Digestion

Digestive Organs

100

This muscular tube carries food from your mouth to your stomach.

esophagus

200

This organ stores bile produced by the liver.

gallbladder

300

This organ absorbs most nutrients from digested food and contains tiny structures called villi.

small intestine

400

This organ absorbs water and helps form waste before it leaves the body.

large intestine

500

This flap of tissue prevents food from entering the windpipe when you swallow.

epiglottis

Digestion & Food

100

Chewing food is an example of this type of digestion.

mechanical digestion

200

This type of digestion uses chemicals and enzymes to break food down.

chemical digestion

300

This thick liquid is produced when partially digested food mixes with gastric juice in the stomach.

chyme

400

These substances help speed up chemical reactions involved in digestion.

enzymes

500

Name both major processes involved in digestion.

mechanical digestion and chemical digestion

Dental Health

100

This is the sticky, bacteria-filled film that develops on your teeth.

plaque

200

This is the hardest material in the human body and protects the outside of your teeth.

enamel

300

This is the part of the tooth that can be seen above the gum line.

crown

400

This is hardened plaque that can irritate the gums.

calculus (tartar)

500

This advanced stage of gum disease can damage the tissues and structures supporting the teeth

periodontitis

Digestion Vocab

100

This is the solid waste that remains after the digestive system has removed usable nutrients and water.

feces

200

This wavelike muscular movement pushes food through the digestive tract.

peristalsis

300

These tiny, fingerlike structures increase the surface area of the small intestine and help absorb nutrients.

villi

400

This is an open sore that can develop in the lining of the stomach or small intestine.

ulcer

500

Put these in the correct order: stomach → mouth → small intestine → esophagus.

mouth → esophagus → stomach → small intestine

Health & Application

100

A student brushes their teeth twice a day. This is one way to help maintain healthy teeth and gums. Name one other habit they should practice.

flossing daily

200

Someone has red, swollen, irritated gums. This condition is most likely called this.

gingivitis

300

A student hasn't brushed their teeth regularly and develops persistent bad breath. What is the medical term for bad breath?

halitosis

400

A student eats a sandwich. Explain what happens to the food from the mouth → stomach → small intestine → large intestine.

• Mouth: Food is chewed and mixed with saliva.
• Stomach: Food mixes with gastric juices and becomes chyme.
• Small intestine: Digestion continues and nutrients are absorbed through the villi.
• Large intestine: Water is absorbed and waste is formed. 

500

A person eats a meal containing carbohydrates, proteins, and fats. Explain how mechanical and chemical digestion work together to break down the food and allow nutrients to be absorbed.

Mechanical digestion physically breaks food into smaller pieces, beginning with chewing. Chemical digestion uses substances such as enzymes and stomach acid to break food molecules down further. The small intestine completes much of the chemical digestion and absorbs nutrients through the villi.