Across
- 2. Movement of blood from the right atrium to the lungs and back to the left atrium is called _____ circulation.
- 6. The blood circulatory system is a ____, transport system.
- 8. When the ventricles contract (______), blood pressure increases and blood is forced out the aorta and pulmonary arteries.
- 11. The heart is a _____ chambered, muscular pump.
- 13. Movement of blood from the left ventricle through the body and back to the right atrium is called _____ circulation.
- 15. __________ or white blood cells are fewer in number and neutralise and destroy any foreign protein in the body.
- 16. Blood movement through venules and veins is assisted by muscular body movements and _____.
- 18. The left ventricle contracts with great force (the source of blood pressure and pulse) and pushes blood through all the arteries, ______, and capillaries of the body.
- 19. ______ are cell fragments that help to clot blood.
- 24. The circulatory or ______ system consists of the heart and all the blood carrying vessels leading to and from it.
- 27. The negative pressure in the chest during _______ draws air into the lungs, and also tends to draw blood into the veins near the heart.
- 29. The _______ arteries supply blood to the heart itself.
- 30. Veins are connected to capillaries via small veins called ___________.
- 31. Arteries and arterioles are relatively thick-walled, ____ vessels that transport blood under high pressure away from the heart.
- 33. Blood plasma is a fluid composed of ______, products of digestion, waste products, a number of mineral ions and water.
- 34. Veins and venules are ____-walled vessels that contain internal valves which direct blood coming from capillaries back to the heart.
Down
- 1. Small arteries are called __________.
- 3. Blood is composed of cells, cell fragments, and a fluid called _______.
- 4. Blood enters the heart through veins during ______, when ventricles relax and the pressure reduces.
- 5. The prime function of values is to control the _____ of blood.
- 7. The right atrium takes in blood from the body, contracts and forces it into the right ______.
- 9. The cellular part of the blood is produced in cells located in the red bone ____.
- 10. Exchange between blood plasma and intestinal fluid occurs by _____ across capillary walls.
- 12. Erythrocytes or red blood cells transport oxygen as _________ from the lungs to body tissues, and carbon dioxide from body tissues to the lungs.
- 14. Diffusion is driven by ______ gradients between plasma and interstitial fluid, and occurs along the length of the capillary.
- 17. Mammals have two transport systems: the blood circulatory system and the _____ system.
- 20. The left _____ pushes blood into the into the left ventricle.
- 21. Arteries carry blood away from the heart, veins carry blood towards the heart, and capillaries are the narrow ______ vessels in between.
- 22. The right ventricle contracts, forcing blood through ____ to the lungs.
- 23. ______ blood pressure is the most common cardiovascular condition.
- 24. _______ are microscopically small vessels that receive blood rich in nutrients from arterioles and distribute it to body cells.
- 25. Valves are located in the heart and _____.
- 26. _____ flows from the lungs through the pulmonary vein into the left atrium of the heart.
- 28. ______ vessels carry blood to and from all parts of the body, except the lungs.
- 32. Oxygenated blood is pumped by the left ventricle through the body via the _____.