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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 9
Author: nadstheteacher
Last Modified: 7 years ago

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Respiration, Digestion, and Excretion Question

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Grade 9 Respiration, Digestion, and Excretion

What triggers the production of saliva? Select all that apply.
  1. glands in the mouth
  2. taste buds on the tongue
  3. smell or thought of food
  4. chewing on food
  5. production of adrenaline