Skeleton of the Head

Question 1

What are the functions of the skeleton of the head?

Answer 1

• protection of the brain and special organs
• allowing the passage of nerves, blood vessels, and lymphatics
• providing areas for attatchment of muscles
• framework for face
• supporting the entrance of the respiratory and digestive systems

Question 2

How many bones are in the skeleton of the skull

Answer 2

22

Question 3

What are the two sets of bones of the skeleton of the head

Answer 3

Cranial: form the cranial cavity enclosing the brain
Facial:form the skeleton of the face

Question 4

How many bones make up the cranial bones? What are they?

Answer 4

8: frontal, parietal, temporal, occipital, sphenoid, ethmoid

Question 5

What does the frontal bone form?

Answer 5

forehead, roof of orbits, most of the anterior part of the floor of the cranial cavity

Question 6

What do the parietal bones form?

Answer 6

form the greater portion of the sides and roof of the cranial cavity?

Question 7

What is the inner surface of the parietal bones marked with?

Answer 7

protrusions and depressions to accommodate blood vessels and the outer covering of the brain

Question 8

What does the temporal bones form?

Answer 8

the inferior lateral aspects of the skull

Question 9

What does the occipital bone form?

Answer 9

posterior part of the skull

Question 10

What are the special features of the occipital bone?

Answer 10

contains the foramen magnum

joints with the VC with skull forming the atlanto-occipital joint via occipital condyles

Question 11

What forms the jugular foramen?

Answer 11

both the occipital and temporal bones

Question 12

What cranial bone articulates with all other cranial bones?

Answer 12

sphenoid

Question 13

What cranial bone resembles a butterfly with stretched wings

Answer 13

sphenoid

Question 14

Where does the sphenoid bone lie?

Answer 14

posterior and superior to the nasal cavity

Question 15

What does the sphenoid bone form?

Answer 15

part of the orbit and the floor of the cranial cavity

Question 16

What cranial bone is sponge-like in appearance

Answer 16

ethmoid

Question 17

Where is the ethmoid bone located

Answer 17

in the anterior of the floor of the cranial fossa

Question 18

What does the ethmoid bone form

Answer 18

part of the nasal septum and superior side of the walls of the nasal cavities

Question 19

How many bones are facial bones?

Answer 19

14

Question 20

What are the facial bones? (include if they’re paired or single)

Answer 20

Nasal (2)
Lacrimal (2)
Palatine (2)
Inferior nasal concha (2) 
Vomer (1)
Maxillae (2)
Zygomatic (2)
Mandible (1)

Question 21

Where is the lacrimal bone located

Answer 21

close to medial part of the orbit

Question 22

What connects the orbit with the nasal cavity

Answer 22

lacrimal canal of the lacrimal bone

Question 23

What are the palatine bones shaped like

Answer 23

L shaped

Question 24

Where are the palatine bones located

Answer 24

part of the posterior part of the hard palate

Question 25

What are the inferior nasal concha bones?

Answer 25

lower most projection into nasal cavity, separate from ethmoid

Question 26

What is the strongest bone in the facial skeleton

Answer 26

zygomatic

Question 27

What bones from the cheekbones?

Answer 27

zygomatic

Question 28

What bones form the zygomatic arch?

Answer 28

temporal and zygomatic

Question 29

What does the vomer form

Answer 29

inferior portion of the bony nasal septum

Question 30

What bone articulates with all of the bones of the facial skeleton except the mandible

Answer 30

maxillae

Question 31

What does the maxillae form?

Answer 31

part of the orbits, lateral walls and floor of the nasal cavity and hard palate

Question 32

What bone contains the largest of paranasal sinuses ?

Answer 32

maxillae

Question 33

What does the maxillae contain

Answer 33

largest of paranasal sinuses, infraorbital foramen, upper teeth, maxillary sinuses

Question 34

What is the largest facial bone

Answer 34

mandible

Question 35

What is the only moveable bone in the skull

Answer 35

mandible

Question 36

What bones from the TMJ

Answer 36

temporal bone and mandible

Question 37

What is the purpose sutures

Answer 37

to hold firmly the bones of the skull together

Question 38

What type of joints are sutures

Answer 38

fibrous joints

Question 39

What are the main sutures of the skull

Answer 39

squamous, lamboid, sagittal, coronal

Question 40

What do the squamous sutures unite?

Answer 40

unites the parietal bone with temporal bone

Question 41

What do the lamboid sutures unite?

Answer 41

unites parietal bones with the occipital bone

Question 42

What do the sagittal sutures unite?

Answer 42

unites parietal bones

Question 43

What do the coronal sutures unite?

Answer 43

unites frontal bone with the two parietal bones

Question 44

What is a sinus?

Answer 44

cavity filled with air in skeleton of the head

Question 45

What are paranasal sinuses?

Answer 45

cavities around the nasal cavity within bones of the skull that are lined with extensions of the nasal mucous membrane

Question 46

Where do the paranasal sinuses open to?

Answer 46

all open into the nasal cavity

Question 47

What are the paranasal sinuses?

Answer 47

frontal, maxillary, sphenoidal, ethmoidal

Question 48

What is the purpose of the paranasal sinuses?

Answer 48

- lighten the weight of the skull reducing muscle effort to keep it erect against gravity - contribute to the preparation of air for lungs by warming, cleaning, and moisturizing inhaled air - serve as resonating chambers for the sounds we speak/sing

Question 49

What is the purpose of fontanelles?

Answer 49

as spacers for growth of skull and providing flexibility to the fetal skull during delivery

Question 50

What are the 6 fontanelles?

Answer 50

anterior posterior anterolateral posterolatersal

Question 51

what bone does not articulate with any other bone

Answer 51

hyoid

Question 52

Where is the hyoid bone located?

Answer 52

anterior of the neck

Question 53

How is it possible that the hyoid bone does not articulate with any other bone?

Answer 53

suspended by ligaments and muscles

Question 54

What is the purpose of the hyoid bone

Answer 54

supports the tongue and provides attachment for muscle of the neck and pharynx

Question 55

What are the synovial joints of the skull

Answer 55

only one: TMJ

Question 56

What type of joint in the TMJ

Answer 56

combined hinge and plannar

Question 57

What are the articulating surfaces of the TMJ

Answer 57

- condylar process of the mandible - mandibular fossa of the temporal bone - articular tubercle of the temporal bone

Question 58

What are the movements of the TMJd

Answer 58

``` depression elevation protraction retraction lateral movement ```

Question 59

What could pain disorders of the TMJ be due to?

Answer 59

genetics arthritis jaw injury