Front | Back |
The alimentary canal of a living person is longer or shorter than a cadaver? Why?
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Shorter, due to muscle tone
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What are the accessory digestive organs? (3) What are the accessory digestive glands? (3)
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Organs: Teeth, tongue, gall bladder
Glands: Pancreas, Liver, Salivary Glands |
Which of the accessory glands/organs lie outside the GI tract?
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Gall bladder and all the glands (pancreas, liver, salivary)
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The processing of food involves what 6 essential activities?
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Ingestion, Propulsion, Mechanical Digestion, Chemical Digestion, Absorption, and Defecation
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Propulsion process of alternating waves of contraction and relaxation
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Peristalsis
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What are the 4 parts of Mechanical Digestion?
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Chewing (Teeth), Mixing (Tongue), Churning (Stomach), Segmentation (Sm. Intestines)
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Rhythmic local constrictions of the small intestines that mixes food with digestive juices, increasing the efficiency by different food parts over the intestinal walls
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Segmentation
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Series of catabolic steps in which complex food molecules are broken down by enzymes beginning in the mouth and essentially ending in the small intestines
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Chemical Digestion
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What is the major absorptive site?
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Small Intestines
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Passage of digested end products from the lumen through mucosal cells and into the blood via active or passive transport
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Absorption
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Elimination of indigestible substances
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Defecation
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Only the ______ ingests and only the _____ defecates
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Mouth / Large Intestines
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Name one organ in the alimentary canal found in the thorax
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Esophagus
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What is the usual site of ingestion?
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Mouth (in a healthy person)
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What essential digestive activity actually moves nutrients from the outside to the inside of the body?
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Absorption
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