Which of the following statements is FALSE regarding a highlighted accessory organ involved in digestion?

The statement that 90% of the cells perform digestive functions is incorrect when considering the highlighted accessory organ involved in digestion, which is likely referring to the pancreas. In reality, although the pancreas does have a significant role in digestion, particularly in producing digestive enzymes, a large portion of its cells are dedicated to endocrine functions rather than solely digestive functions. The majority of the pancreatic tissue consists of islet cells (Islets of Langerhans), which are responsible for the endocrine functions such as insulin production, rather than enzyme secretion directly involved in digestion.

The other statements regarding the pancreas are accurate. It does indeed produce insulin to help regulate blood glucose levels, which is a crucial metabolic function, and it serves both endocrine (hormone production) and exocrine (enzyme production) roles. This dual functionality highlights the complex nature of the pancreas as an accessory organ in the digestive system. Therefore, the statement about 90% of the cells performing digestive functions is false, emphasizing the predominance of endocrine functions in the pancreas.