<span>liters of blood each day. A) 100,000 </span>
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When stimulated, the brain stem's sneeze center orders muscle contractions from esophagus to sphincter. That includes the muscles controlling the eyelids. Some sneezers even shed a few tears. Perhaps people close their eyes while sneezing to prevent the expelled particles from entering their eyes,
White blood cells help to fight infection
The blood carries these cells
