Histology of Gustatory and Olfactory Systems

Question 1

List the 4 types of Lingual Papillae on the tongue.

Answer 1

1. Filiform
2. Fungiform
3. Foliate
4. Circumvallate

Question 2

Answer 2

Question 3

Describe the Epithelium within the Filiform Papillae.

Answer 3

Keratinized Stratified Sqamous

Question 4

Describe the Epithelium within the Fungiform Papillae.

Answer 4

Nonkeratinized Stratified Squamous with Taste buds (5) Along their APICAL surface

Question 5

Answer 5

Question 6

Describe the Epithelium within the Foliate Papillae.

Answer 6

Stratified Squamous Epithelium with Ducts of Serous Glands (Von Ebner’s Glands)

Question 7

Answer 7

“Taste Pores” are going to be the CHEMORECEPTORS that are going to be responsible for tasting the food!

Question 8

Describe the Epithelium of the Circumvallate Papillae.

Answer 8

Question 9

Answer 9

Question 10

Where are the Taste Bud found?

Answer 10

1. Lingual Papillae
2. Soft Palate
3. Posterior Pharynx
4. Epiglottis

Question 11

Describe the Taste Receptor Cells (Buds).

Answer 11

Contain 60-80 Cells

4 cell types

Replaced every 10-14 days!

Question 12

Describe the Classic Taste Sensations that are on the tongue.

Answer 12

Each Taste Bud can discern ALL five tastes but appear to concentrate on TWO of the five

*** Bitter and Sour = Taste buds on the Palate

*** ALL 5 Tastes = Posterior Pharynx and Epiglottis

Question 13

Describe the Phenomena of Smelling and Tasting.

Answer 13

Most Sensory information that is through of as TASTE is actually OLFACTORY Sensation subsernved by the Olfactory Mucosa!

Question 14

Describe the Epithelium of the Nasal Cavity.

Answer 14

Pseudostratified Columnar Epithelium with GOBLET cells

Lamina Propria: BOTH serous and mucous glands to MOISTEN inspired air and TRAP particular contaminants

• Also contains MAST cells
• Extensive Vascular Plexus (Swell or cavernous bodies)

Question 15

Describe the various FUNCTIONS of the Nasal Mucosa.

Answer 15

Question 16

Describe the Olfactory Epithelium.

Answer 16

Pseudostratified Columnar Epithelium

Question 17

List the three types of cells within the Olfactory Epithelium.

Answer 17

Question 18

Answer 18

Question 19

Describe the Olfactory Cells.

Answer 19

Question 20

Describe the Sustentacular (Support) Cells.

Answer 20

Question 21

Describe the Basilar Cells.

Answer 21

Question 22

Answer 22

Question 23

Where are the Bowman’s Glands Found?

Answer 23

LAMINA PROPRIA!

Serous exocrine glands

Question 24

Answer 24