EKG Chapter 3

fluid and particles outside of and surrounding the cell

Within a cell

An ion or a small particle that is positively or negatively charged

a layer of protein that surrounds a cell and keeps it separted from the surrounding fluid and cells

the natural pacemaker of the heart, located in the upper part of the right atrium

a current, or a wave of electricity

process of the ions returning to their original places

how the wave form looks, its shape and regulatiry.

SA node. electrical impulses that causes the heart to beat

the electrical impulses that originate from the SA node that create a waveform

aread where the atrium and ventricle meet

special conductive tissue in the middle of the septum of the heart. allows smooth and rapid conduction of the electrical impulse from the AV node to the ventricle

special conductive tissue fibers that extend from the bundle of His and into the left and right ventricle

confuction fibers that branch off from the bundle brances and deliver the electrical stimulus to the ventricles causing the ventricles to contract

the series of electrical and mechanical events that comprise each heart beat

the period of time in which the heart muscle is contracting.

the period of time when the heart muscle is relaxed

the forcing of blood into the surrounding tissues and organs by way of the blood vessels

special conductive tissue located in the lower right atrium that conducts electrical impulses from the atria to the ventricles