Approximately what percentage of the action of local anesthetic drugs is due to cation binding at specific protein receptor sites?

To determine the amount due from a patient, it is necessary to know the:

A. billed amount. B. allowed amount. C. adjusted amount. D. diagnostic code.

The brain is highly dependent on the constant supply of ____ provided by the blood.

A. glucose and fatty acids B. oxygen and fatty acids C. glucose and protein D. oxygen and glucose