Year 3: Heart and Blood Crossword
Across
3. How many main chambers are there in the heart?
8. This chamber of the heart contracts and pumps blood to the lungs
10. A red pigment found in red blood cells
12. Carbon dioxide, sugars and urea are carried in the __________ of the blood
15. The colour of haemoglobin
16. ‘Double Circulation’ means that we have ____ separate circulation systems, one for the lungs and one
for the rest of the body organs.
17. These are found in veins and in the heart and are there to ensure the blood flows in the correct
direction
18. A substance made in the liver and transported to the kidney in the blood plasma
19. These blood vessels have walls that are one cell thick
20. A substance absorbed in the small intestine and transported to cells in the blood plasma
21. Blood is the only liquid _____ in the human body
22. This device can be inserted into an artery to widen the lumen
24. What is formed when oxygen and haemoglobin bind
25. The bottom two chambers of the heart
27. The main tissue found in the wall of the heart
Down
1. This organ system transports substances around the body
2. The heart is an _____ which pumps blood
4. The only cells in your body without a nucleus
5. These cells found in the blood defend our bodies against microorganisms
6. A substance made in cells and transported to the lungs in the blood plasma
7. Deoxygenated blood enters this chamber of the heart
9. Small fragments of cells found in the blood to clot the blood at the site of a wound
11. This chamber of the heart contracts and pumps blood around the body
13. These blood vessels carry blood away from the heart
14. The top two chambers of the heart
19. A stent could be inserted into this artery to prevent a heart attack
23. These blood vessels carry blood towards the heart
26. Oxygenated blood enters this chamber of the heart
Muscle The main tissue found in the wall of the heart
Organ The heart is an _____ which pumps blood
Circulatory This organ system transports substances around the body
Four How many main chambers are there in the heart?
Atria The top two chambers of the heart
Ventricles The bottom two chambers of the heart
Leftatrium Oxygenated blood enters this chamber of the heart
Leftventricle This chamber of the heart contracts and pumps blood around the body
Rightartrium Decxygenated blood enters this chamber of the heart
Rightventricle This chamber of the heart contracts and pumps blood to the lungs
Valves These are found in veins and in the heart and are there to ensure the blood flows in the correct
direction
Arteries These blood vessels carry blood away from the heart
Veins These blood vessels carry blood towards the heart
Two ‘Double Circulation’ means that we have ____ separate circulation systems, one for the lungs and one
for the rest of the body organs.
Arteries These blood vessels have thick elastic and muscle walls to even out surges in blood pressure
Veins These blood vessels have thin walls and carry blood at low pressure
Stents This device can be inserted into an artery to widen the lumen
Coronary A stent could be inserted into this artery to prevent a heart attack
Capillaries These blood vessels have walls that are one cell thick
Capillaries These blood vessels allow exchange of substances between cells and blood
Tissue Blood is the only liquid _____ in the human body
Plasma Carbon dioxide, sugars and urea are carried in the __________ of the blood
Urea A substance made in the liver and transported to the kidney in the blood plasma
Carbondioxide A substance made in cells and transported to the lungs in the blood plasma
Sugar A substance absorbed in the small intestine and transported to cells in the blood plasma
Redbloodcells The only cells in your body without a nucleus
Haemoglobin A red pigment found in red blood cells
Oxyhaemoglobin What is formed when oxygen and haemoglobin bind
Red The colour of haemoglobin
Whitebloodcells These cells found in the blood defend our bodies against microorganisms
Platelets Small fragments of cells found in the blood to clot the blood at the site of a wound