Across
- 4. This is what the two upper chambers of your heart is called
- 5. Each heart beat generates this in arteries
- 7. Heart chambers walls are made of …………
- 9. Doctors use it to listen to heart beat
- 10. The heart is roughly of the size of your ………
- 11. Surname of the person, who discovered circulation of blood
- 14. The aquatic animals like fishes excrete cell waste as ………..
- 15. The process of removal of wastes produced by cells of living organisms
Down
- 1. Waste in the blood is removed by filtration at …………
- 2. This is what the two lower chambers of your heart is called
- 3. The waste dissolved on water is removed as …………….
- 6. Urine is passed out through ……………
- 8. It carries urine from kidneys to urinary bladder
- 12. This acts as a circulatory fluid for sponges and hydra instead of blood
- 13. These many number of chambers your heart has got it