dÃ©jÃ  vu [(day-zhah vooh)] The strange sensation that something one is now experiencing has happened before: âI knew I had never been in the house before, but as I walked up the staircase, I got a weird sense of dÃ©jÃ  vu.â From French, meaning âalready seen.â.
Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell.uscle tissues are derived from the mesodermal layer of embryonic germ cells in a process known as myogenesis. There are three types of muscle, skeletal or striated, cardiac, and smooth.
Muscle can be described as striated or smooth. Striated includes skeletal and cardiac muscle. The striations result from the highly uniform organization of the fundamental elements of the contractile apparatus, that being the actin (thin) filaments and the myosin-containing (thick) filaments.dentify the three types of muscle: smooth, cardiac and skeletal; understand why the latter two are referred to as striated muscles. 3. Identify the myofibrils and cross-striations in striated muscle fibers. 4. Distinguish between smooth muscle and dense regular connective tissue. 5.