Which nutrient is digested first in the mouth?

Option 3 : Carbohydrates

The correct answer is carbohydrates.

• Carbohydrates are first digested in the mouth.
• The process of digestion in humans starts from the mouth.
• The saliva secreted by the salivary glands contains the enzyme ptyalin, which acts upon some polysaccharides and breakdown into disaccharides like maltose.
• The food then transfers from the esophagus to the stomach where it gets digested.
• The small intestine absorbs all the nutrients from what we eat and drink.
• The large intestine absorbs water from the wastes and creates stool.