#1
Which blood vessel carries oxygen-rich blood away from the heart to the rest of the body?
Artery
ExplanationCarries oxygenated blood away from the heart.
#2
What is the main function of the cardiovascular system?
To provide oxygen to cells and remove waste products
ExplanationProvides oxygen and removes waste from cells.
#3
What is the term for the force exerted by circulating blood against the walls of blood vessels?
Blood pressure
ExplanationForce exerted on vessel walls.
#4
Which blood vessel carries deoxygenated blood from the body back to the heart?
Vein
ExplanationCarries deoxygenated blood to heart.
#5
Where does gas exchange occur in the circulatory system?
Capillaries
ExplanationGas exchange occurs in capillaries.
#6
Which of the following is NOT a component of the circulatory system?
Brain
ExplanationBrain is not a part of the circulatory system.
#7
What is the medical term for the smallest type of blood vessel in the body?
Capillary
ExplanationSmallest blood vessel for gas exchange.
#8
What is the name of the valve located between the left atrium and the left ventricle?
Mitral valve
ExplanationValve between left atrium and ventricle.
#9
Which of the following is a risk factor for cardiovascular disease?
High blood pressure
ExplanationHigh pressure in blood vessels.
#10
Which of the following is NOT a function of blood in the circulatory system?
Regulating body temperature
ExplanationBlood does not regulate temperature.
#11
Which chamber of the heart pumps oxygenated blood to the rest of the body?
Left ventricle
ExplanationPumps oxygenated blood to the body.
#12
What is the medical term for a heart attack?
Myocardial infarction
ExplanationHeart muscle death due to lack of blood flow.
#13
What is the term for the abnormal heart rhythm characterized by rapid, irregular contractions of the atria?
Fibrillation
ExplanationRapid, irregular atrial contractions.
#14
Which of the following statements about the heart's electrical conduction system is true?
The Bundle of His is responsible for delaying the transmission of electrical impulses.
ExplanationBundle of His delays electrical impulses.