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5 Cards in this Set
- Front
- Back
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Immunity |
The ability to be resistant to injury, particularly by poisons, foreign proteins and invading parasites, due to the presence of antibodies |
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Antigen |
A substance, that when introduced into the tissues or blood activated the immune system which is induced to form antibodies. These antibodies are specific to the antigen and react with it to make it harmless |
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Antibody |
A protein produced by certain cells in the body in the presence of a specific antigen. The antibody combines with that antigen to neutralise, inhibit or destroy it |
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The immune system |
This consists of a number of lymphoid organs linked by lymphatic vessels and capillaries. Examples of lymphoid organs are the thymus gland, spleen, tonsils, bone marrow and the lymph nodes. The lymphoid organs house billions of lymphocytes which are responsible for identifying and eliminating infectious parasites |
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Describe erythrocytes |
•Red blood cells that carry oxygen from the lungs to respiring tissue •Contain large amounts of haemoglobin •No nucleus •Biconcave shape to maximise SA |
