| A | B |
| What percentage of water is in plasma? | 92% |
| What is the other name for red blood cells? | erythrocytes |
| What is the other name for white blood cells? | leukocytes |
| Where are most white blood cells produced? | bone marrow |
| What are the smallest and most numerous blood cells? | platelets |
| How many chambers are in the heart? | Four |
| What do valves do? | Keep blood from flowing in the wrong direction |
| The two top chambers of the heart are? | Atriums |
| What are the two lower chambers of the heart? | Ventricles |
| What is the process of pumping blood from the heart to the lungs and back? | Pulmonary Circulation |
| What kind of system is blood circulation in? | closed |
| Which blood vessel has a pulse? | Artery |
| How many types of blood vessels are there? | Three (3) |
| What is the largest blood vessel in the body? | Aorta |
| Which type of blood vessel has valves? | Veins |
| What is the name of small arteries? | arterioles |
| What is only artery that carries oxygen poor blood? | Pulmonary artery |
| Veins carry blood towards or from the heart? | towards the heart |
| How many kinds of blood types are there? | Four (4) |
| Which blood type is called a universal doner? | Blood Type "O" |
| Which blood type is considered a universal receiver? | Blood type "AB" |
| What cells are antigens located in? | red |
| Red blood cells get their color from what? | hemoglobin |
| What separates the sides of the heart? | septum |
| What is the main function of the heart? | To pump blood |