Using a customer supplied envelope, an individual can mail a Priority Mail Express letter envelope weighing one ounce up to sixteen ounces for $31.20 plus the extra fee of $12.50 to add Sunday/Holiday Delivery.
muscle cell-an elongated contractile cell that forms the muscles of the body. muscle fiber, muscle fibre. fibre, fiber-any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber).
Muscle tissues. There are three major types of muscle cells. The striated or skeletal muscle is under voluntary control and is the major effector organ of our bodies. It and the glands (endocrine and exocrine) carry out all the commands of the nervous and endocrine (communication) systems.onnective tissue: blood (red cells and white cells) Muscle tissues There are three major types of muscle cells. The striated or skeletal muscle is under voluntary control and is the major effector organ of our bodies.