mucus in nose, trachea (wind-pipe) and bronchi - traps pathogens, cilia in trachea (wind-pipe) and bronchi - waves mucus up to the mouth, skin all over the outside of the body - prevents microorganisms entering the body, hydrochloric acid in stomach - kills microorganisms by denaturing proteins such as enzymes,

Ilg'orlar ro'yxati

Vizual uslub

Moslamalar

Namunani almashtirish

Tahrirlashni davom ettirish: ?