Biology Lab Microscope Photo & Organism Flashcards

Vocabulary practice flashcards covering organism names, specific stages, anatomical clues, diseases, and infective stages from the biology lab notes.

Trypanosoma cruzi (Blood trypomastigote)

A protozoan flagellate characterized by a C-shaped curved body among red blood cells and a prominent dark kinetoplast near one end; transmitted via infected kissing-bug feces to cause Chagas disease.

Borrelia burgdorferi

A spirochete bacterium seen under dark-field microscopy as long, thin, corkscrew-shaped cells appearing bright against a dark background; transmitted by infected Ixodes ticks to cause Lyme disease.

Schistosoma mansoni (Egg)

An elongated trematode (blood fluke) egg distinguished by a conspicuous lateral spine projecting from the side; transmitted when freshwater cercariae from infected snails penetrate skin to cause intestinal schistosomiasis.

Fasciola hepatica (Adult)

A trematode (liver fluke) with a broad, flat, leaf-shaped body, cone-like anterior end, and branching internal structures; adults reside in bile ducts and cause fascioliasis upon ingesting metacercariae on aquatic plants like watercress.

Enterobius vermicularis (Adult female)

A slender, unsegmented nematode (pinworm) with a long, sharply pointed tail; adult females migrate to the perianal region to lay eggs, causing enterobiasis when infective eggs are swallowed.

Necator americanus (Adult mouthparts)

The mouthparts of a human hookworm featured by a rounded buccal capsule with cutting plates along the mouth opening; adults feed on blood in the small intestine, potentially causing iron-deficiency anemia.

Trichinella spiralis (Muscle larva)

An encapsulated nematode larva residing in striated muscle, forming multiple round or elongated section profiles; transmitted by ingesting muscle larvae in undercooked meat to cause trichinellosis.

Ancylostoma caninum (Adult mouthparts)

The mouthparts of a dog hookworm featuring a buccal capsule with three pairs of prominent teeth; infective larvae can penetrate human skin, causing cutaneous larva migrans.

Dipylidium caninum (Proglottid)

An elongated tapeworm (cestode) segment featuring one genital pore on each lateral side (double pores); transmitted by swallowing an infected flea to cause dipylidiasis.

Fasciola hepatica (Egg stage)

A large, oval, yellow-brown trematode egg featuring an operculum (lid) at one end; found in stool during an established infection.

Enterobius vermicularis (Egg stage)

Asymmetric oval pinworm eggs featuring one side flatter than the other, yielding a D-shaped profile; routinely collected using the perianal tape test.

Dipylidium caninum (Egg packet)

A cluster of several round tapeworm eggs grouped together inside a shared packet, with each egg containing a hooked embryo (oncosphere).

Necator americanus Infective Stage

The L3 larva (filariform larva) that develops in soil and penetrates exposed human skin to initiate the life cycle.

Trichinella spiralis Infective Stage

The muscle larva encysted in meat that is freed by digestion in the gastrointestinal tract when ingested by a new host.