1. Fever is a _______________ response to invasion of the body by a pathogen.
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2. Bacteria enter the _______________ system through a superficial laceration to the skin.
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3. The _______________ system houses the blood cell-forming tissue that gives rise to the white blood cells of the immune system.
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4. During inflammation, a reaction of the _______________ system "turns up the thermostat", causing an increase in body temperature known as a fever.
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5. Fever is a mechanism that primarily protects _______________ systems against infection.
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6. Upon recognition of the foreign pathogen lymphocytes release _______________ that signal the brain to increase body temperature.
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7. Elevated body temperature helps ward off infection because it _______________ .
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8. A fever also enhances the _______________, making it easier to recover from infection.
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9. In the digestive system, a portion of the lymphatic system called _______________ absorb fats during digestion and carry them into the blood stream for circulation.
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10. Total volume of body fluid, including lymph, is ultimately controlled by the _______________ system.
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