Digestive System Functions and Models

Mrs. Han guides students through the Digestive System Gizmo, explaining the functions of digestion, absorption, and elimination. Students explore various digestive organs, build a model of the digestive system, and simulate the digestion process. The video concludes with an analysis of the simulation results and suggestions for improvement.

What are the three main functions of the digestive system?

• Absorption, respiration, and circulation

• Digestion, circulation, and respiration

• Digestion, absorption, and elimination

• Elimination, circulation, and respiration

Which organ is responsible for starting mechanical digestion?

• Stomach

• Mouth

• Large intestine

• Esophagus

What is the role of the small intestine in digestion?

• Absorbs nutrients and water

• Stores bile

• Compacts waste

• Breaks down proteins

Which cells produce pepsin for protein digestion?

• Chief cells

• Parietal cells

• Lymphatic cells

• Capillary cells

What is the function of the gallbladder?

• Absorbs nutrients

• Stores bile

• Produces digestive enzymes

• Compacts waste

What is the first step in building a digestive system model in the Gizmo?

• Add the small intestine

• Begin with the mouth

• Include the pancreas

• Start with the stomach

What should you do after building your digestive system model?

• Start over

• Analyze its efficiency

• Submit it immediately

• Add more organs

What percentage of calories was absorbed in the initial model test?

• 75%

• 50%

• 100%

• 2.02%

What should you do if your digestive system model is not efficient?

• Remove organs

• Add more food

• Ignore the results

• Rearrange the organs

What is the purpose of the lymphatic vessels in digestion?

• Produce bile

• Break down proteins

• Store waste

• Transport absorbed fatty acids