Digestive System Review

Fill in the blank

100

The digestive system ________ the food we eat so we can absorb nutrients. 

breaks down 

200

Digestion begins in your ______.

mouth

300

In your mouth, ____ makes food wet and soft and secretes enzymes which begin the process of breaking down food. 

saliva

400

After you swallow, your food passes down to your ______, which connects the bottom of your throat to your stomach. 

esophagus

500

The ______ intestine is a long, narrow tube that has spongy walls which absorb nutrients after food is broken down. 

small intestine

Fill in the blank 2

100

Once the enzymes in the small intestine have finished breaking down food, the leftovers get pushed to the _____ where they will the remaining liquid will be absorbed by the body. 

large intestine

200

From the large intestine, food that cannot be digested leaves the body through the ____.

anus

300

Liquid waste is removed by the body in the form of _____. 

urine

400

Food moves from your mouth, down your throat, to your esophagus and then to your ______, which mixes the food together with gastric juices to help break down the food. 

stomach

500

_____, which is made of protein, lines the walls of your stomach to help protect it from the gastric juices.

Mucus

Enzymes

100

What is an enzyme?

An enzyme is a protein which acts as a catalyst to help speed up reactions in your body. 

200

Chewing is an example of _______ digestion, while the enzymes in your saliva are an example of _____ digestion. 

Chewing- mechanical digestion

enzymes in saliva- chemical digestion

300

Amylase breaks down_________.

Complex Carbohydrates

400

Lipase breaks down ________.

fats

500

Lactase breaks down_______

Dairy products

Know your digestive system!

100

What is peristalsis?

Peristalsis is the wave-like contractions of muscles which move food down the esophagus

200

Villi are located in the ______ intestine and help your body to absorb nutrients. 

small intestine

300

This organ absorbs excess water from undigested food prior to its release from the body as a solid waste.

large intestine

400

What order does food pass through your body?

mouth, esophagus, stomach, small intestine, large intestine

500

What does the liver do?

This organ produces bile and detoxifies a variety of substances.

Homeostasis

100

How does the digestive system work with the excretory system to sustain homeostasis?

The digestive system collects and removes undigested solids, the excretory system filters waste in your blood blood and they are removed as urine.

200

How does the digestive system work the circulatory system?

The digestive system works very closely with the circulatory system to get the absorbed nutrients distributed through your body by the blood.

300

How does the digestive system work the respiratory system?

The respiratory system removes the carbon dioxide, which is one of the waste products produced by cells as they break down glucose and turn it into energy. 

400

Explain how homeostasis works with another system. 

500

Name and explain a disease of the digestive system.