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22 Cards in this Set
- Front
- Back
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bladder |
muscular sac that holds urine until the urine is excreted |
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excretory system |
collects and eliminates wastes from the body; regulates the level of fluid in the body |
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kidney |
bean-shaped organ; filters wastes from blood |
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nephron |
network of capillaries and tubules, where filtration of blood occurs |
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ureter |
tube through which urine leaves each kidney |
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urethra |
tube through which urine leaves bladder |
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urine |
fluid, produced after blood is filtered; removes waste from body |
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active immunity |
occurs when yourbody produces antibodies inresponse to an antigen |
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allergy |
overly sensitive immuneresponse to common antigens |
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antibody |
protein that can attach toan antigen and make it inactive |
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antigen |
substance that causes animmune response |
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B cell |
forms and matures in thebone marrow; secretes antibodiesinto the blood |
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immunity |
resistance to a specificpathogen |
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inflammation |
process that causes apart of the body to become redand swollen |
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passive immunity |
occurs as a resultof the introduction of antibodiesthat were produced outside thebody |
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T cell |
forms in the bone marrow andmatures in the thymus; produces aprotein antibody that becomespart of a cell membrane |
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vaccination |
introduction ofweakened or dead pathogens intothe body |
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function of the excretory system |
collect, filter and eliminate liquid waste |
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endocrine system |
consists of organsand tissues that release chemicalmessages into the bloodstream |
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hormone |
chemical produced by anendocrine gland in one part of anorganism and carried in thebloodstream to another part |
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negative feedback |
control systemwhere the effect of a hormoneinhibits further release of thehormone |
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positive feedback |
control system inwhich the effect of a hormonecauses more of the hormone to bereleased |
