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.
An agent known to cause cancer; a cancer-producing substance. carcinogenic-a carcinogen is a chemical known or believed to cause cancer in mammals.Some chemicals are proven carcinogens, but many more are suspected to be carcinogenic. carcinogenic-a substance that has the capability of causing cancer. carcinogen is any chemical known to cause cancer, there are a great many number of items known to have carcinogens present in them. Examples include paint, cigaretes, and mo â¦ re.