BIO 202L - Digestive system Exam 2026
Questions and Answers
explain the flow of food through the digestive system - Answer -passes through the
pharynx, esophagus, stomach, small intestine, and large intestine
contrast between chemical and mechanical digestion - Answer -mechanical
digestion: chewing
chemical digestion: using enzymes and chemicals to break down food
esophagus - Answer -stratified squamous epithelium
esophageal/stomach junction - Answer -stratified squamous on esophageal and
gastric pits on stomach side
stomach (microscopic level) - Answer -mucus cells and gastric pits
gastric pits - Answer -the ducts that go down
G gells (microscopic level) - Answer -secrete gastrin, stimulates the production of
HCl from the parietal cells, which then the parietal cells secrete the HCl
parietal cells - Answer -secrete HCl and intrinsic factor
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, Chief cells - Answer -secrete pepsinogen (inactive proenzyme) the pepsinogen will
be converted to pepsin and then starts the protein digestion (need HCl)
small intestine villi - Answer -
duodenum (microscopic level) - Answer -has brunner's glands in submucosa
jejunum (microscopic level) (has pronounced villi) - Answer -no brunner's glands
or peyer's patches
illeum (microscopic level) - Answer -peyer's patches - lymphoid
colon (microscopic level) - Answer -goblet cells and no pits
liver - Answer -portal triad
portal triad - Answer -portal vein, hepatic artery, bile duct
ureter - Answer -transitional epithelium lining the lumen
kidney - Answer -glomerulus and bowman's capsule
kidney renal - Answer -corpusle and tubules
pancreas - Answer -islets of langerhans and exocrine acini
tongue - Answer -moves food around, for saliva to come in contact
parotid salivary gland - Answer -produces saliva, yellow brown on outside
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Questions and Answers
explain the flow of food through the digestive system - Answer -passes through the
pharynx, esophagus, stomach, small intestine, and large intestine
contrast between chemical and mechanical digestion - Answer -mechanical
digestion: chewing
chemical digestion: using enzymes and chemicals to break down food
esophagus - Answer -stratified squamous epithelium
esophageal/stomach junction - Answer -stratified squamous on esophageal and
gastric pits on stomach side
stomach (microscopic level) - Answer -mucus cells and gastric pits
gastric pits - Answer -the ducts that go down
G gells (microscopic level) - Answer -secrete gastrin, stimulates the production of
HCl from the parietal cells, which then the parietal cells secrete the HCl
parietal cells - Answer -secrete HCl and intrinsic factor
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Chief cells - Answer -secrete pepsinogen (inactive proenzyme) the pepsinogen will
be converted to pepsin and then starts the protein digestion (need HCl)
small intestine villi - Answer -
duodenum (microscopic level) - Answer -has brunner's glands in submucosa
jejunum (microscopic level) (has pronounced villi) - Answer -no brunner's glands
or peyer's patches
illeum (microscopic level) - Answer -peyer's patches - lymphoid
colon (microscopic level) - Answer -goblet cells and no pits
liver - Answer -portal triad
portal triad - Answer -portal vein, hepatic artery, bile duct
ureter - Answer -transitional epithelium lining the lumen
kidney - Answer -glomerulus and bowman's capsule
kidney renal - Answer -corpusle and tubules
pancreas - Answer -islets of langerhans and exocrine acini
tongue - Answer -moves food around, for saliva to come in contact
parotid salivary gland - Answer -produces saliva, yellow brown on outside
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
