Body Systems

What is the primary function of the small intestine in the digestive system?

• Absorbing nutrients

• Producing bile

• Storing food

• Mixing and breaking down food

Which enzyme is responsible for breaking down proteins in the stomach during the digestive process?

• Amylase

• Lipase

• Pepsin

• Trypsin

Which organ is responsible for producing bile to help with the digestion of fats in the digestive system?

• Liver

• Stomach

• Gallbladder

• Pancreas

Which of the following structures is responsible for the absorption of nutrients into the bloodstream during the digestive process?

• Villi

• Appendix

• Esophagus

• Epiglottis

Which enzyme is responsible for breaking down carbohydrates in the mouth during the digestive process?

• Amylase

• Pepsin

• Trypsin

• Lipase

Which of the following structures is responsible for the exchange of oxygen and carbon dioxide in the respiratory system?

• Bronchi

• Alveoli

• Trachea

• Diaphragm

Which of the following is the primary muscle responsible for breathing?

• Intercostal muscles

• Diaphragm

• Abdominal muscles

• Pectoral muscles

Which of the following is the correct pathway of air as it moves through the respiratory system?

• Trachea > Pharynx > Larynx > Bronchi > Alveoli

• Pharynx > Larynx > Trachea > Bronchi > Alveoli

• Larynx > Pharynx > Trachea > Bronchi > Alveoli

• Pharynx > Trachea > Larynx > Bronchi > Alveoli

During the process of gas exchange in the respiratory system, which specific feature of the alveoli maximizes the surface area available for the exchange of oxygen and carbon dioxide?

• Cilia

• Smooth muscle

• Elastic fibers

• Thin walls

What is the main function of red blood cells in the circulatory system?

• To transport oxygen and carbon dioxide

• To fight off infections and pathogens

• To regulate blood pressure

• To produce antibodies for immune response