High blood glucose levels cause an increased secretion of ________.

A) insulin
B) calcitonin
C) erythropoietin
D) glucagon
E) growth hormone

Insulin

A hormone produced by the pancreas that regulates blood glucose levels by facilitating the uptake of glucose into cells, used in the body's metabolism.

Glucagon

A hormone produced by the pancreas that increases blood glucose levels by stimulating the conversion of glycogen to glucose in the liver.

Calcitonin

Calcitonin is a hormone produced by the thyroid gland that helps regulate calcium levels in the blood by lowering them.