Histology of Gustatory and Olfactory Systems Flashcards
List the 4 types of Lingual Papillae on the tongue.
- Filiform
- Fungiform
- Foliate
- Circumvallate
Describe the Epithelium within the Filiform Papillae.
Keratinized Stratified Sqamous
Describe the Epithelium within the Fungiform Papillae.
Nonkeratinized Stratified Squamous with Taste buds (5) Along their APICAL surface
Describe the Epithelium within the Foliate Papillae.
Stratified Squamous Epithelium with Ducts of Serous Glands (Von Ebner’s Glands)
“Taste Pores” are going to be the CHEMORECEPTORS that are going to be responsible for tasting the food!
Describe the Epithelium of the Circumvallate Papillae.
Where are the Taste Bud found?
- Lingual Papillae
- Soft Palate
- Posterior Pharynx
- Epiglottis
Describe the Taste Receptor Cells (Buds).
Contain 60-80 Cells
4 cell types
Replaced every 10-14 days!
Describe the Classic Taste Sensations that are on the tongue.
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
Describe the Phenomena of Smelling and Tasting.
Most Sensory information that is through of as TASTE is actually OLFACTORY Sensation subsernved by the Olfactory Mucosa!
Describe the Epithelium of the Nasal Cavity.
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)
Describe the various FUNCTIONS of the Nasal Mucosa.
Describe the Olfactory Epithelium.
Pseudostratified Columnar Epithelium
List the three types of cells within the Olfactory Epithelium.
Describe the Olfactory Cells.
Describe the Sustentacular (Support) Cells.
Describe the Basilar Cells.
Where are the Bowman’s Glands Found?
LAMINA PROPRIA!
Serous exocrine glands
