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Chapter 2-EKG

The Cardiovascular System

QuestionAnswer
ACTION POTENTIAL THE CHANGE IN THE ELECTRICAL POTENTIAL OF THE HEART MUSCLE WHEN IT IS STIMULATED; DEPOLARIZATION FOLLOWED BY REPOLARIZATION
AORTA THE LARGEST ARTERY OF THE BODY; TRANSPORTS BLOOD FROM THE LEFT VENTRICLE OF THE HEART TO THE ENTIRE BODY.
AORTIC SEMILUNAR VALVE VALVE LOCATED IN THE AORTA THAT PREVENTS THE BACKFLOW OF BLOOD INTO THE LEFT VENTRICLE
(AV) ATRIOVENTRICULAR NODE DELAYS THE ELECTRICAL IMPULSE TO ALLOW THE ATRIA TO COMPLETE THEIR CONTRACTION
(PL ATRIA) ATRIUM TOP TWO CHAMBERS OF THE HEART
AUTOMATICITY THE ABILITY OF THE HEART TO INITIATE AN ELECTRICAL IMPULSE WITHOUT BEING STIMULATED BY ANOTHER OR INDEPENDENT SOURCE
BUNDLE BRANCHES LEFT AND RIGHT BRANCHES OF THE BUNDLE OF HIS THAT CONDUCT IMPULSES DOWN EITHER SIDE OF THE INTERVENTRICULAR SEPTUM TO THE LEFT AND RIGHT SIDE OF THE INTERVENTRICULAR SEPTUM TO THE LEFT AND RIGHT VENTRICLES.
(AV BUNDLE)BUNDLE OF HIS LOCATED NEXT TO THE AV NODE; PROVIDES THE TRANSFER OF THE ELECTRICAL IMPULSE FROM THE ATRIA TO THE VENTRICLES.
CARDIAC CYCLE THE CONTRACTION AND RELAXATION OF THE HEART
COMPLEXES ATRIAL OR VENTRICULAR CONTRACTIONS AS THEY APPEAR ON THE ECG; COMPLETE ECG WAVEFORMS.
CONDUCTIVITY THE ABILITY OF THE HEART CELLS TO RECEIVED AND TRANSMIT AN ELECTRICAL IMPULSE
CONTRACTILITY THE ABILITY OF THE HEART MUSCLE CELLS TO SHORTEN IN RESPONSE TO AN ELECTRICAL STIMULUS
CORONARY CIRCULATION THE CIRCULATION OF BLOOD TO AND FROM THE HEART MUSCLE
DEOXYGENATED BLOOD BLOOD THAT HAS LITTLE OR MINIMAL OXYGEN (OXYGEN - POOR BLOOD)
DEPOLARIZATION THE ELECTRICAL ACTIVATION OF THE CELLS OF THE HEART THAT INITIATES CONTRACTION OF THE HEART MUSCLE.
DIASTOLE THE PHASE OF THE CARDIAC CYCLE WHEN THE HEART IS EXPANDING AND REFILLING; ALSO KNOWN AS THE RELAXATION PHASE.
EXCITABILITY THE ABILITY OF THE HEART MUSCLE CELLS TO RESPOND TO AN IMPULSE OR STIMULUS.
INTERVAL THE PERIOD OF TIME BETWEEN TWO ACTIVITIES WITHIN THE HEART
INTERVENTRICULAR SEPTUM A PARTITION OR WALL (SEPTUM) THAT DIVIDES THE RIGHT AND LEFT VENTRICLES
ISCHEMIA LACK OF BLOOD SUPPLY TO AN AREA OF TISSUE DUE TO A BLOCKAGE IN THE CIRCULATION TO THAT AREA
LEFT ATRIUM THE LEFT UPPER CHAMBER OF THE HEART, WHICH RECEIVES BLOOD FROM THE LUNGS
LEFT VENTRICLE LEFT LOWER CHAMBER OF THE HEART, WHICH PUMPS OXYGENATED BLOOD THROUGH THE BODY. IT IS BIGGEST AND STRONGEST CHAMBER, KNOWN AS THE WORKHORSE OF THE HEART.
MITRAL (BICUSPID) VALVE VALVE WITH 2 CUSPS OR LEAFLETS LOCATED BETWEEN THE LEFT ATRIUM AND LEFT VENTRICLES; IT PREVENTS BACKFLOW OF BLOOD INTO THE LEFT ATRIUM.
MYOCARDIAL PERTAINING TO THE HEART (CARDIA) MUSCLE (MYO)
OXYGENATED BLOOD BLOOD HAVING OXYGEN (OXYGEN-RICH BLOOD).
PERICARDIUM A 2 LAYERED SAC OF TISSUE ENCLOSING THE HEART
POLARIZATION THE STATE OF CELLULAR REST IN WHICH THE INSIDE IS NEGATIVELY CHARGED AND THE OUTSIDE IS POSITIVELY CHARGED.
PULMONARY ARTERY LARGE ARTERY THAT TRASPORTS DEOXYGENATED BLOOD FROM THE RIGHT VENTRICLE TO THE LUNGS. THIS IS THE ONLY ARTERY IN THE BODY THAT CARRIES DEOXYGENATED BLOOD
PULMONARY CIRCULATION THE TRANSPORTATION OF BLOOD TO AND FROM THE LUNGS; BLOOD IS OXYGENATED IN THELUNGS DURING PULMONARY CIRCULATION
PULMONARY SEMILUNAR VALVE A VALVE FOUND INTHE PULONARY ARTERY THAT PREVENTS BACKFLOW OF BLOOD INTO THE RIGHT VENTRICLE DURING PULMONARY CIRCULATION
PULMONARY VEIN TRANSPORTS OXYGENATED BLOOD BACK INTO THE LEFT ATRIUM OF THE HEART.
PURKINJE FIBERS THE FIBERS WITHIN THE HEART THAT DISTRIBUTES ELECTRICAL IMPULSES FROM CELL TO CELL THOUGHOUT THE VENTRICLES
PURKINJE NETWORK SPREADS THE ELECTRICAL IMPULSE THOUGHOUT THE VENTRICLES BY MEANS OF THE PURKINJE FIBERS.
REPOLARIZATION WHEN HEART MUSCLES CELLS RETURN TO THEIR RESTING ELECTRICAL STATE AND THE HEART MUSCLE RELAXES
RIGHT ATRIUM THE RIGHT UPPER CHAMBER OF THE HEART, WHICH RECEIVES BLOOD FROM THE BODY.
RIGHT VENTRICLE THE RIGHT LOWER CHAMBER OF THE HEART, WICH PUMPS BLOOD TO THE LUNGS.
SEGMENT A PORTION OR PART OF THE ELECTRICAL TRACING PRODUCED BY THE HEART
SEMILUNAR VALVE A VALVE WITH HALF-MOON SHAPED CUSPS THAT OPEN AND CLOSE, ALLOWING BLOOD TO TRAVEL ONLY ONE WAY; LOCATED IN THE PULMONARY ARTERY AND THE AORTA
SINOATRIAL (SA) NODE AN AREA OF SPECIALIZED CELLS IN THE UPPER RIGHT ATRIUM THAT INITIATES THE HEARBEAT
SYSTEMIC CIRCULATION THE PATHWAYS FOR PUMPING BLOOD THROUGHOUT THE BODY AND BACK TO THE HEART
SYSTOLE THE CONTRACTION PHASE OF THE CARDIAC CYCLE, DURING WHICH THE HEART IS PUMPING BLOOD OUT TO THE BODY.
TRICUSPID VALVE VALVE LOCATED BETWEEN THE RIGHT ATRIUM AND RIGHT VENTRICLE; IT PREVENTS BACKFLOW OF BLOOD INTO THE RIGHT ATRIUM.
VENA CAVA (PL. VENAE CAVAE) THE LARGEST VEIN IN THE BODY; ALLOWS DEOXYGENATED BLOOD TO RETURN TO THE HEART;
Created by: spoon6464