Which organ is involved in ingestion

Continued From Above ... but do not have food pass through them. Accessory organs of the digestive system include the teeth, tongue, salivary glands, liver, gallbladder, and pancreas. To achieve the goal of providing energy and nutrients to the body, six major functions take place in the digestive system: Ingestion.

Digestion starts in the "mouth" and continues in the stomach. The small intestine completes the digestion process.