A decrease in calcium blood levels is termed:

An increase in potassium levels is known as:

During the resting period, what type of line is recorded on the EKG strip?

All of the following cations affect cardiac function EXCEPT:

Cells responsible for generating the physical contraction of the heart muscle are the:

Which cardiac cell characteristic function is mechanical?

The ability of the cell membrane to change to allow the movement of ions is called:

The ________ cells have the ability to create an electrical impulse without being stimulated by a nerve.

Automaticity is the ability of cardiac pacemaker cells to:

The term threshold refers to the point at which a _______ will produce a cell response.

The cation that is extracellular is:

During the absolute refractory period the cardiac cell:

An ion with a positive charge is called a(n):

During the polarized or resting state, the inside of the cell is electrically:

The term that is also referred to as irritability is:

The specialized pacemaker cells contain contractile filaments.

The primary function of the myocardial working cell is contraction only.