Ingestion, Digestion, Absorption
The 3 Things We Do with Food

Food is important to the body.  Therefore, the body takes care to make sure it gets as much nutrients out of food as possible, in 3 steps:
(1) Ingestion: The act of “eating” the food.  (Yum.)
(2) Digestion: The act of breaking the food down into a soft and mushy pulp.
(3) Absorption: The act of absorbing the food’s nutrients into tissues, blood, and cells.

20170511 Ingestion Digestion Absorption
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Next Generation Science Standards:

MS-LS1-3 Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.

HS-LS1-2 Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.

HS-LS1-3 Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.

What Science Does this Comic Teach?

Unit: Anatomy

⇒Chapter: Digestive System

⇒Topic: Ingestion, Digestion, and Absorption

Additional Information


The act of taking a substance into one’s self.  For example, when a paper towel “absorbs” spilled coffee from a table, the paper towel takes the spilled coffee into itself.  Our digestive system can absorb nutrients from the food when the food passes through the system.


This word describes any substances that are useful to the body.  Some examples of nutrients are: water, vitamins, minerals, sugar…etc.

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