digestion

What is the primary function of the esophagus in the digestive system?

• To store waste
• To break down food chemically
• To absorb nutrients
• To transport food to the stomach

Which of the following statements about digestion is accurate?

• The small intestine is where most digestion occurs
• Nutrients are absorbed in the large intestine
• Mechanical digestion happens only in the mouth
• Digestion only occurs in the stomach

What is the main function of the large intestine?

• Digesting proteins
• Absorbing water and electrolytes
• Storing bile
• Absorbing nutrients

Which stage of digestion involves the breakdown of food into simpler molecules?

• Mechanical Digestion
• Chemical Digestion
• Absorption
• Ingestion

Which stage of digestion involves the elimination of indigestible substances?

• Absorption
• Defecation
• Mechanical Digestion
• Chemical Digestion

What is the role of villi in the small intestine?

• To produce digestive enzymes
• To store waste
• To transport food
• To absorb nutrients

How do microvilli enhance nutrient absorption?

• By producing digestive enzymes
• By transporting nutrients to the bloodstream
• By increasing the surface area of the intestinal lining
• By breaking down food into simpler molecules

Which nutrient is broken down into amino acids during digestion?

• Carbohydrates
• Vitamins
• Proteins
• Fats

Which nutrient requires emulsification by bile for absorption?

• Fats
• Proteins
• Vitamins
• Carbohydrates

How does understanding digestion influence dietary choices?

• It makes no difference in health.
• It has no impact on dietary choices.
• It helps in choosing foods that are easier to digest.
• It encourages eating more processed foods.