HIST: Taste + Olfaction

Question 1

What type of epithelium lines the respiratory tract?

Answer 1

Pseudostratified columnar ciliated epithelium

Question 2

What is the hallmark for olfactory mucosa?

Answer 2

Dramatically thicker + LACKS goblet cells

Question 3

What types of cells are in olfactory mucosa?

Answer 3

Basal cells –> stem cells

Brush cells –> ciliated

Supporting cells

Question 4

What dense CT supports mucosa in the oral cavity?

Answer 4

Lamina propria

• papillary layer (superficial + loose)
• dense layer (deep)

Question 5

What are the divisions for oral mucosa?

Answer 5

1. Lining
2. Masticatory
3. Specialized mucosa

Question 6

In the oral cavity, what is masticatory mucosa (hard palate) classified as?

Answer 6

Keratinized or parakeratinized stratified squamous epithelium

Question 7

Where is the lining mucosa found and what is it classified as?

Answer 7

Lining = lips, cheeks, tongue, soft palate

Nonkeratinized stratified squamous epithelium/parakeritinized

Question 8

What are the 3 layers of the lining mucosa in the oral cavity?

Answer 8

1. Stratum basale
2. Stratum spinosum
3. Stratum Superficiale

Question 9

What is the specialized mucosa of the oral cavity found on? What does it contain?

Answer 9

The dorsal surface tongue, associated w/ taste

Contains taste buds

Question 10

What type of epithelia is found on the tongue?

Answer 10

Masticatory + Specialized mucosa

Question 11

The lingual papilla are associated with?

Answer 11

Taste buds

Question 12

What are these + function?

Answer 12

Filiform Papillae

Help move food towards the pharynx when swallowing

Question 13

What are these + function?

Answer 13

Foliate Papillae

Provide taste sensation

Question 14

What are these?

Answer 14

Fungiform Papillae

Question 15

What are these?

Answer 15

Circumvallate papillae

Question 16

What are these?

Answer 16

Lingual papilae

Question 17

Taste bud has what cells?

Answer 17

Neuroepithelial (sensory) cells connected to taste pore

Supporting cells

Basal cells

Question 18

What part of the tongue senses bitter?

Answer 18

Posterior

Question 19

What part of the taste bud senses sour (acidic)?

Answer 19

Lateral

Question 20

What part of the taste bud senses sweet (sugars)?

Answer 20

Tip of tongue

Question 21

What part of the tongue senses salty (sodium)?

Answer 21

Anterior + lateral to the tip

Question 22

Answer 22

Question 23

What is dentin composed of?

Answer 23

Calcium hydroxyapatite crystals

dentin = in tubules

Question 24

What is enamel composed of?

Answer 24

Calcium hydroxyapatite rods (prisms) that are connected via interprismatic material

Question 25

Enamel, dentin, and cememntum are all composed of what?

Answer 25

Calcium hydroxyapatite

Question 26

what cell is found in dentin?

Answer 26

Odontoblasts

Question 27

What cell is found in enamel?

Answer 27

Ameloblasts

Question 28

What cell is found in cementum?

Answer 28

Cementoblasts

Question 29

Cementum, Periodontal ligament, alveolar bone, and gingiva form?

Answer 29

Periodontium

Question 30

What ligament lines the alveolus?

Answer 30

Periodontal L.