Error message

  • User warning: The following module is missing from the file system: addthis. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: addthis_displays. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: chitika_ads. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).
  • User warning: The following theme is missing from the file system: global. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: mobilizer. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).
  • User warning: The following module is missing from the file system: global. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /home/jkheakmr/public_html/english/includes/bootstrap.inc).

The structure of alimentary canal

The structure of alimentary canal


The basic structure of the walls of different parts of the alimentary canal is similar even the digestive system has different parts. Normally, the wall of alimentary canal is made up of following four layers from inside to outside respectively-