#alimentary

Watson: Thank you, Holmes

Tubes make our lives possible. Are they the most important shape in the world? How do they affect people, from digestion to love-making to bicycles?

Open doors.

A biology Noble Prize winner, once said, ‘The world is made up of tubes.’ Consider the human body as an example! Of course, tubes need doors, otherwise our longest tube, the alimentary canal, would be a disaster. We have a door each end, a few in the middle and a mobile door, driven by peristalsis, which is a kind of moving door. Perhaps the doors are more important than the tubes.

Body Basics: Alimentary Canal – How the Digestive System Works

[ad_1] Food is the fuel of the body. But before it can be of any use, it must be properly processed. The body’s food processing plant is the alimentary canal, a muscular tube about 10 m (33ft) long which starts at the mouth and ends at the anus.

When food is put in the mouth, it is tested for taste and temperature by the tongue. Solid food is bitten off by the front teeth (incisors), and then…

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