Appearance: Hookworms are small, thin, and slightly bent at the front end, resembling a hook, which gives them their name. Adult hookworms are typically about 5-13 mm in length and possess a specialized mouthpart equipped with sharp teeth or cutting plates, which they use to latch onto the intestinal wall and feed on the host's blood.
Lifecycle: The lifecycle of hookworms begins when eggs are passed in the feces of an infected host. Under favorable environmental conditions, these eggs hatch into larvae that can survive in the soil. The larvae penetrate the skin of a new host, usually through the feet, and migrate through the bloodstream to the lungs. From the lungs, they travel up the trachea, where they are swallowed and eventually reach the intestines, where they mature into adult worms and begin feeding and reproducing.