To further complicate card type detection, this mapping changes when card companies allocate new numbers, form partnerships with other card companies, or go out of business. When implemented correctly, automatically detecting card type improves payment form usability.
Masseter muscle. In human anatomy, the masseter is one of the muscles of mastication. In the animal kingdom, it is particularly powerful in herbivores to facilitate chewing of plant matter. The most obvious muscle of mastication is the masseter muscle, since it is the most superficial and one of the strongest. Contents.
And a small number of muscles are named after their function. 1  The risorius is a facial muscle that is crucial for the expressions of smiling and laughter. 2  Masseter comes from the Greek word for chew, and that's its function in the human jaw.