The Heart

What is the main function of the heart?
Pumping blood throughout the body
Digesting food
Producing hormones
Filtering waste
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
Right atrium
Left ventricle
Right ventricle
What is the average resting heart rate for adults?
60-80 beats per minute
100-120 beats per minute
40-60 beats per minute
80-100 beats per minute
Which blood vessels carry oxygenated blood away from the heart?
Arteries
Veins
Capillaries
Lymphatic vessels
What is the medical term for a heart attack?
Myocardial infarction
Arrhythmia
Atherosclerosis
Angina pectoris
Which of the following factors can increase the risk of developing heart disease?
Smoking
High blood pressure
Regular exercise
Low cholesterol levels
What is the name of the valve that separates the left atrium from the left ventricle?
Mitral valve
Tricuspid valve
Aortic valve
Pulmonary valve
How many chambers does the human heart have?
Four
Two
Five
Three
What is the medical term for an abnormally fast heart rate?
Tachycardia
Bradycardia
Arrhythmia
Hypertension
Which of the following is responsible for initiating the electrical signals that regulate the heartbeat?
Sinoatrial (SA) node
Atrioventricular (AV) node
Bundle of His
Purkinje fibers
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