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Digestion vocabulary
digestion vocab...
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04/29/2004

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Term
chemical digestion
Definition
process by which large food molecules are broken into smaller food molecules
Term
mechanical digestion
Definition
process by which large pieces of food are cut and crushed into smaller pieces
Term
digestion
Definition
process of changing foods into useable forms
Term
mouth
Definition
Where the digestion begins with the teeth tearing up the food (mechanical digestion).
Term
teeth
Definition
Instruments in the mouth used to tear and grind the food in order to digest.
Term
saliva
Definition
liquid in the mouth that helps digestion
Term
bolus
Definition
ball of lubricated food
Term
Pharynx
Definition
throat
Term
Epiglottis
Definition
flap of tissue which covers the trachea (windpipe) in order for food to go down the
Term
Trachea
Definition
windpipe
Term
esophagus
Definition
tube for passage of food from pharynx to stomach
Term
peristalsis
Definition
the wavelike movement in which food is moved through the esophagus
Term
stomach
Definition
J shaped organ that stores and breaks down food, produces gastric juice.
Term
rugae
Definition
flaps of tissues in the stomach that move when the stomach moves
Term
chyme
Definition
thick liquid form of food that leaves the stomach
Term
gastric juices
Definition
juices that stomach produces: mucus, pepsin, & hydrochloric acid
Term
pepsin
Definition
enzyme that begins the digestion of proteins
Term
hydrochloric acid
Definition
strong acid, needed to make the stomach acidic
Term
SI
Definition
long coiled tube that’s 6.5 in long & 2.5 in wide, most chemical digestion happens here
Term
bile
Definition
green liquid that breaks down fats & oils
Term
emulsification
Definition
process of breaking down large droplets of fat into small droplets of fat
Term
lipase
Definition
enzyme that digests fats and oils
Term
digestive juices & enzymes
Definition
digestive juices in small intestine contain many enzymes – complete digestion
Term
villi
Definition
fingerlike projection on the lining of the small intestine
Term
absorption
Definition
movement of food from the digestive system to the blood
Term
LI-Colon
Definition
last part of the digestive system
Term
rectum
Definition
where remaining solid wastes are stored temporarily
Term
pancreas
Definition
digestive juices in small intestine contain many enzymes – complete digestion
Term
liver
Definition
largest organ in human body; produces bile
Term
gall bladder
Definition
small sac under the liver
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