? The adults lay eggs in the alimentary canal of the host animal
? Egg are passed out together with faeces
? Egg hatch into larvae while outside the host
? The larvae climb onto vegetation and moult about four times in a process called ecdysis to form cysts
? The larvae (cysts) are swallowed by a host animal as it feeds
? The encysted larvae shed their cysts in the small intestine to become juvenile worms.
? The young worms penetrate through the wall of the small intestine into the bloodstream.
? Through blood, they migrate to the heart, then liver and lungs
? When moving from one part of the body to other, the worms continue changing
? While in the lungs, the larvae move up the trachea where they are coughed out and swallowed with sputum into the intestine
? They then grow and develop into adults while in the intestine max. l0mks
john3 answered the question on January 22, 2018 at 10:34
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