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Questions and Answers
Which of the following organs is NOT part of the human digestive system?
Which of the following organs is NOT part of the human digestive system?
- Kidney (correct)
- Esophagus
- Liver
- Stomach
What are the three sites of digestion in the human digestive system?
What are the three sites of digestion in the human digestive system?
- Esophagus, stomach, and small intestine (correct)
- Oral cavity, stomach, and large intestine
- Stomach, small intestine, and large intestine
- Oral cavity, esophagus, and small intestine
What is the function of saliva in the human digestive system?
What is the function of saliva in the human digestive system?
- To break down fats
- To break down carbohydrates (correct)
- To break down proteins
- To break down vitamins
What happens during swallowing in the human digestive system?
What happens during swallowing in the human digestive system?
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Which enzyme in saliva is responsible for digesting starch and glycogen?
Which enzyme in saliva is responsible for digesting starch and glycogen?
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Study Notes
- The human digestive system is a long tube from mouth to anus.
- It consists of oral cavity, esophagus, stomach, small intestine, and large intestine.
- Salivary glands, liver, and pancreas are associated with different regions.
- There are three sites of digestion: oral cavity, stomach, and small intestine.
- Functions of oral cavity include food selection, grinding, lubrication, and digestion.
- Saliva contains water, mucus, sodium bicarbonate, and carbohydrate-digesting enzymes.
- Swallowing involves the tongue pushing the bolus to the back of the mouth.
- The soft palate closes the nasal opening and the epiglottis closes the windpipe during swallowing.
- Small pieces of food are easier to digest and pass through the esophagus.
- Ptyalin enzyme in saliva digests starch and glycogen to maltose.
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