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Digestion

QuestionAnswer
Digestion The process by which the body breaks down food into small nutrient molecules.
Esophagus A muscular tube that connects the mouth to the stomach.
Peristalsis Involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system.
Absorption The process by which nutrient molecules pass through the wall of the digestive system into the blood.
Physical Digestion Food is physically broken down into smaller pieces
Chemical Digestion Food is chemically broken down into nutrients that can be absorbed into the bloodstream.
Churns The stomach ___________ and squeezes the food.
Mouth Food enters the body. Teeth start to break down food mechanically and saliva starts to break it down chemically.
Stomach This bag of muscle stores and breaks down food chemically and physically.
Small Intestine This long tube is 22 feet long! Most chemical digestion and absorption happens here.
Liver where bile is produced
Large Intestine Where water is absorbed into the bloodstream.
Rectum/Anus Solid waste exits the body here.
What part of the body stores bile? gallbladder
Where does the digestion of starch begin? mouth
What enzyme is responsible for the digestion of starch? To absorb water
What is the purpose of the large intestine? Mechanical Digestion
Name one organ that has both chemical and physical digestion. mouth
What are enzymes? Proteins that speed up chemical reactions
What is the process called that changes foods into usable body nutrients? digestion
What absorbs nutrients in the small intestine? villi
What type of digestion occurs in the stomach? Mechanical and chemical
Where does food go after it leaves the stomach? Small Intestine
In which organ does most of the chemical digestion take place? Small Intestine
Where does digestion begin? mouth
Explain how physical digestion occurs in the mouth Teeth grind and physically break down food.
Explain how chemical digestion occurs in the mouth. Amylase in saliva helps break down starches.
Where does the waste exit from the body? Anus
Why is a mucus layer necessary to line the stomach? To protect the stomach from acid.
Created by: jfcason