#1
Which chamber of the heart receives oxygenated blood from the lungs?
Right atrium
Left atrium
Right ventricle
Left ventricle
#2
Which blood vessel carries oxygen-rich blood away from the heart to the body?
Pulmonary artery
Pulmonary vein
Aorta
Vena cava
#3
What is the term for the relaxation phase of the cardiac cycle?
Systole
Diastole
Tachycardia
Bradycardia
#4
Which of the following blood vessels carries deoxygenated blood back to the heart?
Aorta
Pulmonary artery
Pulmonary vein
Vena cava
#5
Which of the following statements about blood pressure is true?
Systolic pressure is the pressure in the arteries during heart relaxation.
Diastolic pressure is the top number in a blood pressure reading.
Hypertension is defined as systolic pressure below 90 mm Hg.
Blood pressure is measured in millimeters of mercury (mm Hg).
#6
What is the medical term for high blood pressure?
Hypertension
Hypotension
Tachycardia
Bradycardia
#7
Which valve separates the left atrium from the left ventricle?
Aortic valve
Mitral valve
Pulmonary valve
Tricuspid valve
#8
What is the medical term for a heart attack?
Myocarditis
Atrial fibrillation
Angina pectoris
Myocardial infarction
#9
What is the main function of the coronary arteries?
To carry oxygenated blood away from the heart
To regulate blood pressure in the heart chambers
To supply oxygen and nutrients to the heart muscle
To remove waste products from the heart
#10
Which of the following is NOT a risk factor for cardiovascular disease?
High blood pressure
Regular exercise
Smoking
High cholesterol
#11
Which of the following conditions is characterized by an irregular heart rhythm?
Atherosclerosis
Arrhythmia
Hypertension
Embolism
#12
What is the term for the largest artery in the human body?
Pulmonary artery
Aorta
Coronary artery
Carotid artery
#13
Which layer of the heart wall is responsible for its contraction?
Endocardium
Myocardium
Epicardium
Pericardium
#14
Which of the following is responsible for the electrical stimulation of the heart?
Atrioventricular node (AV node)
Purkinje fibers
Sinoatrial node (SA node)
Bundle of His