CK12 Life Science

(Marvins-Underground-K-12) #1

Further Reading / Supplemental Links


CK–12, High SchoolBiology,Chapter 38, Lesson 2.



Vocabulary


absorption Process in which substances are taken up by the blood; after food is broken
down into small nutrient molecules, the molecules are absorbed by the blood.


chemical digestion Digestion in which large food molecules are broken down into small
nutrient molecules.


constipation Having three or less bowel movements each week.


digestion Process of breaking down food into nutrients.


digestive system Body system that breaks down food, absorbs nutrients, and gets rid of
solid food waste.


duodenum The first part of the small intestine; where most chemical digestion takes place.


elimination The process in which solid food waste passes out of the body.

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