Which of these organs is not considered an accessory digestive structure?
mouth
Which of the following organs is supported by a layer of adventitia rather than serosa?
Esophagus
Which of the following membranes covers the stomach?
Visceral peritoneum
. Which of these processes occurs in the mouth?
A.) ingestion
B.) mechanical digestion
C.)chemical digestion
D.)ALL OF THE ABOVE
Which of these processes occurs throughout most of the alimentary canal?
Propulsion
Which of the following stimuli activates sensors in the walls of digestive organs?
A.)breakdown products of digestion
B.)distension
C.)pH of chyme
D.)all of the above
Which of these statements about reflexes in the GI tract is false?
Food that distends the stomach initiates long reflexes.
Which of these ingredients in saliva is responsible for activating salivary amylase?
CHloride ions
Which of these statements about the pharynx is true?
It extends from the nasal and oral cavities superiorly to the esophagus anteriorly.
Which structure is located where the esophagus penetrates the diaphragm?
lower esophageal sphincter
Which phase of deglutition involves contraction of the longitudinal muscle layer of the muscularis?
esophegeal phase
Which of these cells secrete hormones?
Enteroendocrine cells
Where does the majority of chemical digestion in the stomach occur?
body / pylorus
. During gastric emptying, chyme is released into the duodenum through the ________.
pyloric sphincter
Parietal cells secrete
hydrochloric acid
In which part of the alimentary canal does most digestion occur?
proximal small intestine
Which of these is most associated with villi?
lacteals
What is the role of the small intestine’s MALT?
preventing bacteria from entering the bloodstream
Which part of the large intestine attaches to the appendix?
cecum
Which of these statements about bile is true?
Bile salts are recycled
Pancreatic juice_
buffers chyme
Where does the chemical digestion of starch begin?
mouth
Which of these is involved in the chemical digestion of protein?
trypsin
Where are most fat-digesting enzymes produced?
pancreas
