#1
Which chamber of the heart receives oxygen-rich blood from the lungs?
Right atrium
Left atrium
Right ventricle
Left ventricle
#2
What is the main function of arteries in the cardiovascular system?
To carry blood away from the heart
To carry blood towards the heart
To exchange gases with tissues
To control blood pressure
#3
Which of the following blood vessels carries oxygenated blood from the heart to the rest of the body?
Aorta
Pulmonary artery
Pulmonary vein
Vena cava
#4
What is the function of the atrioventricular (AV) node in the heart?
To regulate heart rate
To conduct electrical signals from the atria to the ventricles
To carry oxygen-rich blood to the body
To carry deoxygenated blood from the body to the heart
#5
What is the primary function of the cardiovascular system?
Transporting nutrients
Producing hormones
Regulating body temperature
Providing structural support
#6
Which of the following is not a component of blood?
Red blood cells
White blood cells
Platelets
Lymphocytes
#7
What is the name of the valve located between the left atrium and left ventricle?
Tricuspid valve
Pulmonary valve
Aortic valve
Mitral valve
#8
What is the term for the contraction phase of the heart muscle?
Diastole
Systole
Atrioventricular
Cardiac cycle
#9
Which blood vessel carries oxygen-rich blood from the lungs to the heart?
Pulmonary artery
Pulmonary vein
Aorta
Vena cava
#10
What is the role of the sinoatrial (SA) node in the heart?
To regulate blood pressure
To conduct electrical signals to the atria
To conduct electrical signals to the ventricles
To regulate heart rate
#11
Which of the following is not a risk factor for cardiovascular disease?
High blood pressure
Regular exercise
Smoking
High cholesterol levels
#12
Which vessel carries deoxygenated blood from the heart to the lungs?
Pulmonary artery
Pulmonary vein
Aorta
Vena cava
#13
What is the name of the largest artery in the human body?
Pulmonary artery
Carotid artery
Aorta
Femoral artery
#14
Which of the following hormones regulates blood pressure?
Insulin
Estrogen
Aldosterone
Growth hormone
#15
What is the medical term for a heart attack?
Myocardial infarction
Atherosclerosis
Arrhythmia
Coronary thrombosis
#16
What is the function of the pericardium?
To prevent blood clotting
To regulate blood pressure
To provide lubrication for the heart
To produce red blood cells
#17
Which condition is characterized by an abnormal heart rhythm?
Aneurysm
Arrhythmia
Angina
Atherosclerosis