Human Faeces

Feces are the waste product of human digestive tract. The faecal matter is formed in the large intestine where it solidifies. The faeces contain food residue, water, bacterias, and secretions from the small intestine and the liver such as bile, etc. The food that is eaten is absorbed through the small intestine and then the unabsorbed parts of the food accumulates, moves and stores in the large intestine. In large intestine the water and ions are absorbed through it's muscular walls, therefore the materials turn solid. The solid materials move out of the body through anus, by means of the muscles in large intestine and rectum contracting and moving the solid wastes forward. when blood cells die their colour change to brown/yellow and the bile coming from the liver causes the faeces to have a brownish colour. The smell of the faeces is the result of bacterias in the faeces, therefore giving it a bad smell.