Multiple choice

Salivary amylase and mucins are found in

  1. Stomach

  2. Duodenum

  3. Pancreatic Juice

  4. Mouth

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chewing breaks food into smaller particles so that chemical digestion can occur faster. Salivary amylase breaks starch (a polysaccharide) down to maltose (a disaccharide). Bicarbonate ions in saliva act as buffers, maintaining a pH between 6.5 and 7.5. Mucins (mucous) lubricate and help hold chewed food together in a clump called a bolus. The tongue contains chemical receptors in structures called taste buds.

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