Microvilli are most often found in the small intestine, on the surface of egg cells, as well as on white blood cells. In the intestine, they work in conjunction with villi to absorb more nutrients and more material because they expand the surface area of the intestine.
(February 2017) A copayment or copay is a fixed amount for a covered service, paid by a patient to the insurance company before patient receives service from physician. In the United States, copayment is a payment defined in an insurance policy and paid by an insured person each time a medical service is accessed.
In contrast, the deductible is the amount of money that a patient must pay before major services are covered, usually things like hospitalizations or surgery. Copays are part of a patient's payment toward one particular bill and something he usually needs to bring with him at the time of service.