Glucagon is a hormone that increases blood glucose levels by promoting glycogenolysis and gluconeogenesis in the liver.

Parathyroid hormone (PTH) increases blood calcium levels by stimulating osteoclast activity, increasing intestinal absorption of calcium, and promoting renal reabsorption of calcium.

Melatonin is a hormone produced by the pineal gland that helps regulate circadian rhythms and sleep-wake cycles.

Epinephrine, also known as adrenaline, is released from the adrenal medulla and is crucial for the fight-or-flight response, increasing heart rate and energy availability.

Vasopressin, also known as antidiuretic hormone (ADH), is released from the posterior pituitary and helps regulate water balance by promoting water reabsorption in the kidneys.

Cortisol is a glucocorticoid hormone produced by the adrenal cortex that plays a crucial role in the body's response to stress.