BIOS256 Exam
BIO 256 EXAM 1 REVIEW QUIZZES AND
ANSWERS GRADED A
function of digestive system - processes food, extracts nutrients and eliminates residue
the physical breakdown of food into smaller parts - mechanical digestion
A series of hydrolysis reactions that break dietary macromolecules into their monomers -
chemical digestion
6 accessory organs - teeth, tongue, salivary glands, liver, gallbladder, pancreas
what makes up the gi tract - stomach and intestines
mechanical digestion occurs where - grinding of teeth and churning of stomach and small
intestine
chemical digestion occurs where - digestive enzymes produced by salivary glands,
stomach, pancreas, and small intestine
most absorption occurs where - small intestine
small mucosal projections that increase surface area for absorption - villi
permanent transverse folds in the intestinal lining - circular folds
BIOS256 Exam
, BIOS256 Exam
four layers of the digestive tract - mucosa, submucosa, muscularis externa, serosa
(from inner to outer)
the submucosal plexus is located ____ - in the submucosa layer
the myenteric plexus is located between two layers of the - muscularis externa
function of submucosal plexus - control glandular secretions of mucosa and movement of
muscularis mucosae
function of myenteric plexus - controls peristalsis and other contractions of muscularis
externa
what are the three salivary glands - parotid, submandibular, sublingual
function of saliva - 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 - salivary amylase and lingual lipase
salivary amylase function - begins starch digestion and breaks down polysaccharides
lingual lipase function - activated by stomach acid and digests fat after food is swallowed
and breaks down triglycerides
what is deglutination - swallowing
BIOS256 Exam
BIO 256 EXAM 1 REVIEW QUIZZES AND
ANSWERS GRADED A
function of digestive system - processes food, extracts nutrients and eliminates residue
the physical breakdown of food into smaller parts - mechanical digestion
A series of hydrolysis reactions that break dietary macromolecules into their monomers -
chemical digestion
6 accessory organs - teeth, tongue, salivary glands, liver, gallbladder, pancreas
what makes up the gi tract - stomach and intestines
mechanical digestion occurs where - grinding of teeth and churning of stomach and small
intestine
chemical digestion occurs where - digestive enzymes produced by salivary glands,
stomach, pancreas, and small intestine
most absorption occurs where - small intestine
small mucosal projections that increase surface area for absorption - villi
permanent transverse folds in the intestinal lining - circular folds
BIOS256 Exam
, BIOS256 Exam
four layers of the digestive tract - mucosa, submucosa, muscularis externa, serosa
(from inner to outer)
the submucosal plexus is located ____ - in the submucosa layer
the myenteric plexus is located between two layers of the - muscularis externa
function of submucosal plexus - control glandular secretions of mucosa and movement of
muscularis mucosae
function of myenteric plexus - controls peristalsis and other contractions of muscularis
externa
what are the three salivary glands - parotid, submandibular, sublingual
function of saliva - 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 - salivary amylase and lingual lipase
salivary amylase function - begins starch digestion and breaks down polysaccharides
lingual lipase function - activated by stomach acid and digests fat after food is swallowed
and breaks down triglycerides
what is deglutination - swallowing
BIOS256 Exam
