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The beta cells, which are a component of the Islets of Langerhans, in the pancreas produce the hormone insulin. In addition to delta cells, which produce glucagon, these islets also include alpha cells.

The "endocrine" cells of the pancreas create hormones. The islets of Langerhans, which are collections of these cells, keep an eye on blood activity. When necessary, they can then release hormones directly into the circulation.

T3 is another name for the thyroid hormone triiodothyronine. It has an impact on nearly every physiological process in the body, including metabolism, body temperature, growth and development, and heart rate.

T4 is another name for the type of thyroid hormone known as thyroxine.

Your pancreas produces the hormone glucagon to aid in controlling your blood glucose (sugar) levels.