2)effect on body ① hypertonic of eCF→ thirst 2 movement of the body fluid ICF- ECF cell dehydration Brain dehydration Sleepiness subarachnoid space bleeding Dehydration of sweat glands dehydrated fever dehydration of heat regulating center2) effect on body ① hypertonic of ECF thirst ② movement of the body fluid ICF ECF cell dehydration Brain dehydration Sleepiness subarachnoid space bleeding Dehydration of sweat glands dehydrated fever dehydration of heat regulating center