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Check What You Know #1 Word Power #1 Word Power #2 Check What You Know #2 Investigation Review
100
What organ works in the liver, is shaped like a pear, and contains a word part that names another organ?
Gallbladder
100
What system moves air in and out of the human body?
Respiratory
100
What is the long, coiled organ where most digestion takes place?
Small Intestine
100
When you exhale, you release_____.
Carbon Dioxide
100
What increases to meet your body's increased need for oxygen when you exercise?
Breathing Rate
200
What maneuver moves food stuck in the throat?
Heimlich
200
What types of chemicals help break down food?
Enzymes
200
What is a watery liquid that moistens the mouth and food?
Saliva
200
The teeth used mainly for grinding are ______.
Molars
200
In what part of the lungs does gas exchange occur?
Air Sacs
300
What organ is very different in length than its name suggest?
Small Intestine
300
What is the scientific term for the windpipe?
Trachea
300
What is the air passage connecting the throat to the lungs?
Trachea
300
A tough, but bendable, body material is ______.
Cartilage
300
What kind of air contains more carbon dioxide than oxygen?
Exhaled Air
400
What comes in four types and grows in two sets in one lifetime?
Teeth
400
What helps you produce speech sounds?
Larynx
400
What is the muscular tube that connects the mouth to the stomach?
Esophagus
400
WHen you inhale, the diaphragm moves ______.
Down
400
Names the four types of teeth.
Incisors, Canine, premolars, and molars.
500
What substance lines your throat and helps the food slide down?
Mucus
500
What are the thin-walled chambers in the lungs through which oxygen moves into the blood?
Air Sacs
500
What is the looplike structures through which dissolved nutrients pass into the blood?
Villi
500
What tighten and get shorter when you inhale, but relax and get longer when you exhale?
Rib Muscles
500
What happens in the digestive system?
Food is broken down into a form that body cells can use.




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