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Apologia General
Module 13
Question | Answer |
---|---|
digestion | The process by which an organism breaks down its food into small units that can be absorbed by the body. |
ingestion | The process of digestion starts with ingestion of food or drink. |
physical digestion | The first part of digestion: breaking up food into tiny pieces without changing the chemical nature of the food. |
saliva | The "spit" in the mouth which contains chemicals that break down starch. |
chemical digestion | The second part of digestion: the process by which pieces of food are chemically altered so that the body can absorb them. |
alimentary canal | The digestive tract. The sum of parts through which food actually passes. |
vitamin | A chemical substance the body needs in small amounts to stay healthy. |
small intestine | Organ in which most of the absorption of nutrients occurs. |
stomach | Organ in which the bolus is turned into chyme. |
large intestine | Converts waste into feces. |
pancreas | The organ which produces the sodium bicarbonate that helps to neutralize the stomach acid in the chyme. |
liver | Produces bile. |
salivary glands | Produce saliva. |
tongue | Moves food around the mouth to form the bolus. |
epiglottis | Covers the larynx when you swallow to make sure that food goes down the esophagus only. |
vitamins C and B | Water-soluble vitamins. |
vitamins D and K | Absorbed by the body even if they are not in any food that is eaten. Vitamin D can be made by the body through sunlight hitting the skin, and vitamin K is made by bacteria in the large intestine. |
vitamins D, E and K | Fat-soluble vitamins which build up easily in the body. |