Human Digestive System Flashcard

Front

What is a food calorie defined as?

Back

The amount of energy needed to raise 1,000 g of water by 1 degree Celsius

Front

Which nutrient is the body's main source of energy?

Back

Carbohydrates

Front

What are amino acids essential for?

Back

Formation of new protoplasm

Front

Which nutrient provides twice as much energy per gram as carbohydrates?

Back

Fats

Front

What is the primary function of vitamins?

Back

Support body functions

Front

What do minerals not provide?

Back

Energy

Front

What is the first step in the digestion process?

Back

Ingestion

Front

What is the length of the alimentary canal?

Back

9 meters

Front

What is the primary function of the mouth in digestion?

Back

Both mechanical and chemical digestion

Front

What enzyme in saliva breaks down starches?

Back

Salivary amylase