Cardiovascular System Quiz

What is the function of the left atrium?

• Receives deoxygenated blood from the body

• Receives oxygenated blood from the lungs

• Pumps blood into the pulmonary artery

• Transports blood from the heart to the body

What is the liquid part of the blood that is mostly water and carries solid substances?

• Plasma

• Red blood cells

• White blood cells

• Platelets

What is the primary function of platelets?

• To transport oxygen

• To fight infections

• To stop blood loss through clotting

• To carry nutrients

What is the role of white blood cells in the immune system?

• To transport oxygen

• To produce antibodies

• To form blood clots

• To carry nutrients

Which of the following is NOT a function of platelets?

• Stop blood loss

• Become sticky when in contact with air

• Transport oxygen

• Seal damaged blood vessels

What percentage of plasma is water?

• 50%

• 70%

• 90%

• 100%

What attracts oxygen in red blood cells?

• Plasma

• Platelets

• Haemoglobin

• Antibodies

What is the color characteristic of leucocytes?

• Red

• Blue

• Colourless or transparent

• Green

What is the primary function of leucocytes?

• Transport oxygen

• Fight infection

• Digest food

• Regulate temperature

Which function of the CV system helps in the removal of CO2?

• Delivery of O2 & nutrients

• Blood clotting

• Removal of waste

• Fighting infection