which endocrine gland regulates sugar level in blood

The endocrine gland that regulates the sugar level in the blood is the pancreas.

The pancreas does this through its endocrine cells (islets of Langerhans), which release:

• Insulin , which lowers blood sugar when it gets too high.

• Glucagon , which raises blood sugar when it gets too low.

Together, these hormones keep blood glucose within a healthy range throughout the day.