25 terms

"Middle School Digestive and Excretory System"

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Terms in this set (...)

Mouth
Mechanically and chemically breaks down food. Where digestion begins
Excretory system
A biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.
Kidneys
A pair of bean-shaped structures that are responsible for filtering the filtrate and returning most of the solutes and water to the blood.
Urinary Bladder
The organ that stores urine until it is released.
Urine
Toxic substance that was stored in urinary bladder before released out of the body.
Nephron
small tube that filters the blood while in the kidney
Ureter
Tube that carries urine from the kidney to the urinary bladder
Urethra
carries urine out of the body
digestive system
the body system that breaks down food
liver
secretes bile
gallbladder
where bile is stored
pancreas
secretes and stores digestive enzymes
tongue
Muscle in your mouth used for pushing food around
stomach
after food is swallowed, food is mixed with acid here
rectum
where waste is stored before leaving the body
excrete
to get rid of as waste
small intestine
long tube attached to stomach where nutrients in food are absorbed
pharynx
a "gate" that sends air into your lungs and food into your stomach
esophagus
tube connecting mouth to the stomach
large intestine
tube after the small intestine where liquid is absorbed
saliva
slippery liquid that makes food easy to swallow and starts to break food down
digestion
breaking down food
absorption
soaking up nutrients
Mechanical digestion
Chew, tear, grind, mash, mix and churn a material into smaller pieces, but the material remains the same
Chemical digestion
Enzymes digest a material, and turn it into a different material

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