#1
Which of the following is not a major component of the cardiovascular system?
Brain
ExplanationThe brain is not a part of the cardiovascular system.
#2
What is the primary function of the heart in the cardiovascular system?
To pump blood throughout the body
ExplanationThe heart's main role is to circulate blood to all parts of the body.
#3
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
ExplanationThe left atrium receives oxygenated blood from the lungs.
#4
Which of the following blood vessels carries oxygenated blood away from the heart?
Aorta
ExplanationThe aorta carries oxygenated blood away from the heart.
#5
What is the medical term for high blood pressure?
Hypertension
ExplanationHigh blood pressure is medically termed hypertension.
#6
Which of the following conditions is NOT considered a cardiovascular disease?
Diabetes
ExplanationDiabetes is not classified as a cardiovascular disease.
#7
What is the term for the measurement of pressure exerted by blood against the walls of the arteries?
Blood pressure
ExplanationBlood pressure measures the force of blood on artery walls.
#8
What is the medical term for a heart attack?
Myocardial infarction
ExplanationA heart attack is medically known as myocardial infarction.
#9
What is the term for the condition characterized by an irregular heart rhythm?
Arrhythmia
ExplanationArrhythmia refers to an irregular heart rhythm.
#10
What is the function of the sinoatrial (SA) node in the heart?
To generate electrical impulses
ExplanationThe SA node generates electrical impulses to regulate heartbeats.
#11
Which of the following is NOT a risk factor for cardiovascular disease?
Regular exercise
ExplanationRegular exercise is not a risk factor for cardiovascular disease.
#12
Which of the following substances is primarily responsible for the hardening and narrowing of arteries?
Cholesterol
ExplanationCholesterol is a major factor in the hardening and narrowing of arteries.