Digestive System

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The human body, like the body of any living organism, is a miraculous thing. Each of its billions of cells conducts a specific function to contribute to the well-being of the whole. These cells are arranged in tissues. There are four categories of tissues: muscle, which contracts and provides motion; nerve, which transmits impulses; connective (such as bone, cartilage, blood, and fat), which supports and interconnects the structures of the body; and epithelial, which covers and protects the body and its organs. Tissues are clustered into organs, which, in turn, comprise organ systems.

The Digestive System biology study guide unit goes beyond the physical structures and functions of the organs of the digestive system. It requires an understanding of the biochemical nature of food, as it examines the series of digestive processes that occur to simplify food both physically and chemically into absorbable products. The functions of various enzymes and the relationship of hormones to healthy metabolism help complete this topic.

Digestive System is excerpted from our Biology 12 Study Guide, which is the sixth edition of a student study guide written to match the curriculum of British Columbia. The concepts presented are applicable to the biology curricula of other educational jurisdictions as well.

As with each of the biology study guide units in this series, this unit contains:

  • Biological terms linked to a Glossary where they are carefully and contextually defined
  • Biological names in the Glossary linked to a useful Taxonomic Guide
  • Diagrams that display fullscreen views when double-tapped
  • Quiz-view formats of many diagrams in the enhanced version
  • Sets of Concept Check-up questions dispersed in the unit that are linked to their answers
  • Sets of Discussion Questions dispersed in the unit designed to challenge you as you work through it
  • A concluding set of Check Your Understanding of Concepts multiple choice questions linked to their answers
  • A set of Build Your Understanding questions designed to push you beyond the limitations of this unit.

Note: Discussion Questions and Build Your Understanding questions are not linked to their answers.