What structures does the alimentary canal consist of?

The alimentary canal, also known as the gastrointestinal (GI) tract, comprises a continuous tube that runs from the mouth to the anus. It plays a critical role in digestion and the absorption of nutrients. The correct option includes all the essential components of this canal: the mouth, where digestion begins with chewing and saliva; the pharynx, which acts as a passageway to the esophagus; the esophagus, which transports food to the stomach; the stomach, where food is mixed with gastric juices; the intestines (both small and large), where nutrient absorption takes place; and the anus, which serves as the exit point for waste. Each of these structures contributes to the overall process of digestion and nutrient assimilation, illustrating the complexity and functionality of the alimentary canal.