DPT-772: ECG LECTURE EXAM QUESTIONS AND ANSWERS
VERIFIED LATEST UPDATE SOLUTIONS VERIFIED
how much fluid is in the parietal pericardial space
10-20 mL of fluid in the cavity
what is endocarditis
inflammation of inner lining, can lead to bad consequences
L main coronary artery
has more branches than the R since the L side of the heart if more muscular
where does deoxygenated myocardium blood return to
deoxygenated blood from myocardium goes back to R atrium via coronary veins
what happens when the heart is in diastole (relaxation)
blood is filling from both sides
what is happening during systole (contraction)
blood is being pumped from the heart to the lungs or the rest of the body
automaticity
hearts ability to initiate electrical impulse
conductivity
ability of myocardial cells to receive and conduct electrical impulses
contractility
ability of the heart muscle to shorten in response to electrical impulses
excitability
ability of the heart to respond to impulse or stimulus
, pathways for conduction
SA node--> AV node-->bundle of His or the AV bundle--> bundle branches--> purkinje
fibers
SA node
located in the upper R portion of the R atrium, initiates the heartbeat, pace maker of the
heart, normal conduction begins here
Atrioventricular Node (AV)
located on the floor of the R atrium, causes delay in electrical impulse, can act as
pacemaker if SA node is not working (40-60 bpm)
bundle of his (AV bundle)
located next to the AV node, transfers electrical impulse from atria to ventricles via
bundle branches
bundle branches
splits electrical impulses down both sides, from interventricular septum, impulses
activate myocardial tissue causing contraction of the L & R ventricles
purkinje fibers
electrical pathway for each cardiac cell, activate L and R ventricles simultaneously,
produce an electrical wave
do the atria pump out more per contraction that the ventricles pump out
no they pump out equal amounts
which ventricle pumps out more volume of blood per contraction
both pump the same
limb leads bipolar and unipolar happen which plane
VERIFIED LATEST UPDATE SOLUTIONS VERIFIED
how much fluid is in the parietal pericardial space
10-20 mL of fluid in the cavity
what is endocarditis
inflammation of inner lining, can lead to bad consequences
L main coronary artery
has more branches than the R since the L side of the heart if more muscular
where does deoxygenated myocardium blood return to
deoxygenated blood from myocardium goes back to R atrium via coronary veins
what happens when the heart is in diastole (relaxation)
blood is filling from both sides
what is happening during systole (contraction)
blood is being pumped from the heart to the lungs or the rest of the body
automaticity
hearts ability to initiate electrical impulse
conductivity
ability of myocardial cells to receive and conduct electrical impulses
contractility
ability of the heart muscle to shorten in response to electrical impulses
excitability
ability of the heart to respond to impulse or stimulus
, pathways for conduction
SA node--> AV node-->bundle of His or the AV bundle--> bundle branches--> purkinje
fibers
SA node
located in the upper R portion of the R atrium, initiates the heartbeat, pace maker of the
heart, normal conduction begins here
Atrioventricular Node (AV)
located on the floor of the R atrium, causes delay in electrical impulse, can act as
pacemaker if SA node is not working (40-60 bpm)
bundle of his (AV bundle)
located next to the AV node, transfers electrical impulse from atria to ventricles via
bundle branches
bundle branches
splits electrical impulses down both sides, from interventricular septum, impulses
activate myocardial tissue causing contraction of the L & R ventricles
purkinje fibers
electrical pathway for each cardiac cell, activate L and R ventricles simultaneously,
produce an electrical wave
do the atria pump out more per contraction that the ventricles pump out
no they pump out equal amounts
which ventricle pumps out more volume of blood per contraction
both pump the same
limb leads bipolar and unipolar happen which plane
