#1
Which blood vessel carries oxygenated blood away from the heart?
Vein
Artery
Capillary
Vena cava
#2
What is the main function of capillaries in the cardiovascular system?
To carry blood away from the heart
To exchange nutrients and waste with tissues
To store excess blood
To regulate blood pressure
#3
Which of the following is NOT a component of blood?
Plasma
Platelets
Enzymes
Red blood cells
#4
What is the function of the sinoatrial (SA) node in the heart?
To regulate blood pressure
To conduct electrical signals to the ventricles
To initiate the heartbeat
To filter impurities from the blood
#5
Which of the following is NOT a type of blood vessel?
Artery
Vein
Capillary
Ventricle
#6
What is the name of the largest artery in the human body?
Aorta
Pulmonary artery
Carotid artery
Femoral artery
#7
Which of the following vessels carries deoxygenated blood back to the heart?
Vein
Artery
Pulmonary vein
Aorta
#8
Which of the following is NOT a major artery in the human body?
Aorta
Carotid artery
Coronary artery
Pulmonary vein
#9
What is the name of the valve that separates the left atrium from the left ventricle in the heart?
Tricuspid valve
Mitral valve
Aortic valve
Pulmonary valve
#10
Which blood vessel carries deoxygenated blood from the heart to the lungs?
Vein
Artery
Pulmonary artery
Vena cava
#11
Which of the following is a function of the endothelium in blood vessels?
Regulation of blood pressure
Transport of oxygen
Production of red blood cells
Formation of blood clots
#12
Which of the following is a symptom of a heart attack?
Chest pain or discomfort
Increased appetite
Decreased heart rate
Clear urine
#13
What is the function of hemoglobin in red blood cells?
To transport oxygen
To fight infection
To produce energy
To regulate blood pressure
#14
What is the main function of veins in the cardiovascular system?
To carry blood away from the heart
To exchange nutrients and waste with tissues
To regulate blood pressure
To carry blood back to the heart
#15
Which of the following is NOT a risk factor for cardiovascular diseases?
High blood pressure
Regular exercise
Obesity
Smoking
#16
What is the term for the condition in which fatty deposits accumulate in the inner lining of arteries?
Atherosclerosis
Hypertension
Arrhythmia
Embolism
#17
Which of the following statements about blood pressure is correct?
Systolic pressure is the pressure in the arteries when the heart relaxes
Diastolic pressure is the top number in a blood pressure reading
Normal blood pressure is considered to be below 140/90 mmHg
Hypertension is defined as consistently low blood pressure
#18
What is the term for the process of blood clot formation?
Hemostasis
Hematopoiesis
Hemoglobin
Hemolysis
#19
Which of the following is NOT a type of white blood cell?
Neutrophil
Erythrocyte
Lymphocyte
Monocyte