#1
Which of the following is not a component of the cardiovascular system?
Heart
Lungs
Kidneys
Arteries
#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 risk factor for cardiovascular disease?
High blood pressure
Regular exercise
Smoking
High cholesterol
#4
What is the term for the pressure exerted by circulating blood against the walls of blood vessels?
Heart rate
Pulse pressure
Blood pressure
Cardiac output
#5
Which chamber of the heart receives oxygen-rich blood from the lungs?
Left atrium
Right atrium
Left ventricle
Right ventricle
#6
Which blood vessels carry oxygen-rich blood away from the heart?
Veins
Arteries
Capillaries
Venules
#7
What is the term for the volume of blood pumped by the heart in one minute?
Stroke volume
Cardiac output
Heart rate
Pulse pressure
#8
Which of the following is a primary function of the cardiovascular system?
Regulating body temperature
Maintaining fluid balance
Transporting nutrients and oxygen to cells
Producing hormones
#9
What is the term for the relaxation phase of the cardiac cycle?
Systole
Diastole
Atrial depolarization
Ventricular contraction
#10
Which valve prevents the backflow of blood from the left ventricle into the left atrium?
Aortic valve
Tricuspid valve
Mitral valve
Pulmonary valve
#11
What is the Frank-Starling mechanism?
A method to measure blood pressure
A way to regulate heart rate
A mechanism to adjust cardiac output based on venous return
A technique for measuring stroke volume
#12
Which of the following is TRUE regarding hypertension?
It is also known as hypotension
It is defined as systolic blood pressure below 90 mmHg
It increases the risk of heart disease and stroke
It is more common in underweight individuals
#13
Which of the following is NOT a major component of blood?
Plasma
Red blood cells
Platelets
Enzymes
#14
Which of the following conditions is characterized by an irregular heartbeat?
Aneurysm
Arrhythmia
Angina
Atherosclerosis
#15
Which of the following is a risk factor for developing congestive heart failure?
Regular exercise
Low blood pressure
Obesity
High HDL cholesterol levels