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Home > Anatomy & Physiology > Digestive System for kids - Facts

Digestive System for Kids - Facts

Facts About the Digestive System

At birth, we have about 10,000 taste buds on the surface of the tongue, in the throat, and on the roof of the mouth.
It is a myth that the tongue is the strongest muscle in the body. The tongue is made up of 16 different muscles and as yet there is no conclusive evidence that it is the strongest. If all the muscles in the human body had a weight lifting contest then the masseter or jaw muscle would come out top.
The appendix has no function in the human body. Charles Darwin thought that it was used for digesting leaves when we were primates.
An adult stomach has the capacity to hold around 1 litre of food and liquid. The stomach can expand though and it is believed to be able to increase its capacity to between 2 - 4 litres.
About 11 liters of fluid, digestive juices and digested food is circulated around your digestive system.

On average 1 to 1.5 litres of Saliva is secreted into the mouth every day.
It doesn't matter which way up you are for food to reach the stomach - you can be upside down and the food will still get there and throughout all the parts of the digestive system.
The role of the mouth is not only mastication (chewing) but also to get the pulp to a temperature that is acceptable for the rest of the digestive tract.
Gastric Acid contains Hydrocholic acid (about 0.5%) which can corrode metal, it has a PH value between 1 and 2. Anything with a PH less than 2 is considered as “strong acid” and can burn the skin.
The stomach lining is replaced continuously, and it is completely replaced approximately every 5 -10 days.

Resources:

Digestive system quiz
Diet crossword
Digestion, excretion, expiration, perspiration online quizzes
Digestive System Worksheet :

Download and label the digestive system

The Human Digestive System

Learn More About:

Capillary structure

Energy production
Smooth muscle

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