Question

what does the pancreas produce?
adrenaline, which triggers the bodys fight or flight response.
melatonin, which regulates sleep - wake cycles.
thyroxine, which regulates metabolism and growth in the body.
insulin, which increases blood sugar levels and glucagon, which decreases blood sugar levels.
insulin, which decreases blood sugar levels and glucagon, which increases blood sugar levels.

Explanation:

The pancreas is an organ in the body. It has an endocrine function. Insulin is produced by the beta cells in the islets of Langerhans in the pancreas. Its role is to decrease blood sugar levels by promoting the uptake of glucose by cells. Glucagon is produced by the alpha cells in the islets of Langerhans. Its role is to increase blood sugar levels by promoting glycogenolysis (breakdown of glycogen to glucose) and gluconeogenesis (synthesis of glucose from non - carbohydrate sources).
Adrenaline (epinephrine) is produced by the adrenal medulla. Melatonin is produced by the pineal gland. Thyroxine is produced by the thyroid gland.

Answer:

Insulin, which decreases blood sugar levels and glucagon, which increases blood sugar levels.