PATHOLOGY

Detailed explanation-1: -Hookworm s are nematode endoparasites that cause intestinal blood loss during a part of their life cycle. An estimated 576–740 million people are infected with Ancylostoma duodenale, Necator americanus, or both. N. americanus is the predominant hookworm worldwide.

Detailed explanation-2: -Endoparasites are parasites that live in the tissues and organs of their hosts, such as tapeworms, flukes, and protozoans of vertebrates.

Detailed explanation-3: -Endoparasites are parasites that dwell in the host body at various locations such as lungs, kidneys, and blood cells. Their life cycles are more complicated due to their great specialization. For example-Human malaria is caused by the endoparasite Plasmodium falciparum.

Detailed explanation-4: -(B) Endoparasites live inside the host. Examples include Dirofilaria immitis, a roundworm that lives inside cats and causes heartworm disease, hookworms inside human guts, and Plasmodium falciparum, a parasite that lives inside human red blood cells.