Question

Drag each label into the appropriate position in order to identify whether the structure is an actual part of the digestive tract or an accessory structure.

Answer 1

The right answer is:
Accessory organs:
Tongue, Salivary glands, Pancreas, Liver, Gallbladder. (and appendices)
They participate in the digestion indirectly (by physical or chemical digestion).

Digestive: Oral cavity, Stomach, Esophagus, Small intestine, Large intestine, Rectum.
They participate by the absorption and the transport of the food/nutrients from the mouth to the rectum.