Posted on Leave a comment

digestive system coloring page

She shares lots of interesting fun facts. There are various websites which offer such coloring pages for free. Originated in Ireland, the festival is greatly celebrated in some other countries including USA, Canada, Japan, UK, Sweden, Australia, New Zealand and Ireland itself.

digestive system coloring page Digestive System Organs Coloring Page Younger Students

In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work. After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. In infants and toddlers gastric juice also contains rennin. As the first two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which is waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes.

Select among the characters that you need and click the image that you would like to color. This underlines the importance of visual aids in learning and development of kids. Despite the fact that coloring pages can contain simple pictures, it is sometimes a challenging job for children.

Leave a Reply