Beta1-receptor agonists are used to treat circulatory shock, cardiac arrest, and:

On the CMS-1500 claim form, the abbreviation DD indicates that:

up to two diagnosis codes can be entered. a doctor of dentistry performed the service. the day of the month should be entered as two digits. durable medical equipment (DME) was ordered.

Which of these is a muscle of mastication?

orbicularis oris zygomatic minor mentalis masseter