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E K G TECHNICIAN X

E K G TECHNICIAN THE HEART AND WHAT IT DOES

TermDefinition
MYOCARDIUM THE MIDDLE & CONTRACTILE LAYER OF THE HEART
ENDOCARDIUM THE INNER LAYER OF THE HEART
EPICARDIUM THE OUTERMOST LAYER OF THE HEART
PERICARDIUM THIN LAYER OF FLUID THAT PREVENTS FRICTION
S1 FIRST HEART SOUND (LUBB)
S2 SECOND HEART SOUND (DUBB)
SYSTOLE PERIOD OF CONTRACTION OF BOTH ATRIAL AND VENTRICLE BLOOD IS BEING PUMPED TO THE PULMONARY AND SYSTEMIC SYSTEM
DIASTOLE THE PERIOD OF CONTRACTIONOF ALL CARDIAC CHAMBERS RELAXATION WHEN FILLING THE ATRIA AND VENTRICLE OCCURS.
MURMURS ARE CAUSED BY DISEASES OF THE VALVES OR STRUCTURAL ABNORMALITIES
STROKE VOLUME (PRE-LOAD) BLOOD VOLUME EJECTED OUTSIDE THE VENTRICLE AFTER EACH CONTRACTION
CIRCULATION VASCULAR RESISTAANCE AND CARDIAC OUTPUT
VASCULAR RESISTANCE (AFTER-LOAD)
CARDIAC OUTPUT AMOUNT OF BLOOD EJECTED OUTSIDE THE HEART PER MINUTE NORMAL OUTPUT IS 60-100ml HEART RATE X STROKE VOLUME X 1 MINUTE =S LITERS PER MINUTE
BLOOD PRESSURE AKA BP IS FORCE EXERTED BY THE CIRCULATION OF BLOOD VOLUME ONT HE WALLS OF THE ARTERIES DURING CIRCULATION
SEMI LUNAR VALVES HALF MOON SHAPED (3 LEAFLETS) WITH ACCESSORY ORGANS THAT CLOSE AT THE BASE OF THE PULMONARY AND AORTIC VESSELS
A.V. VALVES ATRIOVENTRICULAR VALVES ARE LOCATED BETWEEN THE ATRIA AND VENTRICLE CHAMBERS, NO ACCESSORY ORGANS
BRACHMAN'S BUNDLE PROVIDES A PATHWAY FOR IMPULSES TO TRAVEL TO THE LEFT ATRIA
INTERNODAL PATHWAY SENDS IMPULSES TOT HE A. V. NODES
A.V. JUNCTION THE A.V. J. PORTION OF THE ELECTRIC CONDUCTION SYSTEM OF THE HEART. LOCATED UPPER INTERVENTRICULAR SEPTUM. CONDUCTS THE EXCITATION IMPULSE FROMT EH ATRIA TO THE BUNDLE OF HIS.
PURKINJE FIBERS 20-40 BPM
S.A. NODE SINOATRIAL NODE IS THE PACEMAKER OF THE HEART REGULATES HEAR RATE TO 60-100BPM
BUNDLE OF HIS 40-60 BPM
FOUR CHAMBERS OF THE HEART RIGHT ATRIUM, RIGHT VENTRICLE, LEFT ATRIUM, LEFT VENTRICLE
BLOOD FLOWS ONE DIRECTION THROUGHT THE 4 HEART VALVES; TRICUSPID, PULMONARY, MITRAL AND AORTIC
THE HEART IS LOCATED IN THE MEDIASTENUM, BEHIND THE STERNUM, IN FRONT OF THE SPINE, BETWEEN THE LUNGS ABOVE THE DIAPHRAGM
THE BASE OF THE HEART IS LOCATED 5TH INTERCOSTAL LEFT SIDE
TWO KINDS OF HEART CELLS CONDUCTION AND CONTRACTION
CONDUCTION CELLS CREATE AND CONDUCT THE ELECTRICAL IMPULSES TO TELL THE HEART WHEN TO BEAT
CONTRACTION CELLS CAUSE THE HEART TO CONTRACT RESULTING IN A HEART BEAT
HEART IS INFLUENCED BY THE AUTONOMIC NERVOUS SYSTEM (ANS) WHICH CONTROLS THE INVOLUNTARY BIOLOGICAL FUNCTIONS
CORONARY ARTERIES LEFT ANTERIOR DESCENDING (LAD) CIRCUMFLEX AND RIGHT CORONARY ARTERY
LEFT ANTERIOR DESCENDING (LAD) BRANCH OFF LEFT MAIN CORONARY ARTERY PROVIDE BLOOD FLOW TO ANTERIOR WALL OF THE LEFT VENTRICLE
CIRCUMFLEX BRANCHES OFF TEH LEFT MAIN CORONARY ARTETY PROVIDES BLOOD FLOW TO THE LATERAL WALL OF THE LEFT VENTRICLE
RIGHT CORONARY ARTERY PROVIDES BLOOD FLOW TO THE RIGHT VENTRICLE AND INFERIOR WALL OF THE LEFT VENTRICLE
A.N.S. AUTONOMIC NERVOUS SYSTEM HAS TO PARTS SYMPATHETIC AND PARASYMPATHETIC CAN INFLUENCED THE RATE AND STRENGTH OF CONTRACTIONS
SYMPATHETIC NERVOUS SYSTEM HITS THE ACCELORATOR, IS FIGHT OR FLIGHT RESPONSE, SPEEDS UP HEART RATE, INCREASES BP, DIALATES PUPILS, SLOWS DIGESTION, MEDIATED BY HORMONE NOREPINEPHRINE
PARASYMPATHETIC NERVOUS SYSTEM PUTS ON THE BRAKES, IS REST AND DIGEST RESPONSE, SLOWS DOWN HEART RATE, LOWERS BP, ENHANCES DIGESTION
HEART SOUNDS ARE CAUSED BY CLOSURE OF THE VALVES
ARTERIES CARRY BLOOD AWAY FROM THE HEART , BLOOD IS OXYGENATED 100%
VEINS CARRY BLOOD TO THE HEART, BLOOD IS DEOXYGENATED, UAUALLY 60-75%
CORONARY ARTERIES ARE LOCATED AT THE BASE OF THE AORTA, SENDS BLOOD TO THE HEART
CORONARY VEINS RETURN BLOOD TO EMPTY BACK IN TO THE RIGHT ATRIUM OF THE HEART
SKELETON OF THE HEART STRONG FIBROUS MUSCLE TISSUES THAT PROTECT THE VALVES FROM OPENING DURING A CONTRACTION, SEPARATES ATRIA FROM TEH VENTRICLE
AUTOMATICITY THE ABILITY TO PRODUCE AN ELECTRICAL IMPULSE ON ITS OWN
EXCITABILITY THE ABILITY TO RESPOND TO AN ELECTRICAL STIMULUS
CONDUCTABILITY THE ABILITY TO TRANSPORT AN ELECTRICAL STIMULUS
CONTRACTILITY THE ABILITY TO CONTRACT WHEN STIMULATED
HERAT CELLS HAVE 4 UNIQUE PROPERTIES CONDUCTABILITY, CONTRACTILITY, AUTOMATICITY, EXCITABILITY
DEPOLARIZATION WHEN + POSITIVE ELECTROLYTES MOVE FROM OUTSIDE TO THE INSIDE OF THE CELL CAUSING IT TO BECOME POSITVELY CHARGED.
ELECTROLYTES PRODUCE POSITIVE AND NEGATIVE CHARGES ARE:SODIUM, CALCIUM AND POTASSIUM
FLOW OF AN ELECTRICAL IMPULSE (SA)NODE INTRINSIC RATE 60-100BPM > ATRIA TO (AV) NODE SLOWS TO INTRINSIC RATE OF 40-60 > PURKINJE FIBERS SLOWS AGAIN TO 20-40 BPM IS DISTRIBUTED THROUGHOUT THE VENTRICLES
Created by: vondasutton