Answer:
Pancreas
Step-by-step explanation:
- Islets of Langerhans of the pancreatic islets are the endocrine cells that are found in the pancreas.
- These are known as endocrine cells because they secrete hormones.
- There are two types of islet - alpha and beta.
- The alpha cells are responsible for the secretion of the hormone glucagon and the beta cells for the secretion of insulin.
- The release of hormones from either the beta or alpha cells is regulated by the blood glucose levels.
- If the level of glucose in the blood is low glucagon is released and if the glucose level is high then insulin is released.