Histo of Taste and Olfaction

Question 1

What type of epithelium lines the nasal vestibule?

Answer 1

Keratinized stratified squamous epithelium

Question 2

What are the hallmarks of olfactory mucosa?

Answer 2

Dramatically thicker than respiratory epithelium (still pseudostratified ciliated columnar)

Lacks goblet cells

Question 3

What is the function of the olfactory glands?

Answer 3

Serous secretions that dissolve odorant molecules

Make up for lack of mucus from goblet cells

Question 4

What cells have specialized, nonmotile cilia with odorant receptors?

Answer 4

Olfactory receptor cells

Question 5

What layer of mucosa in the oral cavity contains the neurovasculature?

Answer 5

Papillary layer of lamina propria

Question 6

If the submucosal layer is present in the oral cavity, what does it contain?

Answer 6

Loose CT, adipose tissue, salivary glands

Question 7

What epithelium makes up the masticatory mucosa?

Answer 7

Keratinized and/or parakeratinized stratified squamous epithelium

Question 8

What kind of mucosa is found on the hard palate, gingiva, and dorsal surface of the tongue?

Answer 8

Masticatory mucosa

Question 9

What is the purpose of rete ridges and papillae in masticatory mucosa?

Answer 9

Allows mucosa to stay firmly adhered to connective tissue beneath it

Question 10

Where is lining mucosa found?

Answer 10

Lips, cheeks, alveolar mucosal surface, floor of mouth, inferior surfaces of the tongue, soft palate

Question 11

What type of oral mucosa would have a distinct submucosa?

Answer 11

Lining mucosa

Question 12

What type of epithelium makes up lining mucosa?

Answer 12

Nonkeratinized stratified squamous, may be parakeratinized in some sections

Question 13

What are the 3 layers of the epithelium of lining mucosa?

Answer 13

1. Stratum basale
2. Stratum spinosum
3. Stratum superficiale

Question 14

What sense is the oral specialized mucosa associated with?

Answer 14

Taste

Question 15

Where is the oral specialized mucosa located?

Answer 15

Dorsal surface of the tongue

Question 16

What type of oral mucosa contains papillae and taste buds?

Answer 16

Oral specialized mucosa

Question 17

What type of epithelium makes up oral specialized mucosa?

Answer 17

Keratinized epithelium

Question 18

What lingual papillae do not contain taste buds?

Answer 18

Filiform papillae

Question 19

What is the function of the filiform papillae?

Answer 19

Move food towards pharynx for swallowing

Give dorsal surface of tongue velvety texture

Question 20

What structure is this?

Answer 20

Filiform papillae

Question 21

What structure is this?

Answer 21

Foliate Papillae

Question 22

Where are foliate papillae generally found on the tongue?

Answer 22

Posterior lateral regions

Question 23

What structure is this?

Answer 23

Fungiform Papillae

Question 24

What structure is this?

Answer 24

Circumvallate Papillae

Question 25

What type of lingual papillae are few in number, located posteriorly, with hundreds of taste buds?

Answer 25

Circumvallate papillae

Question 26

Taste buds are located in what layer in structures that are not part of the tongue?

Answer 26

Mucosa (of glossopalatine arch, soft palate, posterior surface of epiglottis, posterior wall of pharynx)

Question 27

What is the role of neuroepithelial cells in the taste buds?

Answer 27

Elongated cells extending from basal lamina of epithelium to the taste pore Synapse with afferent sensory neurons of CN VII, IX, or X

Question 28

What structure is this?

Answer 28

Taste bud

Question 29

What sensations do the taste buds on the palate primarily detect?

Answer 29

Bitter and sour

Question 30

What structure attaches bone to the cementum of the tooth?

Answer 30

Periodontal Ligament

Question 31

What substance holds the enamel rods together?

Answer 31

Interprismatic material

Question 32

Where are dentinal tubules found?

Answer 32

Radiating from pulp chamber to enamel rods

Question 33

Where would Lines of Retzius be found?

Answer 33

In the enamel

Question 34

Answer 34

Question 35

What structure is this? What are the structures labelled?

Answer 35