Nuclear Medicine Board Review 9.0 UPDATED ACTUAL Questions and
CORRECT Answers
where does the heart rest?
what is a cardiac cycle?
what is the sac surrounding the heart?
what are the three layers of the heart?
what are the 4 chambers of the heart?
where is the tricuspid valve?
where is the mitral valve located?
Where does deoxygenated blood enter the heart?
what is ventricular diastole?
what is ventricular systole?
Where oxygen and carbon dioxide are exchanged
where does oxygenated blood enter?
where does the blood enter during ventricular systole?
what areas of the heart does the right coronary artery
supply?
where does the left coronary artery go and supply blood
to?
what is systemic circulation?
, mediastinu returns deoxygenated blood to the heart
m period from one heart contraction (systole) to the next
pericardiu
m
the epicardium (external layer), the myocardium
(middlelayer) and the endocardium (inner layer).
left atrium, right atrium, left ventricle, right ventricle
between right atrium and right ventricle
between left atrium and left ventricle
right atrium from superior and inferior vena cava
relaxation/filling stages, where the tricuspid valve
opens and allows blood to flow from the right atrium to
the rightventricle
contraction of ventricles where blood exits the right
ven-tricle through the pulmonary valve into the
pulmonary arteries then to the lungs
alveoli (blood becomes 02 rich)
left atrium through the pulmonary veins to the mitral
valveto the left ventricle (during diastole)
into systemic circulation through the aortic valve then
tothe aorta to the body
posterior descending artery (PDA) and posterior and
in-ferior area of myocardium
branches into left anterior descending and left
circumflexartery, provides blood to septal and anterior
myocardial wall
oxygenated blood away from the heart to the body and
, what does the electrical impulse in the heart do? initiates contraction starting at the SA node
where is the SA node and what is its role? in the right atrium and is the pacemaker of the heart
after the SA node where is the electric signal sent to? AV node (atrioventricular node)
impulse is slowed (gatekeeper to ventricles allowing
what occurs at the AV node?
40-60 impulses a minute)
Bundle of His (AV bundle branch) to the right and left
after the AV node where is the electric signal sent to?
bundle branches
what is the role of the bundle branches? carry impulses to the tips of the ventricles
what is unique about the bundle of his (AV bundle) have special cells for electrical conduction
where does the electric signal go after the bundle branch-
purkinjie fibers
es?
carry impulse to individual myocardial cells that result in
what is the role of purkinjie fibers?
the contraction of the ventricles
ECG electrocardiogram
graphical representation of the electrical activity of the
what is an ECG?
heart
ventricular depolarization
What is the QRS complex? Q: 1st negative deflection
R: 1st upward deflection
S: rest of complex
What is the PR interval? blood flowing from atrium to ventricles
rest period between depression and re polarization (re-
What is the ST segment?
laxation)
what does it mean that ventricles and atria are 180 de-
atria contract while ventricles relax
grees out of phase?
why is repolarization of atria not seen on an ECG? covered by the QRS complex
CORRECT Answers
where does the heart rest?
what is a cardiac cycle?
what is the sac surrounding the heart?
what are the three layers of the heart?
what are the 4 chambers of the heart?
where is the tricuspid valve?
where is the mitral valve located?
Where does deoxygenated blood enter the heart?
what is ventricular diastole?
what is ventricular systole?
Where oxygen and carbon dioxide are exchanged
where does oxygenated blood enter?
where does the blood enter during ventricular systole?
what areas of the heart does the right coronary artery
supply?
where does the left coronary artery go and supply blood
to?
what is systemic circulation?
, mediastinu returns deoxygenated blood to the heart
m period from one heart contraction (systole) to the next
pericardiu
m
the epicardium (external layer), the myocardium
(middlelayer) and the endocardium (inner layer).
left atrium, right atrium, left ventricle, right ventricle
between right atrium and right ventricle
between left atrium and left ventricle
right atrium from superior and inferior vena cava
relaxation/filling stages, where the tricuspid valve
opens and allows blood to flow from the right atrium to
the rightventricle
contraction of ventricles where blood exits the right
ven-tricle through the pulmonary valve into the
pulmonary arteries then to the lungs
alveoli (blood becomes 02 rich)
left atrium through the pulmonary veins to the mitral
valveto the left ventricle (during diastole)
into systemic circulation through the aortic valve then
tothe aorta to the body
posterior descending artery (PDA) and posterior and
in-ferior area of myocardium
branches into left anterior descending and left
circumflexartery, provides blood to septal and anterior
myocardial wall
oxygenated blood away from the heart to the body and
, what does the electrical impulse in the heart do? initiates contraction starting at the SA node
where is the SA node and what is its role? in the right atrium and is the pacemaker of the heart
after the SA node where is the electric signal sent to? AV node (atrioventricular node)
impulse is slowed (gatekeeper to ventricles allowing
what occurs at the AV node?
40-60 impulses a minute)
Bundle of His (AV bundle branch) to the right and left
after the AV node where is the electric signal sent to?
bundle branches
what is the role of the bundle branches? carry impulses to the tips of the ventricles
what is unique about the bundle of his (AV bundle) have special cells for electrical conduction
where does the electric signal go after the bundle branch-
purkinjie fibers
es?
carry impulse to individual myocardial cells that result in
what is the role of purkinjie fibers?
the contraction of the ventricles
ECG electrocardiogram
graphical representation of the electrical activity of the
what is an ECG?
heart
ventricular depolarization
What is the QRS complex? Q: 1st negative deflection
R: 1st upward deflection
S: rest of complex
What is the PR interval? blood flowing from atrium to ventricles
rest period between depression and re polarization (re-
What is the ST segment?
laxation)
what does it mean that ventricles and atria are 180 de-
atria contract while ventricles relax
grees out of phase?
why is repolarization of atria not seen on an ECG? covered by the QRS complex
