"Circulatory system - IGCSE Biology": HTML5 Crossword

Across

2. Where do all the arteries branch from? (5)
5. What is the name for the space inside a vein or an artery? (5)
6. When the cardiac muscles contract, they heart becomes smaller and pushes the blood out. This process is called… (7)
7. What is the name for the process in which doctors insert a balloon into a collapsed artery and inflate it using water? (11)
8. Which are the very very very tiny blood vessels between the terminations of the arteries and the beginnings of the veins? (11)
10. What is caused by the expansion and the relaxation of an artery? (5)
12. Which blood vessels carry blood away from the heart? (8)
15. Which vessel takes the blood out of the liver? (7,5)
16. Which blood vessels carry blood towards the heart? (5)

Down

1. What make blood flow in the right direction? (6)
3. What the name for a blood clot in the veins of the legs? (10)
4. What is the name for the blockage in the arterioles in the lungs by a blood clot? (9,8)
9. What is the name for the blood vessels in the kidneys? (5)
10. What is the name of the patch of muscle in the right atrium that controls the heart rate? (9)
11. What is the name for a small, expandable tube used for inserting in a blocked vessel? (5)
13. What is a common drug that can help reduce the risk of blood clots forming inside the blood vessels? (7)
14. What is the name for the surgery in which a length of blood vessel taken from another part of the body replaces a blocked or damaged coronary artery? (6)