#1
Which chamber of the heart receives deoxygenated blood from the body?
Right Atrium
ExplanationRight Atrium receives deoxygenated blood from the body.
#2
What is the primary function of the circulatory system in the human body?
Transport of oxygen and nutrients
ExplanationThe circulatory system's primary function is to transport oxygen and nutrients.
#3
Which chamber of the heart pumps blood to the systemic circulation (to the body)?
Left Ventricle
ExplanationLeft Ventricle pumps blood to the systemic circulation.
#4
Which blood vessel carries deoxygenated blood from the heart to the lungs for oxygenation?
Pulmonary Artery
ExplanationPulmonary Artery carries deoxygenated blood from the heart to the lungs.
#5
What is the average resting heart rate for adults?
60-80 beats per minute
ExplanationThe average resting heart rate for adults is 60-80 beats per minute.
#6
Which component of blood is responsible for transporting oxygen?
Red Blood Cells
ExplanationRed Blood Cells are responsible for transporting oxygen.
#7
What is the main function of the heart valves?
To prevent backflow of blood
ExplanationHeart valves prevent backflow of blood to maintain unidirectional flow.
#8
In which blood vessels does the exchange of oxygen and carbon dioxide take place?
Capillaries
ExplanationCapillaries facilitate the exchange of oxygen and carbon dioxide.
#9
What is the term for the volume of blood ejected by one ventricle during a heartbeat?
Stroke Volume
ExplanationStroke Volume is the volume of blood ejected by one ventricle during a heartbeat.
#10
Which part of the heart initiates the heartbeat by generating electrical impulses?
Sinoatrial Node (SA Node)
ExplanationSA Node initiates the heartbeat by generating electrical impulses.
#11
Which blood vessel carries oxygenated blood from the lungs to the heart?
Pulmonary Vein
ExplanationPulmonary Vein carries oxygenated blood from the lungs to the heart.
#12
What is the role of hemoglobin in the blood?
Transport of oxygen
ExplanationHemoglobin in the blood is responsible for the transport of oxygen.
#13
What is the term for the contraction phase of the heart's pumping action?
Systole
ExplanationSystole is the contraction phase of the heart's pumping action.
#14
Which artery supplies oxygenated blood to the heart muscle itself?
Coronary Artery
ExplanationCoronary Artery supplies oxygenated blood to the heart muscle.
#15
Which of the following factors contributes to the development of atherosclerosis?
Inflammation of blood vessels
ExplanationInflammation of blood vessels contributes to atherosclerosis.
#16
What is the purpose of the heart's semilunar valves?
Prevent backflow into the ventricles
ExplanationSemilunar valves prevent backflow into the ventricles.
#17
What is the medical term for a heart attack?
Myocardial Infarction
ExplanationMyocardial Infarction is the medical term for a heart attack.
#18
What is the function of the pericardium in the heart?
Protect and lubricate the heart
ExplanationPericardium protects and lubricates the heart.