#1
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
ExplanationReceives oxygen-rich blood from the lungs.
#2
What is the main function of red blood cells?
To transport oxygen
ExplanationTransport oxygen throughout the body.
#3
Which of the following is NOT a major type of blood vessel?
Sinus
ExplanationSinus is not a major blood vessel type.
#4
What is the average heart rate of a healthy adult at rest?
80-100 beats per minute
ExplanationNormal resting heart rate range.
#5
Which chamber of the heart pumps oxygenated blood to the rest of the body?
Left ventricle
ExplanationPumps oxygenated blood to the body.
#6
What is the primary function of the cardiovascular system?
All of the above
ExplanationPerforms various vital functions in the body.
#7
Which blood vessel carries oxygen-rich blood away from the heart to the body?
Artery
ExplanationCarries oxygenated blood to the body.
#8
What is the name of the valve that prevents the backflow of blood from the left ventricle to the left atrium?
Mitral valve
ExplanationPrevents backflow between left ventricle and atrium.
#9
What is the pacemaker of the heart called?
Sinoatrial node (SA node)
ExplanationRegulates heart rhythm.
#10
Which blood vessel carries deoxygenated blood from the body back to the heart?
Vein
ExplanationCarries deoxygenated blood back to the heart.
#11
Which of the following is NOT a component of the intrinsic conduction system of the heart?
Coronary artery
ExplanationCoronary artery is not part of the conduction system.
#12
Which vessel carries blood from the heart to the lungs for oxygenation?
Pulmonary artery
ExplanationTransports blood to the lungs for oxygenation.
#13
Which component of the blood is responsible for clotting?
Platelets
ExplanationResponsible for blood clotting.
#14
What is the medical term for a heart attack?
Myocardial infarction
ExplanationCommonly known as a heart attack.
#15
What is the medical term for high blood pressure?
Hypertension
ExplanationClinical term for high blood pressure.
#16
What is the medical term for a weakened area in an artery wall that can balloon out and burst?
Aneurysm
ExplanationClinical term for weakened artery.
#17
Which of the following is NOT a risk factor for cardiovascular disease?
Low cholesterol levels
ExplanationLow cholesterol levels are not a risk.
#18
Which of the following is a function of the lymphatic system in relation to the cardiovascular system?
Returning excess interstitial fluid to the bloodstream
ExplanationRole in returning excess fluid to blood.