Many of the symptoms you describe are vague and could be due to a number of things including Provera. Some of the common side effects of this medication include weight gain, weak bones, headaches, fatigue, swelling. These symptoms could also be caused by a number of things such as thyroid problems.
Myofibrils are assembled of repeated structures called sarcomeres â the smallest functional unit of muscle fiber. Each sarcomere is formed of actin (called thin) and myosin (called thick) filaments arranged in a precise order and of protein complexes which support the filament structures.
These 10 animal facts will amaze you. A sarcomere is the basic functional unit of striated muscle, which is to say, itâs the basic building block of most muscle cells. In the human body, each muscle is made up of multiple bundles of muscle fibers. These muscle fibers, in turn, are comprised of numerous finer strands called myofibrils.