#1
Which chamber of the heart receives oxygen-rich blood from the lungs?
Left atrium
Right atrium
Left ventricle
Right ventricle
#2
What is the function of the heart valve?
To regulate blood pressure
To produce red blood cells
To prevent the backflow of blood
To control heart rate
#3
What is the approximate resting heart rate of an average adult?
50-60 beats per minute
70-80 beats per minute
90-100 beats per minute
110-120 beats per minute
#4
Which blood vessel carries deoxygenated blood from the heart to the lungs for oxygenation?
Aorta
Pulmonary artery
Pulmonary vein
Vena cava
#5
Which of the following is NOT a valve of the heart?
Tricuspid valve
Bicuspid valve
Pulmonary valve
Aortic valve
#6
Which of the following is not a major blood vessel connected to the heart?
Aorta
Vena cava
Pulmonary vein
Esophagus
#7
What is the sinoatrial node (SA node) responsible for?
Generating electrical impulses to regulate heart rhythm
Transporting oxygenated blood to the body
Producing white blood cells
Storing excess glucose
#8
What is the term for the relaxation phase of the heart cycle?
Systole
Diastole
Arrhythmia
Bradycardia
#9
Which artery supplies oxygenated blood to the heart muscle itself?
Coronary artery
Pulmonary artery
Carotid artery
Femoral artery
#10
What is the term for the network of specialized cells that conduct electrical impulses through the heart?
Bundle of His
Purkinje fibers
Tendinous cords
Chordae tendineae
#11
Which layer of the heart wall is responsible for the heart's contraction?
Endocardium
Myocardium
Pericardium
Epicardium
#12
Which part of the brain controls heart rate and rhythm?
Cerebellum
Cerebrum
Hypothalamus
Medulla oblongata
#13
What is the term for the condition where fatty deposits build up in the arteries, restricting blood flow?
Atherosclerosis
Arteriosclerosis
Thrombosis
Embolism
#14
Which of the following is NOT a function of the pericardium?
Protecting the heart from infection
Preventing overfilling of the heart with blood
Producing hormones for heart regulation
Reducing friction between the heart and surrounding organs
#15
What is the medical term for the condition commonly known as a 'heart attack'?
Myocardial infarction
Angina pectoris
Arrhythmia
Aortic dissection