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.
Three types of muscle. You've got around 650 muscles in your body, and they make up roughly half of your bodyweight. These muscles can be divided into three different groups: skeletal, smooth and cardiac. All of these muscles can stretch and contract, but they perform very different functions. Skeletal muscle. The tissue most commonly thought of as muscle is skeletal muscle. Skeletal muscles cover your skeleton, giving your body its shape.