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.
carcinogen noun [C]. âº a âsubstance that âcauses âcancer: The American âgovernment âclassifies both âasbestos and âenvironmental âtobacco âsmoke as âclass one carcinogens. (Definition of carcinogen from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).