GI system Flashcards
Digestion is necessary for absorption because:
Breaks down the food we eat into smallest components
Secretion is important for the function of the GI tract because
- Maintains PH
- provides an appropriate environment for the function of enzymes
- protects the lining of the tract from damage
absorption of nutrients occurs mostly in the
Small intestines
Three main components of the food we eat are:
Fats, carbs, protein
T/F
secretion of mucus in the stomach protects the cells lining the stomach from being digested
true
the gastric phase of stomach activity
activates the peristaltic mixing waves
what has a water loving (hydrophilic) head and lipid loving (hydrophobic) tail
bile salts
exercise promotes the increase in bacterial diversity of our gut microbiota
T/F
true
what digestive enzyme that is found in the stomach and begins the digestion of proteins
pepsin
the intestinal phase of the stomach activity causes the release of which hormone
small intestine hormones
what do our cells need
water, macronutrients, micronutrients
what type of digestion break food into smaller pieces
physical digestion
where does physical digestion take place
mouth: chewing
stomach: propulsion and retropusion
what are digestive enzymes
proteins that break down bonds in macromolecules into their smaller building blocks
what digestion breaks nutrients into smaller and smaller pieces
chemical digestion
