APPENDIX
GLOSSARY
A
ABOPERCULAR
Refers to the position opposite the operculum.
ACANTHOR
First larval stage of the acanthocephala which hatches from
the egg.
ACETABULUM
The ventral sucker of a fluke, used as a hold-fast organelle.
ACTIVE TRANSPORT
In the acquisition of nutrients, molecules are accumulated
against a concentration gradient and transported' across the
cell membrane by a carrier in an energy-yielding metabolic
reaction, used by certain protozoan cells.
ALAE
Wing like structures often seen as cuticular expansions on
adult helminths.
ALGID MALARIA
A pernicious condition seen with P. falciparum where the
gastrointestinal tract and other abdominal viscera are
overwhelmed by enormous numbers of parasites causing
marked congestion.
ALTERNATION OF
The alternate occurrence of asexual and sexual
GENERATIONS
reproduction in the life cycle of an organism.
AMASTIGOTE
The nonflagellated form of organisms belonging to the
Irypanosomatidae also called a Leishman-Donovan (L-0)
body.
ANTERIOR STATION
The development of a protozoan in the anterior portion of the
intestine or salivary glands of its insect host.
APICAL COMPLEX
A combination of structures, polar rings; conoids,
micronemes; micropores, subpellicular tubules, and
rhoptries, etc. seen in certain developmental stages of the
Apicomplexa.
APPLIQUE
An early form of the trophozoite, most often seen in
P. falciparu , which appears as a delicate layer of cytoplasm
with a protruding dot of chromatin on the margin of an
erythrocyte. Also called accole' form.
MD0841
A-1