A myofibril (also known as a muscle fibril) is a basic rod-like unit of a muscle cell.Muscles are composed of tubular cells called myocytes, known as muscle fibers in striated muscle, and these cells in turn contain many chains of myofibrils. Thin filaments consist primarily of the protein actin, coiled with nebulin filaments. 2  Actin, when polymerized into filaments, forms the ladder along which the myosin filaments climb to generate motion. 3  Thick filaments consist primarily of the protein myosin, held in place by titin filaments.
Topics | Beauty and Personal Care | Skin Care | Skin Injury | Is the Fraxel laser procedure a safe option for acne scars? Fraxel Laser is one of the many types of Fractionated Lasers available on the market today. Although the Fraxel was the first Fractional Laser created, they all work on the same principal. As the name suggests, it removes a fraction of your skin to cause a hole in the skin the shape of a cylinder and the size of a pin prick. This heat tunnel is deep enough to cause the stimulation of new collagen fibers which results in an improvement of the acne scar.
Whether your skin damage is mild, moderate or severe, the Fraxel laser may help. Fraxel is a laser skin rejuvenation treatment that resurfaces your outer skin, erasing imperfections. It also encourages the production of collagen, a protein found in connective tissue. Collagen is instrumental in maintaining firm, youthful, healthy-looking skin, but its production drops off as we age.