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).
A muscle cell is specialized to contract and relax in unison with other muscle cells in a muscle tissue when you want to move a certain muscle(controlled by your cerebrum).I hope this answers your question! Ciao!aking the world better, one answer at a time. A muscle cell is specialized to contract and relax in unison with other muscle cells in a muscle tissue when you want to move a certain muscle(controlled by your cerebrum). I hope this answers your question! Ciao!