Topic 15: Animal Nutrition and Digestive System Flashcards
Carbs convert to ______
monosaccharides
Proteins convert to ______
amino acids
Lipids convert to ______
fatty acids and glycerol
fatty acids and glycerol are _____ energy sources and _____ building blocks
(major energy source)
major building block
amino acids are _____ energy sources and _____ building block
(minor energy source)
major building block
monosaccharides are _____ energy sources
(major energy source)
Intracelluar digestion has _____ digestive cavity
cells _______ food in sponges
No digestive cavity
cells take in and break down their own food (sponges)
Break down carbs
Amylases
Break down proteins
Acid digestion and proteases
Break down lipids
Emulsification by bile and lipases
organ with upper skeletal muscle, lower smooth muscle
Esophagus
Location of one sphincter in early digestive process
between esophagus and stomach
main function is acid digestion of proteins
Stomach
secrete HCl
parietal cells
secrete pepsinogen
chief cells
What cells are located in mucosa of stomach?
Parietal and chief cells
Pepsinogen function and source
Chief cells secrete pepsinogen which are activated to become pepsin and hydrolyze proteins
controls movement of chime from stomach to small intestine
Pyloric sphincter
mixture of gastric juice and food
chyme
main function is terminal digestion and absorption
Small intestine
3 parts of small intestine
duodenum, jejunum, then ileum
active digestion occurs at this part (in small intestine)
Duodenum
food absorption into bloodstream at this part (small intestine)
Jejunum and ileum
consists of bicarbonate, amylases, proteases, and lipases
Pancreatic juice
emulsifies fat
comes from the liver and may be stored in gall bladder
Bile
cytoplasmic projections of villi
Microvilli
responsible for final disaccharide digestion
Brush border enzymes
_____ and _____ pass into blood capillaries with active transport
Monosaccharides and amino acids
Monosaccharides and amino acids pass into ___________ with ____________
blood capillaries with active transport
Food in bloodstream is first taken to ________
liver