Cardio Quiz

Which of the following is the primary function of the cardiovascular system?

• Digestion

• Circulation of blood

• Respiration

• Excretion

What is the main muscle involved in the process of breathing?

• Biceps

• Diaphragm

• Triceps

• Quadriceps

Which blood vessels carry oxygenated blood away from the heart?

• Veins

• Arteries

• Capillaries

• Venules

What is the name of the upper chambers of the heart?

• Ventricles

• Atria

• Septa

• Valves

Which part of the respiratory system is also known as the windpipe?

• Larynx

• Pharynx

• Trachea

• Bronchi

What is the primary gas exchanged in the lungs during respiration?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Helium

Which component of blood is responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the normal resting heart rate range for an average adult?

• 30-50 beats per minute

• 60-100 beats per minute

• 100-120 beats per minute

• 120-150 beats per minute

Which structure prevents the backflow of blood in the heart?

• Arteries

• Veins

• Valves

• Capillaries

What is the primary function of hemoglobin in the blood?

• Fight infections

• Transport oxygen

• Clot blood

• Regulate temperature