Introductory Anatomy: Digestive System
Introductory Anatomy: Digestive System Dr D.R.Johnson, Centre for Human Biology Purpose The digestive system prepares food for use by hundreds of millions of body cells. Food when eaten cannot reach cells (because it cannot pass through the intestinal walls to the bloodstream and, if it could would not be in a useful chemical state. The gut modifies food physically and chemically and disposes of ...
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