| A | B |
|---|
| respiration produces | carbon dioxide |
| respiration uses | oxygen |
| excrete | get rid of waste |
| breathing in | inhalation |
| breathing out | exhalation |
| windpipe | trachea |
| holds the windpipe open | rings of cartilage |
| sheet of muscle under the rib cage | diaphragm |
| carry blood away from the heart | arteries |
| carry blood into the heart | veins |
| tiny blood vessels in organs | capillaries |
| red blood cells are made here | bone marrow |
| liquid part of the blood | plasma |
| carries oxygen | haemoglobin |
| air sacs in the lungs | alveoli |
| back bones | vertebrae |
| the elbow is | a hinge joint |
| the shoulder is | a ball and socket joint |
| biceps and triceps work together | they are antagonistic muscles |
| respiration takes place | in mitochondria |
| affects the way the body works | drugs |
| paracetamol | painkiller |
| ibuprofen | anti- inflammatory |
| penicillin | antibiotic |
| drugs taken for pleasure | recreational |
| drugs which make the nervous system slower | depressants |
| drugs which make the nervous system go faster | stimulants |
| 'Safe' number of units per week | 14 |
