Digestive enzymes: Ptyalin is an enzyme produced where in the human body? Name the secreting site associated with starch digestion initiation. Choose the correct site.

Difficulty: Easy

Salivary glands (saliva in the mouth)
Gastric glands of the stomach
Pancreas (pancreatic juice)
Liver (bile)

Correct Answer: Salivary glands (saliva in the mouth)

Explanation:

Concept / Approach
Ptyalin is salivary amylase, secreted by salivary glands into the mouth, initiating starch → maltose digestion.

Why others are incorrect
Pepsin is gastric; trypsin/amylase/lipase are pancreatic; bile is from the liver (stored in gallbladder) but contains no digestive enzymes.

Final Answer
Salivary glands produce ptyalin.

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