Quiz 4

The number of times a heartbeat in a certain time frame. Usually a minute.

The mechanical action caused by repolarization. Also called diastole.

Negative ions return to the inside of the cell and positive ions return to the outside of the cell. Should produce relaxation or diastole in a healthy heart.

Period of time when the cell is unable to respond to an electrical stimulus

The regularity of the heartbeat or the complexes on an EKG strip. Can be regular, irregular, or regularly irregular.

Straight or isoelectric lines connecting the waves.

The _____ of the heart is a wall of tissue that separates the left and right sides of the heart and enables blood to flow as it should.

a small mass of specialized tissue located in the right upper chamber (atria) of the heart. natural pacemaker of the heart

carries blood from the head, neck, arms, and chest.

The part of the EKG machine that “writes” the EKG recording.