Chapter 8 - Transport in Humans quiz

Which of the following is NOT a reason why humans need a transport system?

• We have a large surface area to volume ratio

• We are large organisms

• Various parts of our bodies are far apart from one another

• We are multicellular organisms

The four components of blood are: Plasma, Red blood cells, White blood cells and...

Red blood cells contain ___________ which allows oxygen to be transported within the body.

Which of the following describes white blood cells?

• They are involved in the phagocytosis of bacteria

• They assist in the clotting of blood

• They transport oxygen to the rest of the body

• They are produced in the spleen

Answer explanation

White blood cells are involved in our body's immune system. They may either produce antibodies or undergo phagocytosis to remove foreign particles from the body.

Which of the following carries blood away from the heart?

• Capillaries

• Valves

• Arteries

• Veins

All arteries carry oxygenated blood.

• True

• False

Answer explanation

There is one exception: the pulmonary artery carries deoxygenated blood instead (from the heart to the lungs).

Which of the following is true?

• Capillaries carry blood at high pressures

• Veins have a large lumen relative to its diameter

• Capillaries have muscular walls

• Arteries contain semi-lunar valves to prevent the backflow of blood

Biology is my favourite subject

• YES

• no... I need consultation