The fluid surrounding the brain and spinal cord is called _____

To be a medical director of an ambulance service, which one of the following requirements must the individual satisfy?

A) Licensed physician B) Emergency physician with surgical experience C) Physician who was a paramedic D) Physician with a college degree in EMS

For a resting potential in a cardiac cell to exist, there must be an:

A) adequate number of potassium ions inside the cell and sodium ions outside the cell. B) adequate number of sodium ions inside the cell and potassium ions outside the cell. C) influx of calcium ions into the cell. D) ionic equilibrium between the inside and outside of the cell.