The carbohydrate-rich foods you consume start out with a variety of complex and simple carbohydrates, but ultimately, they must be digested into monosaccharides in order to be absorbed into the bloodstream. blood glucose levels are regulated closely by insulin and glucagon (and four other hormones) in order to ensure a steady supply of glucose to the brain and other tissues. select all of the sentences below that correctly describe a step in the processes of digestion, absorption, and/or blood glucose regulation. select all that apply.