What role does the hypothalamus play in regulating blood glucose levels

The ventromedial hypothalamus is a crucial nexus in the initiation of the glucose counter-regulatory response which is partially mediated via glucagon release by the pancreas. The arcuate nucleus of the hypothalamus is preferentially implicated in fine-tuning insulin release

Explanation:

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.