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| Question | Answer |
| MACROPHAGE | White blood cells called monocytes travel in the blood. Once they settle in organs they develop into macrophages. These initiate the immune response displaying antigens for recognition by lymphocytes |
| AGGLUTINOGEN | Antigen carried on the external surface of the membrane of red blood cells |
| ANTIGEN | A molecule that stimulates an immune response by lymphocytes |
| ANTIBODY | A protein made by lymphocytes in response to the appropriate antigen |
| AGGLUTINOGEN | The clumping of red blood cells |
| MYOGENIC | The heartbeat is initiated from within the muscle itself and not due to nerve stimulation |
| SYSTOLE | Stage in which the heart muscle contracts |
| DIASTOLE | Stage in which the heart muscle relaxes |
| STROKE | Damage to the brain caused by a blood clot carried in the blood getting stuck in an artery supplying blood to the brain |
| MYOCARDIAL INFARCTION | When blood is prevented from passing through the coronary artery to the heart muscle it supplies |
| ARRHYTHMIA | A deviation or disturbance of the normal heart rhythm |
| AFFINITY | One molecule having a chemical attraction for another |
| PARTIAL PRESSURE (of oxygen) (pO2) | Normal atmospheric pressure is 100 kPa. As oxygen makes up 21% of the atmosphere its maximum partial pressure is 21 kPa |
| BOHR EFFECT | Relationship between the saturation of haemoglobin and the partial pressure of oxygen. The higher the partial pressure of carbon dioxide the more the curve shifts to the right |
| TISSUE FLUID | Plasma minus plasma proteins |
| LYMPH | A colourless fluid, derived from tissue fluid, found in the lymphatic system |
| LYMPHATIC SYSTEM | A network of conduits called lymphatic vessels that carry lymph uni-directionally towards the heart |
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