BIO 256 EXAM 1 REVIEW QUESTIONS AND ANSWERS
RATED 100% CORRECT!!
function of digestive system Answer - processes food, extracts nutrients and
eliminates residue
the physical breakdown of food into smaller parts Answer - mechanical
digestion
A series of hydrolysis reactions that break dietary macromolecules into their
monomers Answer - chemical digestion
6 accessory organs Answer - teeth, tongue, salivary glands, liver, gallbladder,
pancreas
what makes up the gi tract Answer - stomach and intestines
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
RATED 100% CORRECT!!
function of digestive system Answer - processes food, extracts nutrients and
eliminates residue
the physical breakdown of food into smaller parts Answer - mechanical
digestion
A series of hydrolysis reactions that break dietary macromolecules into their
monomers Answer - chemical digestion
6 accessory organs Answer - teeth, tongue, salivary glands, liver, gallbladder,
pancreas
what makes up the gi tract Answer - stomach and intestines
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
