ANS Week 3
Card Set Information
ANS Week 3
Week 3 Exam 1
3 Secretory Glands of Saliva
Parotids, Sublinguals, Submandibulars
A function of saliva: _______ and ______ of swallowing
Lubrication and facilitation
Function of Saliva: Initiation of __________ digestion (but ______ in pigs)
Function of Saliva: Provide a fluid environment for ___________ digestion and neutralize large amounts of acid produced in the _________ (Ruminants)
Primary function of an Esophagus
swallowing a food bolus
How is food pushed down the esophagus?
What is an Esophagus?
a muscular tube connecting the mouth to the stomach
3 Parts of an Esophagus
Upper Esophageal Sphincter, Esophageal Body, Lower Esophageal Sphincter
What is UES
Upper Esophageal Sphincter
What is LES
Lower esophageal sphincter
Primary peristalsis is initiated by
Secondary peristalsis happens if
primary contraction fails to empty the esophagus, or when gastric contents are refluxed
What is the most important function of the stomach?
The storage of food and the controlled release of its contents into the duodenum
3 zones of the stomach
fundus, corpus, antrum
What is the fundus involved in?
The reception and storage of contents
What does the corpus do?
serves as a mixing vat of the saliva, gastric juice, and food
What does the antrum serve as, and what does it regulate?
the gastric pump, and regulates the propulsion of food past the pyloric sphincter into the duodenum
What is the mixing of feed called?
What in the stomach helps with the enzymatic digestion?
What secretes the acid in the stomach?
What secretes pepsinogen?
Chief or peptic cells
What do chief or peptic cells secrete
5 stimulus of gastric acid secretion
Smell/taste/thought of food, Gastrin, Acetylcholine, Histamine, Food particles
Inhibitors of Gastric Acid Secretion (5)
Acid, Antihistamine, Somatostatin, Cholecystockinin (CCK), food particles- fat
Which side is the ruminant stomach located on?
The ruminant stomach provides a site for ____ ______
the four distinct compartments of the ruminant stomach
Reticulum, Rumen, Omasum, Abomasuum (the real stomach)
Functions of the Ruminant stomach: ______ digestion and ______ _____ _____ production
cellulose, volatile fatty acid
3 kinds of volatile fatty acids
Acetate, propionate, butyrate
Functions of the Ruminant stomach: Regurgitation of ______ ______ for remastication
Functions of the Ruminant stomach: Orderly delivery of ingesta into the _______ and ________
omasum and abomasum
Functions of the Ruminant stomach: Eructation of gas produced by the __________ ________
Ruminants digest cellulose so they can get ________
Digesting cellulose allows ruminants
to consume low quality, fibrous feeds