What is TMJ?

Answer 20

Temporomandibular Joint

Question 21

Where is TMJ wrt EAM?

Answer 21

Anterior

Question 22

TMJ is formed by the articulation of?

Answer 22

Mandibular condyle (on the condyloid process of the mandible)

articulates with

Mandibular fossa and articular eminence of the temporal bone.

Question 23

What is the “shock absorber” of TMJ?

Answer 23

Articular disk/meniscus

(looks like bowtie)

Question 24

Some fxns of paranasal sinuses.

Answer 24

• Serve as a resonating chamber for the voice
• Decrease the weight of the skull
• Help to warm & moisten inhaled air
• Control immune system
• Act as a shock absorber in trauma

Question 25

When do paranasal sinuses form?

Answer 25

* The maxillary sinuses are usually developed enough at birth to be demonstrated on an x-ray. * The frontal and sphenoid sinuses are usually distinguishable from the ethmoid air cells by the age of 6 or 7 * The ethmoid air cells really develop during puberty * Frontal sinuses are the only ones absent at birth.

Question 26

Which are the largest paranasal sinuses and what is their shape?

Answer 26

- maxillary - triangle

Question 27

Frontal sinuses are separated by?

Answer 27

A septum.

Question 28

Ethmoid sinuses have a distinguishable feature which is..

Answer 28

Lasteral masses of the labyrinths. Divided into: anterior, middle, and posterior.

Question 29

Sphenoid sinuses are located in te body of which bone and below which structure?

Answer 29

- in sphenoid - below sella turcica