The Digestive System Flashcards
the digestive system _________ food into simpler _________ that can be used by _____;
it absorbs food; ___________ waste
the entire digestive process takes between __ and __ hours
the digestive system CONVERTS food into simpler MOLECULES that can be used by CELLS;
it absorbs food; ELIMINATES waste
the entire digestive process takes between “24” and “72” hours
what are the 4 steps to the digestive system?
1) ingestion: taking in
2) digestion: breaking down
3) absorption: diffusion of nutrients into blood and tissue
4) egestion: elimination of waste
the ______:
the first stop in the ________ of your food;
___________ digestion = chewing
_____________ digestion = _________ found in saliva
the MOUTH:
the first stop in the DISASSEMBLY of your food;
MECHANICAL digestion = chewing
CHEMICAL digestion = ENZYMES found in saliva
what are the organs/components of the digestive system
mouth
pharynx (throat)
epiglottis
esophagus
liver
gallbladder
stomach
pancreas
small intestine
villi
large intestine (colon)
appendix
rectum
small flap that closed over the opening of the respiratory system when swallow, preventing food from entering airway
epiglottis
muscular tube connecting the mouth to the stomach
esophagus
what moves food to stomach when going down the esophagus
peristalsis
what does the liver produce
bile
produces bile
liver
a substance that helps break down fats
bile
stores bile produced by the liver
gallbladder
involuntary muscular churning and chemical digestion from HCl occurs
stomach
what is the acid in your stomach
HCl
secretes enzymes to help break down carbohydrates, proteins and fats
pancreas
where the majority of food digestion is completed with the help of enzymes secreted by the liver and pancreas
small intestine
what are the segments of the small intestine
duodenum
jejunum
ileum
little projections in the lining of the small intestine that function in the absorption of nutrients
villi
