During swallowing:
1.all processes are consciously controlled.
2.the swallowing center located in the medulla oblongata inhibits the medullary respiratory center.
3.the vocal folds are relaxed.
4.the food bolus is forced down the esophagus by gravity.
2
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A) follicle cells B) interstitial cells C) granulosa cells D) sustentocytes
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A. duodenum B. jejunum C. colon D. ileum
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