* Which of the following blood cells actually carry the oxygen to your cells?
* Which of the following blood cells fight infection?
* Which of the following blood cells assist in clotting wounds?
* What is the liquid portion of the blood called?
* How is a bird's blood different from a human's?
* What molecule in the blood carries oxygen?
* This African tribe traditionally lives on a diet that includes cow blood- taken straight from the still-living cow.
* Someone has type A positive blood. What are they positive for?
* What does 'Rh factor' stand for?
* Why is the Rh factor important?
* What vegetable could a miser squeeze blood from?
* What is the average weight of the adult human heart?
* The left ventricle pushes the blood into the aorta against considerable resistance. What is the pressure exerted by the left ventricle called when measured during a physical examination?
* In order for the blood to flow through the heart in only one direction there are four heart valves. What is the name of the heart valve that prevents the blood from flowing from the left ventricle back into the left atrium?
* Normally the veins carry low oxygenated blood from the capillaries back to the heart. What are the only veins in the human body that carry highly oxygenated blood?
* Where are the sinuses of Valsalva located?
* What is the first branch of the left coronary artery?
* What is the mean arterial blood pressure in a person whose systolic blood pressure is 162 mm. Hg. and whose diastolic blood pressure is 120 mm. Hg.?
* In the human fetus what is the anatomical characteristic of the heart and main cardiac vessels that prevents blood passing to the lungs of the non-breathing unborn child?
* In the human adult, with a reasonably normal height and weight, what is the total blood volume in the body?