This quiz works best with JavaScript enabled.
Select an option to see the correct answer instantly.
Correct Answer: C) Heart.
Correct Answer: B) Blood.
Correct Answer: B) Right atrium and right ventricle.
Correct Answer: A) Arteries.
Correct Answer: A) Plasma.
Correct Answer: C) Voluntary muscle.
Correct Answer: D) Atrium.
Correct Answer: D) Carry blood back to the heart.
Correct Answer: C) Cardiac muscle.
Correct Answer: C) 4.
Correct Answer: C) Carbon dioxide.
Correct Answer: A) White blood cells.
Correct Answer: B) 120 days.
Correct Answer: B) Transport blood around the body.
Correct Answer: B) The heart.
Correct Answer: C) Plasma.
Correct Answer: D) Dominant.
Correct Answer: C) Pericardium.
Correct Answer: C) Atrium.
Correct Answer: B) Vein.
Correct Answer: A) Left atrium.
Correct Answer: D) All of the above.
Correct Answer: B) Inferior vena cava.
Correct Answer: C) Red blood cells.