Insulin is primarily produced by which organ in the body?

Insulin is primarily produced by the pancreas, which plays a crucial role in regulating blood glucose levels. The pancreas contains clusters of cells known as islets of Langerhans, where beta cells specifically produce insulin. This hormone is key in facilitating the uptake of glucose into cells for energy while also regulating various metabolic processes.

While the liver plays a role in glucose metabolism by storing and releasing glucose as needed, it does not produce insulin. Similarly, the kidneys are involved in filtering blood and managing waste but are not responsible for insulin production. The thyroid gland primarily regulates metabolism through hormones like thyroxine, but it does not produce insulin. Therefore, the pancreas stands out as the organ essential for insulin synthesis and secretion.