Oral, Salivary, Teeth, Esophagus Flashcards
(17 cards)
Which epithelium are in the oral cavity?
stratified squamous (keratinized in many spots)
Structures within the oral cavity
tongue and teeth
Function of the tongue
- manipulates food into a ball for swallowing
- glands within secretes lingual lipase
- papillae contain taste buds for gustation
Function of the uvula
helps retain food in the mouth while chewing
Function of the palatine tonsil
protects from infections
Function of the salivary glands
- moisten and cleanse the mouth
- inhibit bacterial growth
- dissolve molecules so they can stimulate taste buds
- breakdown of food to aid in swallowing
Function of the teeth
chewing food
4 types of teeth
- incisors
- canines
- premolars
- molars
Where are the 4 types of teeth found?
from midline to the rear jaw:
- incisors: two most anterior
- canine: pointed tooth lateral to the incisors
- premolars: two teeth lateral to the canines
- moalrs: three teeth most posterior
What are deciduous teeth?
baby teeth
What are permanent teeth?
adult teeth
3 major salivary glands and their locations
- parotid: beneath skin anterior to the earlobes
- submandibular: halfway along the mandible
- sublingual: floor of the mouth
What do salivary glands produce
saliva
What is saliva made of?
- 97-99.5% water
- mucus
- electrolytes
- lysozome
- immunoglobulin A
- salivary amylase
- lingual lipase
What is mastication and why is it useful?
- process of chewing
- breaks down food into smaller pieces
3 sections of the pharynx and the epithelium found in each
Histology of the esophagus
mucosa: nonkeratinized stratified squamous epithelium
submucosa: contains esophageal glands
muscularis externa: skeletal muscle tissue in upper 1/3, skeletal and smooth muscle in middle 1/3, smooth muscle in lower 1/3
adventitia: connective tissue
