C. 46 The Musculoskeletal System Animations

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What events enhance digestion in the stomach?

Central nervous system stimulation, secretion of gastrin, and stomach distention

T/F: When chyme enters the duodenum, gastric secretion increases

False, when chyme enters the duodenum, stretch reflexes and hormones inhibit gastric secretion

Secretin is released from the duodenum in response to...

Hydrochloric acid in chyme

Which of the following is the correct order for the major parts of the gastrointestinal tract?

Mouth, esophagus, stomach, small intestine, large intestine

Involuntary muscle contractions which move a bolus through the gastrointestinal tract are called...

Peristalsis

If the duodenum is at a pH of 3 or higher, what events will occur?

Secretion of hydrochloride acid Secretion of pepsin Continued stimulation of gastric glands

The liver is not directly responsible for the digestion process, but releases bile and other compounds that breakdown fats. What would be a consequence if the liver was not able to release these compounds?

The small intestine would not be able to absorb fats

Specific hormones are released from the small intestine and travel through the circulatory system. If these hormones are not released, what do you predict would be the initial consequence?

The stomach will continue to release pepsin and hydrochloric acid

Classify the locations of digestion into voluntary and involuntary stages. 1. Esophagus 2. Large intestine 3. Mouth/oral cavity 4. Pharynx 5. Small intestine 6. Stomach

Voluntary: 3, Involuntary: 1, 2, 4, 5, 6

As food travels through our digestive system, it passes through a series of regions and organs. Select the correct order of food passage after the mastication stage using the numbering system below

1, 5, 4, 2


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