How does a long digestive tract help to digest food?

Answer 1

1. because it is a narrow in some parts and wide in others. Truely Yours JLimson.

2.Your digestive system is likened to a long tube because it consists of the digestive tract, also known as the alimentary tract or alimentary Canal and basically resembles a long tube through which food you have eaten passes. In that tube the food you have consumed gets absorbed and nutrients extracted and used for the energy you need and for building and repairing your bodies' cells. The food gets broken down in each section of the tube as it passes down you, with approximate time period that anything you have eaten is in there beimg as shown in brackets :-

mouth (1 minute),

throat (10 seconds),

gullet (1 second),

stomach (2 to 4 hours)

small intestine (1 to 6 hours),

large intestine (10 hours to several days)

rectum (1 minute to several hours),

The above parts of your body all connected, and that whole connection structure look not unlike sections of a long garden hose.

Then the final stage is your anus which is an extension of your rectum as it passes backwards, it being about 4 centimetres long, and through it your faeces get expelled from your body normally only when you are sat on a lavatory seat. It is opened only during your expelling your faeces from your body at the very bottom of the referred to "tube". At all other times it is kept shut by the muscles of your anus sphincter which can not be controlled voluntary and your external sphincter which can be relaxed at your will for "defecation".

Answer 2

It helps to brake down the food that you ate 7-8 hours ago and makes it into waste.