#1
Which of the following is a risk factor for cardiovascular disease?
High blood pressure
ExplanationElevated blood pressure increases strain on the heart and blood vessels, raising the risk of cardiovascular problems.
#2
What is the average resting heart rate for adults?
60-100 beats per minute
ExplanationThis range is considered normal for adults at rest, indicating healthy heart function.
#3
Which of the following is NOT a primary component of blood?
Cholesterol
ExplanationCholesterol is not a primary component of blood but rather a lipid carried within it, playing a role in various bodily functions.
#4
What is the name of the valve located between the left atrium and the left ventricle?
Mitral valve
ExplanationAlso known as the bicuspid valve, it prevents the backflow of blood from the left ventricle to the left atrium.
#5
Which of the following is a function of the cardiovascular system?
Transportation of nutrients and oxygen
ExplanationThe cardiovascular system circulates blood throughout the body, delivering oxygen, nutrients, and hormones to cells while removing waste products.
#6
What is the medical term for high blood pressure?
Hypertension
ExplanationHypertension is a condition characterized by elevated blood pressure, increasing the risk of heart disease and stroke.
#7
Which of the following vessels carries oxygenated blood from the lungs to the heart?
Pulmonary vein
ExplanationContrary to other veins, the pulmonary vein transports oxygen-rich blood from the lungs back to the heart.
#8
What is the medical term for a heart attack?
Myocardial infarction
ExplanationThis occurs when blood flow to a part of the heart is blocked, causing damage to the heart muscle.
#9
What is the function of the atrioventricular node (AV node) in the heart?
To conduct electrical impulses between the atria and ventricles
ExplanationThe AV node coordinates the timing of contractions between the heart's upper and lower chambers.
#10
Which of the following is a symptom of peripheral artery disease (PAD)?
Leg cramping or pain during walking
ExplanationPAD restricts blood flow to the limbs, causing discomfort, particularly during physical activity.
#11
What is the term for a condition characterized by irregular heartbeats?
Arrhythmia
ExplanationArrhythmia refers to abnormal heart rhythms, which can be too fast, too slow, or irregular.
#12
What is the term for the condition in which the heart muscle doesn't receive enough blood flow?
Angina pectoris
ExplanationAngina causes chest pain or discomfort due to reduced blood flow to the heart muscles.
#13
Which of the following substances can contribute to the development of atherosclerosis?
Low-density lipoprotein (LDL)
ExplanationLDL cholesterol can accumulate in the arteries, leading to plaque formation and narrowing, a key factor in atherosclerosis.
#14
What is the term for the condition where the heart's electrical signals are chaotic, causing rapid, irregular heartbeats?
Ventricular fibrillation
ExplanationVF is a life-threatening arrhythmia where the heart's lower chambers quiver instead of pumping blood effectively, leading to cardiac arrest.