How long can a human live without water How long can human live without food? A human can't live without food for 3 or 4 days (however your body type is,) and a human can't live without water for 2 or 3 days.
Cavities refer to tooth decay, which occurs when specific types of bacteria produce acid that destroys the toothâs enamel and its underlying layer, the dentin. Signs & Symptoms. Cavity symptoms include: 1  Toothache. 2  Sensitivity to sweet, hot or cold foods or drinks.
Medical definition of nasal cavity: the vaulted chamber that lies between the floor of the cranium and the roof of the mouth of higher vertebratesâ¦ the vaulted chamber that lies between the floor of the cranium and the roof of the mouth of higher vertebrates extending from the external nares â¦ See the full definition