The sciatic nerve is a large nerve that starts in the lower back. 1  It forms near the spine and is made up from branches of the roots of the lumbar spinal nerves. 2  It travels through the pelvis and then deep into each buttock. 3  It then travels down each leg. It is the longest and widest single nerve in the body.
A triglyceride is an ester derived from glycerol and three to four fatty acids. Triglycerides are the main constituents of body fat in humans and other animals, as well as vegetable fat. They are also present in the blood to enable the bidirectional transference of adipose fat and blood glucose from the liver, and are a major component of human skin oils. There are many different types of triglyceride, with the main division between saturated and unsaturated types. Saturated fats are saturated
Cholesterol and triglycerides are lipids. Lipids are easily stored in the body. They serve as a source of fuel and are an important constituent of the structure of cells. Lipids include fatty acids, neutral fats, waxes and steroids (like cortisone).holesterol and triglycerides are lipids. Lipids are easily stored in the body. They serve as a source of fuel and are an important constituent of the structure of cells. Lipids include fatty acids, neutral fats, waxes and steroids (like cortisone).