Mouth and Esophagus Flashcards
Serous secretion
contains enzymes and water
Mucus secretion
contain water, electrolytes and mucin
how are water and salt secreted into lumen of salivary gland
Ach binds to muscarinin receptors, cause an influx of Ca++, secretion of Cl- into lumen through cl- channels and Na_ and water follow
function of IgA, lysozyme, lactoferrin
antimicrobial to help maintain oral hygiene
function of lingual lipas
fat digestion
only plays a minimal role in the mouth
function of mucus
lubrication, protection
function of water
taste, swallowing, speech
function of Na+, K+, Cl- bicarb
alkalization
bicarb neutralizes gastric acid
what is the primary stimulus that incrases salivary secretion
Ach
what happens when Ach binds to muscarinic receptors
increases Ca++ pathways which incrase salivary secretion
Where is striated muscle located
upper 1/3 of esophagus, oral cavity and upper esophageal spincter
where is smooth muscle located
lower 2/3rd of esophagus
what is GERD
reflux of gastric ontents into esophagus
what does GERD cause
inflammation of mucosal surface of esophagus which can lead to barrett’s esophagus and cancer
What is dysphagia
difficulty swallowing
