Term
| Humans have a ______body plan and possess a complete ______that begins with the _____and ends with the ______. |
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Definition
| tube within a tube; digestive tract; mouth; anus |
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Term
| What are the two major stages of digestion? |
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Definition
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Term
| What is mechanical digestion? |
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Definition
| the pysical breakdown of food |
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Term
| What is chemical digestion? |
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Definition
| when enzymes are secreted by the digestive tract or accesory organs nearby to help breakdown food |
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Term
| Food enters the mouth and the____and_____retain the food while it is chewed by the ______and mixed with _____and manipulated by the _____. |
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Definition
| cheek and lips; teeth; saliva; tongue |
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Term
| What enzyme _____begins the process or starch digestion. |
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Definition
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Term
| When food is swallowed, the ____moves back to close off the ______and a flap of tissue called the _____covers the _____which is an opening to the trachea. |
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Definition
| soft palate; nasopharynx; epioglottis; gottis; |
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Term
| The food moves into the pharynx and then into the _____ because air passages are now blocked. |
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Definition
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Term
| The ball of food moving through the body is called _____ |
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Definition
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Term
| The esophagus moves the food to the _____. |
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Definition
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Term
| The muscular walls of the stomach contract viogrously and mmix food with ____that are excreted whenever food enters the stomach |
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Definition
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Term
| Eventually, food mixing with the gastric juice of the stomach becomes ____ which has a rich creamy consistency. |
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Definition
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Term
| Where is the sphincter found and what does it do? |
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Definition
| found at the base of a stomach; it surrounds a tube and it closes and opens the tube by contracting and relaxing |
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Term
| Whenever the sphincter relaxes, what happens? |
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Definition
| a small amount of chyme passes through the opening into the small intestine |
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Term
| What is the first part of the small intestine called? |
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Definition
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Term
| Where does bile come from and what does it do? |
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Definition
| bile from the gall bladder comes into the small intestine and emulsifies fat |
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Term
| Also pancreatic juice from the pancreas comes into the small intestine and _____. |
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Definition
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Term
| The wall of the small intestine contains projects called ____. |
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Definition
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Term
| Nutrients are absorbed into the _____of the villus which has a _____. |
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Definition
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Term
| _____and _____enter the blood capilaries of the villus. |
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Definition
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Term
| _____and _____enter the epithelial cells of the villi and are joined and packaged as _____. |
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Definition
| glycerol and fatty acids; lipoprotein droplets |
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Term
| The lipoprotein droplets enter a ____. |
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Definition
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Term
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Definition
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Term
| After nutrients are absorbed, where are they taken? |
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Definition
| to the rest of the body through the bloodstream |
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Term
| What are the four parts of the large intestine? |
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Definition
| cecum, colon, rectum, anus |
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Term
| What is the function of the colon? |
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Definition
| it absorbs water during digestion |
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Term
| The large intestine also contains a lot of _____which help breakdown nondigestible materials and produce some vitamins. |
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Definition
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Term
| Digestive wastes eventually leave the body through the ____. Feces are ____ and _____. |
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Definition
| anus; 75% water and 25% solid matter |
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