BIO 256 EXAM SCRIPT 3 2026 QUESTIONS
AND VERIFIED SOLUTIONS
⩥ mechanical digestion occurs where. Answer: grinding of teeth and
churning of stomach and small intestine
⩥ chemical digestion occurs where. Answer: digestive enzymes
produced by salivary glands, stomach, pancreas, and small intestine
⩥ most absorption occurs where. Answer: small intestine
⩥ small mucosal projections that increase surface area for absorption.
Answer: villi
⩥ permanent transverse folds in the intestinal lining. Answer: circular
folds
⩥ four layers of the digestive tract. Answer: mucosa, submucosa,
muscularis externa, serosa
(from inner to outer)
⩥ the submucosal plexus is located ____. Answer: in the submucosa
layer
, ⩥ the myenteric plexus is located between two layers of the. Answer:
muscularis externa
⩥ function of submucosal plexus. Answer: control glandular secretions
of mucosa and movement of muscularis mucosae
⩥ function of myenteric plexus. Answer: controls peristalsis and other
contractions of muscularis externa
⩥ what are the three salivary glands. Answer: parotid, submandibular,
sublingual
⩥ function of saliva. Answer: begins starch and fat digestion, inhibits
bacterial growth, binds food together to form bolus, dissolves molecules
to stimulate taste buds
⩥ two enzymes in the saliva. Answer: salivary amylase and lingual
lipase
⩥ salivary amylase function. Answer: begins starch digestion and breaks
down polysaccharides
AND VERIFIED SOLUTIONS
⩥ mechanical digestion occurs where. Answer: grinding of teeth and
churning of stomach and small intestine
⩥ chemical digestion occurs where. Answer: digestive enzymes
produced by salivary glands, stomach, pancreas, and small intestine
⩥ most absorption occurs where. Answer: small intestine
⩥ small mucosal projections that increase surface area for absorption.
Answer: villi
⩥ permanent transverse folds in the intestinal lining. Answer: circular
folds
⩥ four layers of the digestive tract. Answer: mucosa, submucosa,
muscularis externa, serosa
(from inner to outer)
⩥ the submucosal plexus is located ____. Answer: in the submucosa
layer
, ⩥ the myenteric plexus is located between two layers of the. Answer:
muscularis externa
⩥ function of submucosal plexus. Answer: control glandular secretions
of mucosa and movement of muscularis mucosae
⩥ function of myenteric plexus. Answer: controls peristalsis and other
contractions of muscularis externa
⩥ what are the three salivary glands. Answer: parotid, submandibular,
sublingual
⩥ function of saliva. Answer: begins starch and fat digestion, inhibits
bacterial growth, binds food together to form bolus, dissolves molecules
to stimulate taste buds
⩥ two enzymes in the saliva. Answer: salivary amylase and lingual
lipase
⩥ salivary amylase function. Answer: begins starch digestion and breaks
down polysaccharides
