BIO 256 Exam 1 Review Questions and
Answers
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
Answers
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
