Ascaris Flashcards
Greek word
Ascaris
Meaning of Ascaris
intestinal worm
Latin word
Lumbrica
meaning of Lumbrica
worm
common name for Ascaris lumbricoides
Giant Intestinal Roundworm
Soil-Transmitted Helminth
Geohelminth
Kingdom (Geohelminth)
Animalis
Subkingdom (Geohelminth)
Metazoa
Phylum (Geohelminth)
Nematoda
Class ( Geohelminth)
Secernentea
Order (Geohelminth)
Ascarididae
Genus (Geohelminth)
Ascaris
Specie (Geohelminth)
Ascaris Lumbricoides
type of sematic muscle arrangement
Polymerian
Bigger parasite, male or female?
female
color of parasite
whitish or pinkish
can live for how many years?
1-2 years
adults reside in but ___________________ to the ___________________ of the small intestines
do not attach, mucosa
size of adult male
10-31 cm
ventrally curved posterior end with 2 copulatory spicules
adult male
genitalia consists of single, long, tortuous tubule
adult male
size of adult female
22-35 cm
vulva located midventrally near junction of anterior and middle thirds of the body
adult female
distinct groove
genital girdle
formed to facilitate mating
indication of estrus
present on female worms that have no ______________
spermatozoa
loss of outer mammillated covering
decorticated egg
thick transparent hyaline shell
fertilized eggs
example of decorticated egg
kato-katz
infective stage
embryonated eggs
disorder of eating what is not food
PICA
where does egg hatches releasing the larvae?
small intestines
enters the portal circulation
larval migration stage
lungs: breaks out
2nd and 3rd molting
glottis: gets swallowed
4th molting
where does larva develops into adults?
jejunum
how many days to become embryonated?
12-18 days
most prevalent in how many years?
5-9 years
usual infection
10-20 worms
long term effect of malnutrition
growth impairment
worm can lodge in the appendix
acute appendicitis
occlude pancreatic duct
pancreatitis
carry intestinal bacteria
production of abscess
penetrate intestinal wall
peritonitis
used for identifying infection with soil-transmitted helminths
polymerase chain reaction
decreases atp production
albendazole
inhibits cholinesterase
spastic paralysis
massive larval invasion of lungs can cause ____________
acute respiratory distress syndrome
study of patterns
epidemiology
number of new cases
incidence
number of individual
prevalence
rate of disease
morbidity
use of anthelminthic drugs
deworming
effect of a drug
efficacy
defined as permanent reduction to zero
disease eradication
reduction to zero of the incidence
disease elimination