Large Intestine

The final chapter in the journey of food through our digestive system: how bacteria transforms undigested matter into waste. Biology - Human Body - Learning Points. The large intestine is around 1.5m long and 6-7cm wide. The large intestine is home to trillions of 'good' bacteria that feed on the undigested food, or roughage, that enters it. As bacteria in the gut combine with undigested food mucus is added to create faeces. The faeces are then released into the rectum and eventually the anus, where it will be passed. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.