Humans have three different kinds of muscle: 1  Skeletal muscle is attached to bone, mostly in the legs, arms, abdomen, chest, neck, and face. Skeletal muscles are called striated because they are made up of fibers that have horizontal stripes when viewed under a microscope. These muscles hold the skeleton together, give the body shape, and help it with everyday movements (known as voluntary muscles because you can control their movement). They can contract (shorten or tighten) quickly and powerfully, but they tire easily and have to rest between workouts.
Cancer cells have a number of abnormal characteristics that prevent them from functioning in the same manner as normal cells. They divide repeatedly and form tumors in the place of origin and in other parts of the body.Cancer is actually over a hundred different diseases.ancer Cells Lack Differentiation Cancer cells are nonspecialized and do not contribute to the functioning of a body part. Cancer Cells Have Abnormal Nuclei The nuclei of cancer cells are enlarged and may contain an abnormal number of chromosomes.
Large cell. The cell is larger than are normal cells. Examples include lung cancer and lymphoma. Small cell. The cell is smaller than are normal cells. An example is small cell lung cancer, which is an aggressive cancer that often spreads to other parts of your body (metastasizes). Squamous cell. The cell is flat in appearance. Examples include skin cancer or any other type of cancer that starts in the lining of some organs, such as a bronchus of a lung.