[French dÃ©jÃ -vu : dÃ©jÃ , already (from Old French des ja, from now on, from des, from + ja, now + from Latin iam) + vu, seen (from Old French veu, from Vulgar Latin vidÅ«tus, alteration of vÄ«sus, past participle of vidÄre, to see; see weid- in Indo-European roots).]
Rating Newest Oldest. Best Answer: The muscles are made up of packages of stretchable fibre like material. Every fibre of the muscle is approximately forty millimeter in length and is made up of a number of very small strands which are known as fibrils. These fibres are extremely slender, so much so that one square centimeter of a muscle contains in it up to one million fibres.
You control some of your muscles, while others â like your heart â do their jobs without you thinking about them at all. Muscles are all made of the same material, a type of elastic tissue (sort of like the material in a rubber band). Thousands, or even tens of thousands, of small fibers make up each muscle.