Across
- 6. The ____ known as the blood plasma, is a watery yellow fluid.
- 7. All the changes that occur in the heart during one heartbeat are known as the ____________.
- 8. These carry blood towards the heart
- 10. carry blood away from the heart.
Down
- 1. These are flat discs that do not contain nuclei. They play a role in the blood clotting process.
- 2. A thin membrane lines the inside of the heart, known as the ________.
- 3. The body contains about 5l of blood which circulates around the body in the _______.
- 4. The two upper chambers, known as the _____.
- 5. the exchange of substances occurs between the blood in the ________ and cells.
- 9. The heart is divided into a left and right half by a strong muscular wall,called the _____.