#1
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
ExplanationReceives oxygenated blood from the lungs.
#2
What is the medical term for the outer layer of the heart?
Epicardium
ExplanationOuter layer of the heart.
#3
Which heart chamber pumps blood to the systemic circulation?
Left ventricle
ExplanationPumps blood to the systemic circulation.
#4
What is the term for the layer of cells that lines the interior of blood vessels and the heart chambers?
Endocardium
ExplanationLayer of cells lining blood vessels and heart chambers.
#5
Which heart chamber receives deoxygenated blood from the body?
Right atrium
ExplanationReceives deoxygenated blood from the body.
#6
Which artery supplies oxygenated blood to the heart muscle?
Coronary artery
ExplanationSupplies oxygenated blood to the heart muscle.
#7
Which artery supplies oxygenated blood to the heart muscle itself?
Coronary artery
ExplanationSupplies oxygenated blood to the heart muscle.
#8
What is the term for a rapid and irregular heart rhythm?
Fibrillation
ExplanationRapid and irregular heart rhythm.
#9
What is the term for the relaxation phase of the cardiac cycle?
Diastole
ExplanationRelaxation phase of the cardiac cycle.
#10
Which structure divides the left and right sides of the heart?
Interventricular septum
ExplanationDivides left and right sides of the heart.
#11
Which vein returns blood from the lower body to the right atrium of the heart?
Inferior vena cava
ExplanationReturns blood from lower body to right atrium.
#12
What is the medical term for an abnormally slow heart rate?
Bradycardia
ExplanationMedical term for an abnormally slow heart rate.
#13
Which valve separates the left atrium from the left ventricle?
Mitral valve
ExplanationSeparates left atrium from left ventricle.
#14
What is the medical term for a heart attack?
Myocardial infarction
ExplanationMedical term for a heart attack.
#15
Which coronary artery is often referred to as the 'widow-maker'?
Left main coronary artery
ExplanationReferred to as the 'widow-maker'.
#16
What is the term for a congenital defect where there is a hole between the heart's chambers?
Ventricular septal defect
ExplanationCongenital defect with a hole between heart chambers.
#17
Which valve prevents the backflow of blood from the left ventricle into the left atrium?
Mitral valve
ExplanationPrevents backflow from left ventricle to left atrium.
#18
What is the term for a congenital heart condition where the aorta and pulmonary artery are switched?
Transposition of the great vessels
ExplanationCongenital condition with switched aorta and pulmonary artery.