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.
Origins, insertions, innervation and functions of the muscles of mastication. This is the main masticatory muscle which causes mandibular elevation and protrusion and assists the other muscles to move the mandible laterally. The masseter originates from the inferior border of the anterior two thirds of the zygomatic arch and promptly terminates at the mandibular angle and the inferior and lateral borders of the mandibular ramus.