Human Respiratory and Digestive System Anatomy Quiz

Lungs are the primary organs for exchanging oxygen and carbon dioxide in the respiratory system.

The small intestine is the main site for absorbing nutrients from digested food.

The esophagus is the tube that connects the throat to the stomach, allowing food to pass from the mouth to the stomach.

The liver does not produce insulin; its functions include bile production, detoxification, and nutrient storage.

The gallbladder stores and concentrates bile produced by the liver, releasing it as needed for digestion.

The epiglottis functions to prevent food from entering the windpipe (trachea) during swallowing.

Amylase is the enzyme responsible for breaking down carbohydrates (starch) into simpler sugars in the mouth.

The diaphragm aids in breathing by contracting and relaxing, causing changes in thoracic volume.

Pepsin is the enzyme responsible for breaking down proteins in the acidic environment of the stomach.

The appendix is not a component of the respiratory system; it is part of the digestive system.

Alveoli facilitate the exchange of oxygen and carbon dioxide between air and blood in the respiratory system.

The liver secretes bile, which aids in the digestion and absorption of fats.

Mucus in the respiratory system helps trap and remove dust particles and other foreign substances from the inhaled air.

Villi in the small intestine increase surface area and facilitate the absorption of nutrients from digested food.

Gastric glands in the stomach produce hydrochloric acid, aiding in the digestion of food.