The Digestive System

Front

What is the main function of the digestive system?

Back

To break down food into nutrients that the body can absorb and use for energy, growth, and cell repair.

Front

What is cellulose and why is it important for cows?

Back

Cellulose is a complex carbohydrate found in plant cell walls. Cows have microorganisms in their guts that help break down cellulose, allowing them to digest grass and other plant materials.

Front

What is the average length of a human adult's small intestine?

Back

About 7 meters (23 feet), where most nutrient absorption occurs.

Front

What role does bile play in digestion?

Back

Bile acts as an emulsifier, helping to mix fats with water in the digestive system, making it easier for enzymes to break down fats.

Front

What is a bolus?

Back

A bolus is a ball of food and saliva that forms in the mouth during the process of chewing.

Front

What is the epiglottis and its function?

Back

The epiglottis is a flap of tissue that blocks the trachea when swallowing, preventing food from entering the airway.

Front

What are enzymes and their role in digestion?

Back

Enzymes are biological catalysts that speed up chemical reactions, including the breakdown of food into smaller molecules.

Front

What is peristalsis?

Back

Peristalsis is the wave-like muscle contractions that move food through the digestive tract.

Front

What is the difference between mechanical and chemical digestion?

Back

Mechanical digestion involves physical processes like chewing and grinding, while chemical digestion involves enzymatic breakdown of food.

Front

What is the role of the stomach in digestion?

Back

The stomach stores food and uses acids and enzymes to break it down into a semi-liquid form called chyme.