Exam 2: Waves and Measurements

The horizontal lines on the EKG graph paper measure:

The short period of electrical inactivity between the end of the P wave and the start of the QRS complex is called the:

On EKG graph paper,the distance in time between two light vertical lines,or across one small square,is ________ sec.

On EKG graph paper,the time between two heavy vertical lines is five small boxes,or ________ sec.

The EKG machine produces an upright deflection on the graph paper if the flow of electricity is toward the ________ electrode.

A series of cardiac cycles makes up a(n):

No impulse can cause depolarization during the ________ refractory period.

The vertical lines on the EKG graph paper measure:

Which of the following best describes the elements of a single cardiac cycle?

Which of the following is NOT a normal QRS measurement?

The distance between two "tic" marks is ________ sec.

The PR interval begins at the first sign of the P wave and ends at the first sign of the next deflection,which is called the:

A strong impulse can cause a premature abnormal discharge during the ________ refractory period.

The PR interval reflects all ________ activity.

When an EKG machine is turned on but not yet connected to the patient,the stylus produces a straight line called the ________ line.

The deflections above and below the isoelectric line are referred to as: