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What is INGESTION?
Action whereby food is taken in to the alimentary canal.
What is DIGESTION?
Action whereby large insoluble molecules of food are broken down to small molecules.
What is ABSORPTION?
Action whereby small molecules are absorbed into the blood.
What is ASSIMILATION?
How the nutrient molecules are used to become part of your body.
What is DEFECATION?
Indigestible food residues removed from the body in the from of feces.
Name the two types of digestion.
Physical Digestion and Chemical Digestion
Physical digestion is also called what?
Mechanical Digestion.
Name a substance that aids chemical digestion.
Enzymes
Name three actions whereby physical digestion is performed.
Grinding, biting, chewing, mixing, squeezing.
What is the most important function of physical digestion?
It enlarges the surface area of the food by enabling digestive juices to get into closer contact with the food for enzyme action.
Chewing is also known as?
Mastication
What is the ALIMENTARY CANAL?
The whole passage along which food passes through the body from mouth to anus during digestion.
Name 5 organs that make up the alimentary canal.
Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus.
Give the order in which nutrition takes place, i.e. from when someone eats food until where the waste exists the body.
1. Ingestion
2. Digestion
3. Absorption
4. Assimilation
5. Defecation
Name the accessory digestive organs.
Liver, gallbladder, pancreas.
Name the ball-like mixture of food and saliva that forms in the mouth during the process of chewing.
Bolus
