Final answer:
The function of the phagosome formed during phagocytosis is to digest and destroy the engulfed pathogen or foreign particle.
Step-by-step explanation:
The function of the phagosome formed during phagocytosis is to digest and destroy the pathogen or foreign particle that has been engulfed by the phagocyte. Once the pathogen is enclosed within the phagosome, it fuses with a lysosome to form a phagolysosome. Digestive enzymes and acids from the lysosome then kill and break down the pathogen in the phagolysosome.
After the pathogen has been completely digested, the undigested materials are expelled from the phagocyte through exocytosis.