Hawaii Massage License Practice Exam

Which organ contains insulin-producing beta cells?

1. Liver

2. Pancreas

3. Spleen

4. Gallbladder

The correct answer is: Pancreas

The pancreas is the organ that contains insulin-producing beta cells, which are crucial for regulating blood glucose levels. These beta cells are located in clusters known as the islets of Langerhans within the pancreas. When blood sugar levels rise after a meal, beta cells release insulin, allowing cells to absorb glucose and thus maintain normal blood sugar levels. This process is vital for metabolic homeostasis and overall health. In contrast, the liver is primarily responsible for storing glucose and producing energy but does not contain insulin-producing cells. The spleen plays a key role in filtering blood and immune responses but does not function in insulin production. The gallbladder, on the other hand, is involved in the storage and concentration of bile but does not have a role related to insulin or blood glucose regulation. Understanding the distinct functions of these organs helps clarify why the pancreas is the correct answer in this context.