#1
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
Right atrium
Left ventricle
Right ventricle
#2
What is the average resting heart rate for adults?
50-60 beats per minute
70-80 beats per minute
90-100 beats per minute
110-120 beats per minute
#3
Which of the following is not a function of the cardiovascular system?
Transporting nutrients and oxygen to cells
Regulating body temperature
Removing waste products from cells
Assisting in immune response
#4
Which of the following is a symptom of a heart attack?
Sudden blurred vision
Persistent coughing
Sudden chest pain or discomfort
Nausea after meals
#5
Which of the following is not a risk factor for hypertension?
Age
Gender
Obesity
High salt intake
#6
Which of the following is not a component of blood?
Plasma
Platelets
Erythrocytes
Neutrophils
#7
What is the term for the upper and lower chambers of the heart?
Ventricles and atria
Ventricles and valves
Atria and valves
Atria and ventricles
#8
Which blood vessels carry oxygenated blood away from the heart?
Veins
Arteries
Capillaries
Venules
#9
What is the term for the volume of blood pumped by each ventricle per minute?
Stroke volume
Cardiac output
End-diastolic volume
Pulse pressure
#10
What is the role of the sinoatrial (SA) node in the heart?
Conduction of electrical signals
Pumping blood to the body
Filtering oxygen from the blood
Regulating blood pressure
#11
Which component of blood is responsible for clotting?
Red blood cells
White blood cells
Platelets
Plasma
#12
Which of the following is responsible for carrying deoxygenated blood from the body to the heart?
Pulmonary artery
Pulmonary vein
Superior vena cava
Inferior vena cava
#13
Which of the following statements about the sinoatrial (SA) node is true?
It is located in the ventricles of the heart.
It is also known as the pacemaker of the heart.
It carries deoxygenated blood to the lungs.
It regulates blood pressure.
#14
What is the term for the abnormal heart rhythm that is too slow?
Tachycardia
Bradycardia
Arrhythmia
Atrial fibrillation
#15
What is the term for the process by which white blood cells move to sites of tissue damage or infection?
Diapedesis
Hematopoiesis
Phagocytosis
Chemotaxis
#16
Which of the following hormones is released in response to stress and increases heart rate?
Insulin
Epinephrine
Aldosterone
Growth hormone
#17
Which of the following conditions is characterized by a rapid and irregular heart rhythm?
Tachycardia
Bradycardia
Atrial fibrillation
Atrial flutter
#18
Which of the following is the correct pathway of blood flow through the heart?
Right atrium → left atrium → right ventricle → left ventricle
Right atrium → right ventricle → left atrium → left ventricle
Left atrium → right atrium → left ventricle → right ventricle
Left atrium → left ventricle → right atrium → right ventricle
#19
Which of the following is not a risk factor for cardiovascular disease?
High blood pressure
Regular exercise
Obesity
Smoking
#20
What is the function of the mitral valve in the heart?
Preventing backflow of blood into the left atrium
Controlling blood flow to the lungs
Regulating blood pressure
Supplying oxygen to the heart muscle
#21
In which part of the cardiovascular system does gas exchange occur?
Arteries
Veins
Capillaries
Venules
#22
What is the term for the condition where blood flow to a part of the heart muscle is blocked, leading to tissue damage?
Hypertension
Myocardial infarction
Atherosclerosis
Arrhythmia
#23
What is the term for the condition characterized by the accumulation of fatty deposits in the inner lining of arteries?
Atherosclerosis
Thrombosis
Embolism
Hypertension
#24
What is the term for the condition where blood flow to a part of the brain is blocked?
Myocardial infarction
Stroke
Transient ischemic attack
Heart failure
#25
What is the term for the measurement of the force exerted by blood against the walls of arteries when the heart is at rest?
Systolic blood pressure
Diastolic blood pressure
Pulse pressure
Mean arterial pressure