See a picture of the spine. Upper and middle back pain is not as common as low back pain or neck pain, because the bones in this area of the back don't flex or move as much as the bones in your lower back or neck.
Fats are a class of lipids containing two kinds of monomers, fatty acids and glycerol. Glycerol is a three carbon biomolecule containing three hydroxyl groups, one bonded to each carbon atom. Dehydration synthesis creates an ester linkage between the carboxyl group of fatty acids and a hydroxyl group in glycerol.
There are 3 main types of lipids. a. Neutral fats - make up adipose tissue in our bodies and functions as long term energy storage, insulates and protects. The unit molecules or monomers that make up neutral fats are fatty acids and glycerol. Neutral fats are composed of one glycerol molecule and 3 fatty acid chains. The diagram below shows the reaction that results in the formation of a neutral fat. X is glycerol, and Y represents the 3 fatty acid molecules.