Oral and Nasal Cavity (complete)

Question 1

What are the parts of the lip

Answer 1

1. Vermillion Zone
2. Vermillion border
3. Lower lip
4. Upper lip
5. Tubercle
6. Labial commisure

Question 2

What is the vermillion zone

Answer 2

The whole area that the lips cover

Question 3

What is the vermillion border

Answer 3

The outline of your lips

Question 4

What is the tubercle of the lips

Answer 4

The bump right in the middle of the upper lip

Question 5

What is the labial commisure

Answer 5

the corners of your mouth

Question 6

From which arch do the mandibular and maxillary prominences come from

Answer 6

The 1st arch

Question 7

What are the steps of formation of the nose and nasal cavity

Answer 7

1. The nasal/olfactory placode forms
2. The medial and lateral nasal prominences develop around the nasal pit
3. The nasal pit invaginates further dorsally
4. The nasal prominences converge to form the nasal sac
5. The nasal sac continues to invaginate dorsally above the stomadeum
6. the oronassal membrane degrades and ruptures, the oral and nasal cavity are joined, forming the Choanae
7. The primary palate is formed
8. The nasal conchae form.

Question 8

What is the Nasal pit

Answer 8

an Ectodermal invagination

Question 9

What germ layer is the Nasal sac made from

Answer 9

Ectoderm

Question 10

What is the Choanae

Answer 10

The shared cavity between the nasal and oral cavities

Question 11

What causes the formation of the sinuses?

Answer 11

Diverticulations from the nasal cavity (Outgrowths from the nasal cavity)

Question 12

What are the four sinuses of the face

Answer 12

1. Maxillary
2. Ethmoid
3. Frontal
4. Sphenoid

Question 13

When do the sinuses completely form

Answer 13

from late pregnancy to years after birth

Question 14

What are the purposes of the sinuses

Answer 14

1. Humidify air
2. speech
3. Lightens the skull while maintaining strength

Question 15

What kind of cells make up the epithelium in the nasal cavity and sinuses

Answer 15

Pseudostratified columnar epithelium with cilia

and goblet cells

Question 16

What is the lamina propria in relation to the nasal cavity and sinuses

Answer 16

it is the layer of vascularized connective tissue just below the pseudostratified columnar epithelium.

Question 17

Why is the epithelium of the nasal cavity and sinuses pseudostratified columnar with cilia

Answer 17

1. because it can easily replace lost cells

2. because the cilia help move mucus and debris

Question 18

What do the goblet cells in the nasal cavity and sinuses do

Answer 18

they secrete mucosa

Question 19

How does the epithelium of the sinuses differ from the nasal epithelium

Answer 19

It has thinner mucosa than the nasal cavity, with fewer goblet cells

Question 20

How sensitive to infection are the nasal cavity and sinuses

Answer 20

very sensitive to infection

Question 21

What is the philtrum

Answer 21

the little indentation directly between the base of your nose and directly above the center of your lips

Question 22

what prominence of embryology gives rise to the bone underneath the philtrum

Answer 22

the frontonasal prominence

Question 23

from which arch does meckels cartilage come

Answer 23

the 1st arch

Question 24

do the two opposing sides of meckels cartilage come completely together

Answer 24

no, but close they are only separated by a symphysis

Question 25

What type of ossification does meckels cartilage assist in

Answer 25

intramembranous ossification

Question 26

How does meckels cartilage assist in intramembranous ossification

Answer 26

it signals to the cells around it to become bone

Question 27

How much of meckels cartilage is still in us

Answer 27

barely any

Question 28

Where might we find portions of meckels cartilage still

Answer 28

the bones of the ear

Question 29

What are the parts of the palate

Answer 29

1. primary palate | 2. secondary palate

Question 30

What are the other names for the primary palate

Answer 30

the premaxilla | median palatine process

Question 31

What portion of the palate does the primary palate form

Answer 31

the most anterior portion

Question 32

What forms the secondary palate

Answer 32

Swellings from the lateral maxilla that meet in the middle and fuse

Question 33

What are the swellings from the lateral maxilla that eventually fuse and for the secondary palate called

Answer 33

the palatine shelves

Question 34

in what direction does this fusion of palatine shelves to form the secondary palatine occur

Answer 34

it begins at the anterior end and fuses toward the posterior end

Question 35

Does the secondary palate include the hard and soft palate

Answer 35

yes

Question 36

what is the third outgrowth that meets up with the palatine plates that are fusing to for the secondary palate

Answer 36

the nasal septum

Question 37

from where does the nasal septum grow, and what does it eventually fuse with

Answer 37

it grows downward from the top of the nasal cavity and fuses with the secondary palate (palatine shelves)

Question 38

What are the steps of the formation of the palate

Answer 38

1. posterior growth of the primary palate 2. inferior growth of the palatine shelves and nasal septum 3. mandibular growth allows the tongue to depress enough for the palatine shelves to pass over it 4. poseterior portion of the primary palate begins to fuse with the secondary palate 5. Nasal septum and palatine plates all fuse

Question 39

Where is the incisive foramen

Answer 39

its found where the primary palate and the secondary palates converge.

Question 40

which teeth are in the primary palate

Answer 40

the maxillary incisors

Question 41

Where does the secondary palate begin and end

Answer 41

it runs from the incisive foramen to the uvula

Question 42

What are the parts of the hard palate

Answer 42

1. primary palate 2. anterior portion of the palatine shelves 3. Nasal septum

Question 43

What are the parts of the soft palate

Answer 43

posterior portion of the palatine shelves to the uvula

Question 44

Where can clefts occur in facial development

Answer 44

at any point where prominences are fusing

Question 45

what results in a cleft

Answer 45

when prominences fail to fuse

Question 46

Which clefts are the most common

Answer 46

between the mesionasal prominences

Question 47

From which two pharyngeal arches does the majority of the tongue come from

Answer 47

1st and 3rd

Question 48

What are the four initial growths that develop into the tongue

Answer 48

1 & 2. lateral lingual swellings 3. Tuberculum Impar 4. copula

Question 49

What develops into the anterior 2/3rds of the tongue

Answer 49

the lateral lingual swellings and tuberculum impar from the 1st arch

Question 50

What develops into the posterior 1/3rd of the tongue

Answer 50

the copula, mostly from the 3rd arch

Question 51

What type of muscle is the tongue

Answer 51

skeletal muscle

Question 52

From where does the muscle of the tongue come

Answer 52

Occipital somites

Question 53

What are the different types of papillae of the tongue

Answer 53

circumvallate foliate fungiform filiform