VanCleave's Science Fun

Your Guide to Science Projects, Fun Experiments, and Science Research

  • Home
  • ASK JANICE
  • Teacher Guide
  • Homeschool Science For Kids
Home » Digestion:Chewing

Digestion:Chewing

By Janice VanCleave

Why is it important to thoroughly chew food?

Digestion is the process of breaking the food you eat into small enough pieces to be used by your body. This process starts in your mouth.

First, knife-like teeth in the front of your mouth, called incisors, cut and slice a small piece from the food. The child in the photo is using her incisors to bite off a small piece from the apple.

Biting with your incisors is much like cutting paper into pieces by the sharp edges of scissors.

You also use the sharp pointed teeth on the side of the incisors. These teeth are called canines and are used when foods like meat need to be torn into pieces.Yep! Dogs (canines) also have teeth that are pointed because they too need to tear off pieces from some food, such as meat.

Once the food is inside the mouth, grinding teeth on each side of your mouth, called molars mash and crush the food.

During this smashing process saliva (spit) produced in the mouth is mixed with the food. When you swallow, your tongue automatically pushes the gooey mush toward your throat. In the process a ball of food called a bolus is formed. The bolus enters the alimentary canal, which is what the tube-like digestive system is called.

If you do not chew your food well, large chunks are swallowed and your stomach tries but it cannot squeeze hard enough to break the food apart.  Unchewed food can pass through your digestive system basically unchanged. This means that your body was not able to absorb needed nutrients from the food. (Nutrients are materials that your body needs to grow, produce energy, and maintain good health.)

Food and Nutrition for Every Kid

(Paid Link)

Share this:

  • Click to email a link to a friend (Opens in new window) Email
  • Click to share on X (Opens in new window) X
  • Click to share on Facebook (Opens in new window) Facebook
  • Click to print (Opens in new window) Print

Filed Under: Biology Tagged With: canine teeth, chewing, digestion, human, insicisor teeth

Topic Search

Visitors From All Over the World


Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

Copyright © 2025 · Janice Van Cleave · JVC's Science Fair Projects · Log in