Cranial and Facial Bones

Question 1

Cranial Bones

Answer 1

8 bones ( 2 paired and 4 single) and 4 main sutures

Question 2

Name the 8 cranial bones

Answer 2

• 2 paired: Parietal and Temporal

- 4 single : frontal, occipital, ethmoid, and sphenoid

Question 3

Name the 4 main sutures

Answer 3

Coronal, sagittal, lamdoid, and squamous

Question 4

Facial Bones

Answer 4

14 bones (6 paired and 2 single)

Question 5

Name the 14 facial bones

Answer 5

• 6 paired: Maxllae, zygomatic, lacrimal, nasal, inferior nasal concha, and palatine
• 2 single: mandible and vomer

Question 6

Parietal Bones

Answer 6

2 bones, superior lateral walls of cranial cavity

Question 7

Temporal Bones

Answer 7

2 bones, inferior lateral walls of cranial cavity and houses organs of inner ear

Question 8

What are the features of the temporal bone

Answer 8

External auditory meatus, zygomatic process, styloid process, mastoid process, and mandibular fossa OF THE TEMPORAL BONE

Question 9

Frontal Bone

Answer 9

1 bone, Anterior portion of cranial cavity

Question 10

What are the features of the frontal bone

Answer 10

Supraorbital foramen OF THE FRONTAL BONE

Question 11

Occipital Bone

Answer 11

1 bone - posterior wall of the cranial cavity

Question 12

What are the features of the occipital bone

Answer 12

Foramen magnum, external occipital protuberance and occipital condyles OF THE OCCIPITAL BONE

Question 13

Ethmoid Bone

Answer 13

1 bone - floor and anterior wall of cranial cavity

Question 14

What are the features of the ethmoid bone

Answer 14

Crista galli, cribriform plate, olfactory foramen, superior nasal concha, middle nasal concha and the perpendicular plate OF THE ETHMOID BONE

Question 15

Sphenoid Bone

Answer 15

1 sphenoid bone - serves to untie the cranial and facial bones, acting as a keystone to strengthen the lateral walls of the cranium

Question 16

What are the features of the sphenoid bone

Answer 16

Sella turcica, lesser wings, greater wings and optic foramen OF THE SPHENOID

Question 17

4 Types of Sutures

Answer 17

1. Sagittal
2. Coronal
3. Squamous
4. Lambdoid

Question 18

Where is the sagittal suture?

Answer 18

In between the two parietal bones

Question 19

Where is the coronal suture?

Answer 19

In between the two parietal bones and the frontal bone

Question 20

Where are the squamous sutures?

Answer 20

In between the parietal bone and the temporal bone

Question 21

Where is the lambdoid suture?

Answer 21

In between the two parietal and the occipital bone

Question 22

Maxilla

Answer 22

• 2 maxilla : the upper jaw bone

Each maxilla has alveoli for articulation with the teeth. The maxillae also form the inferior and medial portions of the eye orbit, and part of the bony roof of the mouth

Question 23

What are the features of the maxilla?

Answer 23

Alveoli and the palatine processes OF THE MAXILLA

Question 24

Mandible

Answer 24

• 1 mandible - the lower jaw bone that articulates with the temporal bone, forming the only moveable joint of the skull
• the mandible also has alveoli for articulation with the teeth

Question 25

What are the features of the mandible

Answer 25

Body, ramus, (mandibular) condyle process, coronoid process, mental foramina and alveoli OF THE MANDIBLE

Question 26

Zygomatic Bone

Answer 26

• 2 zygomatic bones form the cheekbones and the lateral portions of the eye orbits

Question 27

What are the features of the zygomatic bones

Answer 27

The temporal process of zygomatic bone

Question 28

Lacrimal Bones

Answer 28

• 2 bones - together with the maxillae, the lacrimal bones contribute to the medial portion of each eye orbit

Question 29

Nasal bones

Answer 29

• 2 nasal bones - nasal bones form the superior portion of the bridge of the nose

Question 30

Facial Bones in the nose

Answer 30

• 1 vomer

- 2 inferior nasal conchae

Question 31

Vomer

Answer 31

forms the inferior portion of the nasal septum

Question 32

Inferior nasal conchae

Answer 32

Lie inside of the nasal cavity and serve to increase the turbulence of air flowing through in route to the lungs

Question 33

Palantine Bones

Answer 33

• 2 palatine bones -L shaped bones that form with the maxillae, part of the bony roof of the mouth and a small portion of the eye orbit

Question 34

What bones make up the eye orbit?

Answer 34

Made up of 7 bones

Palentine, Sphenoid, Zygomatic, Maxilla, Frontal, Lacrimal, Ethmoid

“people say zoro makes fencing look easy”

Question 35

Where are the ossicles found?

Answer 35

In the middle of the ear

Question 36

What makes up the ossicles

Answer 36

1. Malleus
2. Incus
3. Stapes

Question 37

Hyoid Bone

Answer 37

• Not part of the axial skeleton
• U shaped
• no articulations with any other bones