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PMSC12004 Exam Latest Update
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PMSC12004 Exam LatestUpdate
Which term is commonly used to describe the inner layer of the pericardium, which
covers the heart itself?
A - Endocardium
B - Epicardium
C - Myocardium
D - Pericardium - Answer B - Epicardium
The ________ side of the heart pumps blood into the _______ circulation, and the _______
side of the heart pumps blood into the ________ circulation
A - Left; pulmonary; right; systemic
B - Left; ventricular; right; atrial
C - Right; pulmonary; left; system
D - Right; systemic; Left; pulmonary - Answer C - Right; pulmonary; left; system
The right ventricle pumps deoxygenated blood through the _______ valve and into the
lungs through the _______ artery
A - aortic; mitral
B - Mitral; tricuspid
C - pulmonary; pulmonary
D - tricuspid; pulmonary - Answer C - pulmonary; pulmonary
Which term best describes the period during which the heart relaxes and ventricles fill
with blood?
A - Atrial diastole
B - Atrial systole
C - Ventricular diastole
, D - Ventricular systole - Answer C - Ventricular diastole
Which structure is a normal component of the heart's electrical conduction system?
A - Atrial septa
B - Coronary sinus
C - Right bundle branch
D - Vagus nerve - Answer C - Right bundle branch
Which term best describes the ability of cardiac cells to depolarise spontaneously?
A - Automaticity
B - Conductivity
C - Contractility
D - Self-excitation - Answer A - Automaticity
In the resting state, a myocardial cell has a high concentration of the _______ charged
________ ions present outside the cell.
A - Negatively; potassium
B - Negatively; sodium
C - Positively; potassium
D - positively; sodium - Answer D - positively; sodium
Cardiac cells cannot be stimulated to depolarise during which part of the cardiac cycle?
A - absolute refractory period
B - Ectopic period
C - Relative refractory period
D - Resting state - Answer A - absolute refractory period
Which term best describes the normal and dominant pacemaker of the heart?
A - AV node
B - Bundle of His
C - Purkinje fibers
D - SA node - Answer D - SA node
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