Digestive System

The video explains the digestive process, starting from the mouth where mechanical and chemical digestion begins. It details how food is broken down in the stomach and further processed in the small intestine, where nutrients are absorbed. The large intestine then handles waste, absorbing water and salts, with bacteria aiding in digestion. The digestive system ensures the body receives necessary nutrients long after a meal.

What is the primary function of saliva in the mouth during digestion?

• To chemically break down starches into sugars

• To break down proteins into amino acids

• To absorb nutrients into the bloodstream

• To grind food into smaller pieces

Which part of the digestive system is responsible for pushing food from the throat to the stomach?

• Trachea

• Esophagus

• Large intestine

• Small intestine

What is the role of bile in the digestive process?

• To emulsify fats into smaller droplets

• To neutralize stomach acid

• To break down proteins

• To absorb water and salts

How does the small intestine contribute to nutrient absorption?

• By absorbing nutrients into the bloodstream

• By producing bile

• By storing waste material

• By breaking down fats into fatty acids

What happens to the remaining material after it leaves the small intestine?

• It enters the large intestine for water absorption

• It is broken down by stomach acids

• It is stored in the gallbladder

• It is absorbed into the bloodstream