Respiration

Energy=moving, growing and keeping warm, to produce new cells

Cells respire by breakign down the glucose a bit at a time.

glucose+oxygen=carbon dioxide+water+energy=aerobic repsiration

glucose=carbon dioxide+water+energy=anaerobic respiration

Blood circlulation

The heart

Lungs

If you worked as a coal miner on the olden days most of them got lung disease. This was caused by them breathing in so much dust. This then damaged the lung tissue. If the lung tissue gets damaged it gets smaller. This then means that you can breath in less oxygen.

Smoking also does this as the tabacco irritaes their air passages. Coughing also damages the delicate tissue.

The gas exchange that takes place in the lungs is where the oxygen that you have just breathed in diffuses into the blood and the waste CO2 passes from your blood and out into the air. This is called gas exchange. Inside the lungs there are millions of air sacs called alveoli. The walls of the alveoli are only one cell thick. The large number of caplilaries around the alveoli give the lungs there pinky colour. Blood carries oxygen away from the alveoli continously to supply the body cells. It also brings waste CO2 to the alveoli. This prevents CO2 building up in your blood and poisining you. 

COPD

• C=chronic=longterm
• O=obstructive=blocking
• P=pulmonary=to do with the lungs
• D=disease= disorder

COPD includes- chronic bronchitis-emphysema-asbestosis-pneumoconiosis-tumours

Over 3 million people a year die from lung diseases, over 90% of deaths from COPD are in poorer countries, 80 million people are known to have moderate to severe COPD, millions more have COPD but don't know it,COPD affects men and women equally.

Inhaled and Exhaled air

Inhaled air

• 21% oxygen
• 0.03% CO2
• 79 % nitrogen
• varies water vapour

Exhaled air

• 17% oxygen
• 4% CO2
• 79% nitrogen
• saturated water vapour

Respiration of other living things

You can do an experiment on anything living to see whether they respire. You get 4 boiling tubes. Line them up in a row and attach a tubes to them with 4 straws to go in then out a different straw. You have sodium hydroxide, lime water and woodlice and another boiling tube of lime water. You do this to show that it was only the woodlice making the lime water not cloudy not anthing else.You wait a bit and if the lime water has or is turning cloudy the living thing is respirering.