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.
Definition of HALOGEN. : any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VIIA of the periodic table and exist in the free state normally as diatomic molecules. â haÂ·logÂ·eÂ·nous \ha-Ëlae-ËlÃ¤-jÉ\ nÉs. adjective any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VIIA of the periodic table and exist in the free state normally as diatomic molecules. â haÂ·logÂ·eÂ·nous \ha-Ëlae-ËlÃ¤-jÉ\ nÉs. Adjective see halogen defined for. kids