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Name __________________________________ Period _____ Date_____________Row #______ FOOD FOR THOUGHT Name __________________________________ Period _____ Date_____________Row #______ Complete the following tables using information from your textbook. Table 1: Organs of the Digestive Tract and Their Functions ORGAN FUNCTIONS SECRETIONS MECHANICAL OR CHEMICAL DIGESTION? MOUTH EPIGLOTTIS ESOPHAGUS STOMACH SMALL INTESTINE LARGE INTESTINE RECTUM Table 2: Accessory Organs of the Digestive System and Their Functions ORGAN SALIVARY GLANDS PANCREAS LIVER GALL BLADDER FUNCTIONS SECRETIONS MECHANICAL OR CHEMICAL DIGESTION? Name __________________________________ Period _____ Date_____________Row #______ Use the graph to answer the following question. The graph above shows the progress of digestion as carbohydrates, fats, and proteins pass through the human digestive tract. The horizontal axis indicates the relative distance along the digestive tract, from the mouth to the anus. The vertical axis indicates the percentage of undigested food remaining as the food moves down through the digestive tract. The percentages of undigested carbohydrate, fat, and protein are shown separately, but they are identified only as “A,” “B,” and “C.” Correctly identify which of the graph lines shows carbohydrate digestion, which shows fat digestion, and which shows protein digestion. A = _________________________ B = _________________________ C = _________________________ Name __________________________________ Period _____ Date_____________Row #______ Use the chart below to calculate the time your food spends in each section of your digestive system. Then calculate the total time (in hours) that it spends in your digestive system. SMALL LARGE INTESTINES INTESTINES 7:31 am 11:38 am 11:38 am 11:40 pm 11:40 pm 3:50 am ______min ______min ______min Table 2 MOUTH ESOPHAGUS STOMACH Time food entered Time food left 7:28 am 7:30 am 7:30 am 7:31 am Total Time Spent in each organ ______min ______min Total time spent in the digestive system (in hours) _________________________________________________ Answer the following questions. 1. In what part of the digestive tract are most nutrients absorbed? …most water? _______________________________________________________________________________________ _______________________________________________________________________________________ 2. What process allows humans to swallow upside down? _______________________________________________________________________________________ _______________________________________________________________________________________ 3. How do accessory organs aid in digestion? _______________________________________________________________________________________ _______________________________________________________________________________________ 4. How do villi of the small intestine increase the rate of absorption? _______________________________________________________________________________________ _______________________________________________________________________________________
