Enzymes and Digestion

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Enzymes and Digestion

Chemical Digestion  breaks down large insoluble molecules into smaller soluble ones. It's carried out by enzymes; digestive enzymes function by hydrolysis.

(http://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Digestive_system_diagram_en.svg/423px-Digestive_system_diagram_en.svg.png)

Major Parts of the Digestive System:

  • Oesophagus - carries food from the mouth to the stomach; adapted for transport rather than digestion or absorption; thick muscular wall; rings of cartilage so it doesn't collapse.
  • Stomach - muscular sac with an inner layer that produces enzymes; stores and digests food, especially proteins; glands produce enzymes to digest protein; other glands produce mucus which prevents it digesting itself.
  • Small intestine - long muscular tube; enzymes and secretions from glands further digest food; inner

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