what is the length of human alimentary canal?
|Van De Graaf, Kent. Human Anatomy. McGraw-Hill. 2000.||"The GI tract extends from the mouth to the anus, is a continuous tube about 30 ft long."||9 m|
|"Alimentary Canal." Encyclopedia of Family Health. Volume 1. Marshall Cavendish, 1998.||"The body's food-processing plant is the alimentary canal, a muscular tube about 33 ft (10 m) long that starts at the mouth and ends at the anus."||10 m|
|National Geographic Society. Exploring the Human Body. Washington, DC: National Geographic Society, 1998.||"Basically an extended and convoluted tube, the 30-ft-long digestive tract packs itself efficiently into the abdominal cavity."||9 m|
|Gray, Henry F.R.S. Gray's Anatomy. Pennsylvania: Running Press, 1974.||"The alimentary canal is a musculo-membrane tube, about 30 ft in length, extending from the mouth to the anus."||9 m|
|Dubois, Andre. "Alimentary Canal." World Book Online America's Edition, 2001.||"Alimentary canal is a long tube through which food is taken into the body and digested.In human beings, this passage is about 30 ft (9 m) long."||9 m|