PATH*3040 Practical Exam Review - Platyhelminthes, Trematoda, Cestoda, Nematodes

Set of flashcards covering key vocabulary terms related to Platyhelminthes, Trematoda, Cestoda, and Nematodes based on lecture notes.

Platyhelminthes

A phylum of soft-bodied, unsegmented worms, commonly known as flatworms.

Monogenea

A class of parasitic flatworms known as ectoparasites, primarily affecting fish.

Trematoda

A class of flatworms commonly known as flukes, which often have complex life cycles involving intermediate hosts.

Cestoda

A class of parasitic flatworms commonly known as tapeworms, characterized by their segmented bodies.

Ectoparasite

A parasite that lives on the external surface of its host.

Hermaphrodite

An organism that has both male and female reproductive organs.

Direct life cycle

A life cycle that does not involve an intermediate host.

Intermediate host (IH)

A host in which a parasite develops but does not reach sexual maturity.

Definitive host (DH)

The host in which the parasite reaches adulthood and, if applicable, reproduces sexually.

Miracidium

The free-swimming larval stage of a trematode that hatches from the egg.

Sporocyst

A larval form of trematodes that develops within the first intermediate host, usually a snail.

Cercaria

The free-swimming larval stage of flukes that emerges from the sporocyst.

Metacercaria

The encysted larval stage of a trematode, found on leaves or in the second intermediate host.

Hexacanth embryo

The larval stage of tapeworms, characterized by six hooklets.

PPP (Prepatent period)

The time required for a parasite to mature and produce eggs after infection of a host.

Pathogenesis

The mechanism by which a disease develops in a host.

Zoonotic threat

A disease that can be transmitted from animals to humans.

Acanthor

The larval stage of an acanthocephalan worm, contained within an egg.

Proglottid

A segment of a tapeworm that contains reproductive structures.

Scolex

The anterior part of a tapeworm, equipped for attachment to the host's intestines.

Cysticercus

A larval form of a tapeworm found in the tissues of the intermediate host.