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31 Cards in this Set

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chemical digestion
process by which large food molecules are broken down into smaller food molecules
mechanical digestion
process by which large pieces of food are cut and crushed into smaller pieces
Digestion
process by which food is changed into forms the body can use
mouth
food enters the body through the mouth
teeth
enables you to bite and chew your food
saliva
liquid in the mouth that helps in digestion
bolus
a ball of food after you chew it up
pharynx
throat which breaks into two parts
epiglottis
flap of tissue that prevents food from entering the windpipe
trachea
your wind pipe that leads to your lungs
esophagus
tube the connects the mouth to the stomach
peristalsis
wavelike movement that moves food through the digestive tract
rugae
the contracting and expanding of the stomach to mechanically digest food
chyme
thick liquid form of food
gastric juices
juice produced in the stomach that contains mucus, pepsin and hydrochloric acid
pepsin
enzyme that digests proteins
hydrochloric acid
a strong acid that partly makes up the gastric juice in the stomach
small intestine
organ in the digestive system where most digestion takes place
bile
green liquid that breaks down fats and oils
emulsification
process of breaking down large droplets of fat into small droplets of fat
lipase
enzyme that digests fats and oils
digestive juices and enzymes
chemicals that control chemical reactions in the body.
villi
fingerlike projection on the lining of the small intestine
absorption
movement of food from the digestive system to the blood
large intestine
colon, part of the digestive tract
rectum
end of the large intestine which stores waste
anus
end of the rectum which eliminates waste
pancreas
large gland that lies below the stomach
liver
largest organ in the body which produces bile
gall bladder
a small sac under the liver which stores bile
stomach
J-shaped, baglike organ that stores food.