D. Parathyroid Glands 1. Are four small glands found on the dorsal surface of the thyroid gland. Stimulus for release is a decrease in plasma calcium ion. The adrenal gland 1. This is the most important mineralocorticoid.
Middle layer produces cortisol, a hormone that causes an increase in blood sugar.
The inner layer produces sex hormones. The androgens produced here are responsible for libido in females. The adrenal medulla a. Responsible for the flight or fight response. Causes increase in heart rate, blood sugar, bronchiole diameter, and alertness among other things.