Term
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Definition
| Any substance that evokes an allergic response. |
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Term
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Definition
| Bronchial asthma caused by hypersensitivity to an allergen or allergens. |
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Term
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Definition
| Microscopic sacs in the lungs where oxygen is exchanged for carbon dioxide; also called air sacs. |
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Term
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Definition
| Immunoglobulins produced by lymphocytes in response to bacteria, viruses, or other antigenic substances. |
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Term
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Definition
| A substance (usually a protein) that causes the formation of an antibody and reacts specifically with that antibody. |
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Term
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Definition
| The onset of wheezing together with difficulty breathing. |
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Term
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Definition
| The general term for recurrent and reversible shortness of breath from narrowing of the bronchi and bronchioles; it is often referred to simply as asthma. |
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Term
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Definition
| Medications that improve airflow by relaxing bronchial smooth muscle cells (e.g., xanthines, adrenergic agonists). |
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Term
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Definition
| Chronic inflammation of the bronchi. |
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Term
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Definition
| A condition of the lungs characterized by enlargement of the air spaces distal to the bronchioles. |
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Term
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Definition
| Proteins belonging to any of five structurally and antigenically distinct classes of antibodies present in the serum and external secretions of the body; they play a major role in immune responses; immunoglobulin is often abbreviated Ig. |
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Term
Lower respiratory tract (LRT) |
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Definition
| The division of the respiratory system composed of organs located almost entirely within the chest. |
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Term
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Definition
| A prolonged asthma attack. |
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Term
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Definition
| The division of the respiratory system composed of organs located outside the chest cavity (thorax). |
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