#1
Which of the following is not a major component of the cardiovascular system?
Brain
ExplanationThe brain is not a component of the cardiovascular system.
#2
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
ExplanationThe left atrium receives oxygenated blood from the lungs.
#3
What is the average adult resting heart rate?
60-80 beats per minute
ExplanationThe average adult resting heart rate is 60-80 beats per minute.
#4
Which of the following is responsible for carrying deoxygenated blood back to the heart?
Veins
ExplanationVeins carry deoxygenated blood back to the heart.
#5
What is the medical term for high blood pressure?
Hypertension
ExplanationHypertension is the medical term for high blood pressure.
#6
Which blood vessels carry oxygenated blood away from the heart?
Arteries
ExplanationArteries carry oxygenated blood away from the heart.
#7
What is the term for the relaxation phase of the cardiac cycle?
Diastole
ExplanationDiastole is the term for the relaxation phase of the cardiac cycle.
#8
Which of the following is NOT a risk factor for cardiovascular disease?
Regular exercise
ExplanationRegular exercise is not a risk factor for cardiovascular disease.
#9
Which hormone is released by the adrenal glands during the 'fight or flight' response, increasing heart rate and blood pressure?
Adrenaline
ExplanationAdrenaline is released during 'fight or flight,' increasing heart rate and blood pressure.
#10
What is the function of the sinoatrial (SA) node in the heart?
To conduct electrical impulses
ExplanationThe SA node conducts electrical impulses in the heart.
#11
What condition is characterized by the accumulation of plaque in the arteries, leading to reduced blood flow?
Atherosclerosis
ExplanationAtherosclerosis is characterized by plaque accumulation, reducing blood flow in arteries.
#12
What is the name of the valve that separates the left ventricle from the aorta?
Aortic valve
ExplanationThe aortic valve separates the left ventricle from the aorta.