The epiglottis acts as a flap that covers the trachea during swallowing, preventing food from entering the airway.
Pepsin, secreted by the stomach, is the main enzyme responsible for protein digestion in an acidic environment.
The large intestine absorbs water and electrolytes, forming solid waste (feces) for excretion.
Bile emulsifies fats, breaking them into smaller droplets, which aids in fat digestion and absorption.
The pylorus is the part of the stomach that connects to the small intestine and controls the release of food into the duodenum.
The small intestine is the primary site for nutrient absorption due to its large surface area created by villi and microvilli.
