Digestive system - mouth, Biology

MOUTH -

  1. It is as transverse slit. It is pseudo type i.e. not open directly into alimentary canal.
  2. Mouth is covered by upper & lower movable lips. Movement is due to arbicularis auris muscles.
  3. On the inner side of lip, labial glands present, their secretion keeps buccal cavity moist.
  4. Outer part of lip is of skin and inner part is of mucous membrane.
  5. Mouth leads into vestibule. In rabbit upper lip is hare lip.
Posted Date: 10/1/2012 7:02:34 AM | Location : United States







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