#1
Which chamber of the heart pumps oxygenated blood to the rest of the body?
Left ventricle
ExplanationLeft ventricle pumps oxygenated blood to the body.
#2
What is the primary function of the cardiovascular system?
Transportation of oxygen
ExplanationCardiovascular system primarily transports oxygen.
#3
What is the average resting heart rate for adults?
60-80 beats per minute
ExplanationAverage resting heart rate for adults is 60-80 bpm.
#4
Which of the following factors is a major risk factor for cardiovascular diseases?
High blood pressure
ExplanationHigh blood pressure is a major risk factor.
#5
What is the function of the sinoatrial (SA) node in the heart?
Initiating the heartbeat
ExplanationSA node initiates the heartbeat.
#6
Which condition is characterized by the accumulation of fatty deposits on arterial walls?
Atherosclerosis
ExplanationAtherosclerosis involves fatty deposits on arterial walls.
#7
Which of the following is NOT a component of the systemic circulation?
Pulmonary artery
ExplanationPulmonary artery is not part of systemic circulation.
#8
Which blood vessel carries deoxygenated blood from the body back to the heart?
Superior vena cava
ExplanationSuperior vena cava returns deoxygenated blood to the heart.
#9
What is the main component of blood responsible for clotting?
Platelets
ExplanationPlatelets are key for blood clotting.
#10
In which blood vessels does the exchange of nutrients and gases occur with the body's tissues?
Capillaries
ExplanationExchange of nutrients and gases occurs in capillaries.
#11
What is the medical term for a heart attack?
Myocardial infarction
ExplanationHeart attack is termed as myocardial infarction.
#12
What is the role of hemoglobin in the blood?
Transporting oxygen
ExplanationHemoglobin transports oxygen in the blood.
#13
Which vessel carries oxygenated blood from the lungs to the heart?
Pulmonary vein
ExplanationPulmonary vein carries oxygenated blood from lungs to heart.
#14
Which part of the heart's conduction system delays the electrical impulses, allowing the atria to contract before the ventricles?
Atrioventricular (AV) node
ExplanationAV node delays impulses, allowing atria to contract before ventricles.
#15
Which valve separates the left atrium from the left ventricle in the heart?
Bicuspid valve
ExplanationBicuspid valve separates left atrium from left ventricle.
#16
Which hormone is released by the heart in response to increased blood volume and pressure?
Atrial natriuretic peptide (ANP)
ExplanationHeart releases ANP in response to increased blood volume and pressure.
#17
What is the purpose of the pericardium in the heart?
Protecting and lubricating the heart
ExplanationPericardium protects and lubricates the heart.
#18
Which of the following is a symptom of angina pectoris?
All of the above
ExplanationAll listed are symptoms of angina pectoris.
#19
What is the role of the autonomic nervous system in regulating heart rate?
Both increasing and decreasing heart rate
ExplanationAutonomic nervous system regulates heart rate by both increasing and decreasing it.