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Digestive Tract Essentials
Structures
Alimentary canal and glands/organs
  • Alimentary canal
– Runs from the mouth to the anus. – We can imagine the alimentary canal as a donut hole within a giant donut.
  • Accessory glands/organs
– Secrete digestive juices into the alimentary canal – To imagine the accessory glands, we draw a donut and show jelly ooze into the donut hole to represent the accessory gland secretions.
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Digestive Tract Essentials

Digestive Tract Essentials
  • Alimentary canal runs from the mouth to the anus.
    • Accessory glands secrete digestive juices into the alimentary canal.
  • Peristalsis is rhythmic contractions of smooth muscle
  • Peristaltic contractions push food down the alimentary canal.
  • Sphincters regulate movement through the alimentary canal. There smooth muscle contracts and relaxes.

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