pancreas
A. Control and balance levels of calcium and phosphate in blood and tissue fluids
B. Secretes androgen hormones, including testosterone and estrogen
C. Involved in regulating the body's sugar levels
D. Regulates the sleep-wake cycle
E. Secretes chemicals that dramatically alter energy levels
F. Produces hormones that control the rate at which cells burn fuels from food
for energy
C. Involved in regulating the body's sugar levels