The motor point is usually located at the center of the muscle mass where the motor nerve enters the muscle.
Definition A carcinogen is defined as something that can directly cause cancer. This can be a chemical substance, a virus, or even the medications and radiation we use to treat cancer. While many cancers are caused by a carcinogen or combination of carcinogens, the tendency to develop cancer may also be inherited as part of our genome.
(kÃ¤r'sÉ-nÅ'mÉ) Plural carcinomas or carcinomata (kÃ¤r'sÉ-nÅ'mÉ-tÉ) Any of various cancerous tumors that are derived from epithelial tissue of the skin, blood vessels, or other organs and that tend to metastasize to other parts of the body. See also basal cell carcinoma, squamous cell carcinoma.