#1
Which of the following is not a component of the cardiovascular system?
Kidneys
ExplanationKidneys are part of the renal system, not the cardiovascular system.
#2
What is the average resting heart rate for adults?
60-80 beats per minute
ExplanationThe normal resting heart rate for adults ranges from 60 to 80 beats per minute.
#3
What is the term for the smallest blood vessels in the body?
Capillaries
ExplanationCapillaries are the smallest blood vessels where exchange of nutrients and waste occurs.
#4
What is the name of the large artery that carries oxygen-rich blood away from the heart to the rest of the body?
Aorta
ExplanationThe aorta is the large artery that carries oxygenated blood away from the heart to the systemic circulation.
#5
What is the main function of white blood cells in the body?
Fight infections
ExplanationWhite blood cells play a crucial role in the immune system by fighting infections and foreign invaders.
#6
Which blood vessels carry blood away from the heart?
Arteries
ExplanationArteries carry oxygenated blood away from the heart to the rest of the body.
#7
What is the name of the valve located between the left atrium and left ventricle?
Mitral valve
ExplanationThe mitral valve is situated between the left atrium and left ventricle of the heart.
#8
Which chamber of the heart receives oxygen-rich blood from the lungs?
Left atrium
ExplanationThe left atrium receives oxygenated blood from the lungs before pumping it to the rest of the body.
#9
Which of the following is not a risk factor for cardiovascular disease?
Regular exercise
ExplanationRegular exercise is a protective factor and reduces the risk of cardiovascular disease.
#10
Which of the following is responsible for the contraction of the heart muscle?
Purkinje fibers
ExplanationPurkinje fibers are specialized cardiac muscle fibers responsible for heart muscle contraction.
#11
What is the term for the condition characterized by high blood pressure?
Hypertension
ExplanationHypertension refers to the medical condition of high blood pressure.
#12
What is the term for the formation of a blood clot within a blood vessel?
Thrombosis
ExplanationThrombosis is the formation of a blood clot within a blood vessel, potentially causing blockage.
#13
Which of the following hormones regulates blood pressure and volume?
Aldosterone
ExplanationAldosterone plays a role in regulating blood pressure and volume by influencing sodium and water balance.