Final answer:
A tumor composed of muscle tissue is known as a sarcoma, which is a type of cancer originating from connective tissue, including muscle-derived cells.
Step-by-step explanation:
A tumor composed of muscle tissue is referred to as a sarcoma. Muscle tissues, derived from the mesodermal layer of embryonic germ cells, include three types: smooth, skeletal, and cardiac muscle tissue. Sarcomas are a type of cancer that arise from connective tissues, which include those of muscle origin. Skeletal muscle tissue specifically is made up of various integrated tissues including blood vessels, nerve fibers, connective tissue, and muscle fibers. These fibers are capable of contracting due to the action of protein filaments sliding over one another, powered by ATP. A sarcoma of the muscles can originate from any mutations in the cells that compose the muscle tissue, leading to an uncontrolled division and growth of these mutated cells. A tumor composed of muscle tissue is known as a sarcoma, which is a type of cancer originating from connective tissue, including muscle-derived cells.