| Term 
 
        | protects against environmental hazards; helps control body temperature |  | Definition 
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        | Term 
 
        | directs immediate response to stimuli, usually by coordinating the activities of other organ systems |  | Definition 
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        | produces movement and locomotion; provides support; generates heat |  | Definition 
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        | delivers air to sites where gas exchange can occur between the air and circulating blood |  | Definition 
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        | defends against infection and disease; returns tissue fluid to the bloodstream |  | Definition 
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        | processes food; absorbs nutrients; eliminates waste products |  | Definition 
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        | eliminates excess water, salts, and waste products |  | Definition 
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        | transports cells and dissolved materials, including nutrients, wastes and gases |  | Definition 
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        | directs long term changes in other organ systems by secreting hormones |  | Definition 
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        | produces sex cells and hormones |  | Definition 
 
        | male and female reproductive systems |  | 
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        | Term 
 
        | provides support; protects tissues; stores minerals; forms blood |  | Definition 
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