What are the two superior chambers of the heart?

Which type of blood vessel has valves to prevent backflow of blood?

Which of the following statements is true regarding the ABO blood groups?

Blood is forced through which valve when leaving the left ventricle?

In systemic circulation, what happens to CO2 and O2 in the blood?

Which blood type is a universal donor?

Which term refers to contraction?

What chambers in the heart pump blood?

Blood enters into what structure in the heart from the superior and inferior vena cavae?

How many lobes to the left lung have?