Rice University
Biology for AP® Courses
An eight-unit electronic textbook provides a guide to AP® Biology. Each of the 28 chapters include an introduction, multiple lessons, a summary, review questions, and test prep questions. Teachers see how each lesson connects to a big...
OpenStax
Open Stax: Anatomy & Physiology: Overview of the Digestive System
Students learn about the structure and function of the human digestive system, the accessory digestive organs, the tissue layers of the alimentary canal, the contributions of the enteric and autonomic nervous systems to digestive system...
CK-12 Foundation
Ck 12: Life Science: 11.16 Digestive System
Understand the chemical and mechanical functions of the human digestive system.
CK-12 Foundation
Ck 12: Life Science: 11.17 Digestive System Organs
Learn the structure and function of the human digestive system organs.
CK-12 Foundation
Ck 12: Life Science: 11.18 Digestive System Enzymes
Learn how the enzymes in the digestive system help with the digestive process in the human body.
CK-12 Foundation
Ck 12: Life Science: 11.20 Digestive System Health
Understand digestive health of the human body.
Biology Pages
Kimball's Biology Pages: The Human Gastrointestinal (Gi) Tract
This site provides an in-depth look at the human gastrointestinal tract.
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