WEBVTT

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Hello, my name is Madison Sand
and I'm from R.P.

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Laboratories Parasitology Department.

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This presentation will cover nematodes
or roundworms.

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Please for the Parasitology
Practice worksheet.

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While listening to the lecture,
feel free to pause the lecture.

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Take your notes.

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Write down any questions you may have
so we can discuss them

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when we meet in person.

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If we will not be meeting in person.

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I would suggest talking to your professor
about any questions you may have.

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The organisms.

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We'll discuss our intro
for makers to curious.

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Shakira.

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Ask her slumber Coyote's Nicanor
Americanus and actress Selma Duane.

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Nelly and Strongyloides star Corrales

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and Terapias for mic hilarious
or pin worm has a simple life cycle.

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Adult females
migrate at night on the outside,

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the anus and deposit eggs while crawling
on the skin of the Perry anal area.

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The larvae contained inside the eggs
develop and become infective,

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and 4 to 6 hours
infection occurs by self inoculation.

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Transferring eggs.

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The mouth with hands
have been scratched on the Perry anal area

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or through exposure to eggs
and the environment, like

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contaminated surfaces,
clothes, bed linens and doorknobs.

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Following ingestion of

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effective eggs, the larvae
hatch in the small intestine

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and they dose establish themselves
in the colon, usually in the cecum.

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Collection should be done
the morning before defecation and washing

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by pressing transparent cellulose tape
or pin worm paddle on the Perry anal skin

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and then examining the tape or paddle
microscopically

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on tanks for eggs or adult females.

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Woven parasite exams have only a 5
to 10% sensitivity.

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Possible complications of him
worm infection

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include a bacterial infection
around the anus, vaginas or verbal

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vaginas, urine writers,
cystitis, peritonitis, rectal abscess,

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prostate granulomas, liver granulomas,

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and conjunctival sac irritation.

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Eggs are 50 to 60 microns
and are flat on one side.

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They contain a developing larvae.

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Adult females measure 8 to 13mm,

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and adult males are 2 to 5mm.

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Adults have a civil galley, which are the
protruding edges by the mouth.

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An esophageal bulb
can also be seen microscopically

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darker.

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Sakura is also known as the human
whip worm.

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The number needed eggs are pass in stool
and the soil they and bring out and become

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effective in 15 or 30 days after

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ingestion by soil, contaminate hands
or food.

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The eggs hatch in the small intestine
and release larvae,

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then mature and establish themselves
as adults in the colon.

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The adult worms are fixed in the colon,
with the anterior portion

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threaded into the mucosa.

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Female worms.

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The cecum shared
between 3000 and 20,000 eggs per day.

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Chakiris is found worldwide,
with infections more frequent

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in areas with tropical weather
and poor sanitation practices.

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Patients are usually asymptomatic.

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However, heavy infections,
especially in small children,

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can cause gastrointestinal problems,
including abdominal pain, diarrhea,

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and rectal prolapse.

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Tracker crash.

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Her eggs are 50 to 65 microns.

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They are barrel shaped, thick shell and
possess a pair of polar plugs at each end.

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Adult females are 35 to 50mm
with a straight posterior end.

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Adult males are 30 to 45mm long
with a coiled posterior end.

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Both have a long, whip like anterior end.

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Hasker
slumber coil is the largest nematode

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to infect the human
gastrointestinal tract.

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Adult worms live in the lumen,
have a small intestine.

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A female may produce
approximately 200,000 eggs per day,

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which are pass with the feces.

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Both fertilized and unfertilized.

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Unfertilized eggs may be ingested,
but are not infective.

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Marvy develop within the fertile eggs.

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After 18 days.

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After infective eggs are swallowed,
the larvae hatch, invade

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the intestine mucosa, and are carried
by the portal veins to the lungs.

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The larvae

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mature further in the lungs, penetrate
the alveolar walls,

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ascend the bronchial tree to the throat,
and are swallowed.

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Upon reaching the small intestine.

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The development of adult worms

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occurs is found most commonly in tropical
and subtropical regions,

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especially in areas
with inadequate sanitation.

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Adult worms
usually cause no acute symptoms.

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High worm burdens,
though, may cause abdominal pain

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and intestinal obstruction,
and potentially perforation.

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Fertilized eggs are round

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and have a thick shell
with an external marmalade layer.

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In some cases, the outer layer is absent
and this is known as decor.

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Coordinated eggs.

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Fertile
eggs have ranged from 55 to 75 microns,

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and a developing
larva can be seen in most cases.

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Unfertilized eggs are long,
gated, and larger than fertile eggs

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up to 90 microns unfurl eggs contain
mainly a mass of rectal granules.

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Female adults

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measure 20 to 35cm long,
which treat cells.

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Males are smaller, have 15 to 31cm,
and tend to have curved tells.

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They have three lips at the anterior
end of the body.

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Intestinal hookworm
disease in humans is caused

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by at least someone one
gnarly indicator Americanness.

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Indicator americana system.

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In the United States and other parts
of the world, and place somewhat where

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Nellie is found worldwide a moist, warm
climates, but not in the United States.

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Eggs are passed in the stool, and larvae
hatch in 1 or 2 days

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and become free,
living in contaminated soil.

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These release for bit of form or

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immature larvae grow in the feces
and or the soil,

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and after 5 to 10 days become filler
from larvae that are infective.

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The larvae penetrate the skin of the host,
typically bare feet,

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and are carried through the blood vessels
to the heart and then to the lungs.

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They penetrate into the pulmonary alveoli,
ascend

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the bronchial tree to the pharynx,
and are swallowed.

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The larvae reach the small intestine
where they reside and mature into adults.

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Adult worms
live in the lumen of the small intestine,

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where they attach the intestinal wall,
which causes blood loss for the host.

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The eggs of

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summer indicator cannot be differentiated
microscopically.

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The eggs are thin shelled, colorless,
and measure 55 to 75 microns.

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Ribbit from larvae that hatch from
the eggs are 250 to 300 microns long.

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They have a large buccal canal
for bit of room.

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Larvae are usually not found in soil,

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but may be found if their size lay
in processing the soil specimen.

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If larvae are seen in soil, they must be
differentiated from larvae as strange.

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Aboitiz, Siqueiros

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filler from larvae are 500 to 700
microns long

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and are found in the environment annually.

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Someone dubbed
Nelly adults can measure 8 to 15mm

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and have a buccal capsule
containing sharp teeth.

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Indicator Americanos measure

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5 to 11mm and have a buccal capsule
containing cutting plates.

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Strongyloides or

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corrales is found in tropical
and subtropical areas across the globe.

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The life cycle is complex, alternating
between free living and parasitic

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life cycles, and involving auto infection.

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Sorry I said that one wrong.

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So unnecessary.

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Sticker release is found in tropical
and subtropical areas across the globe.

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The life cycle is complex, alternating
between free living and parasitic cycles

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and involving auto infection.

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In the free living cycle,
a bit from larva, pass and stool develop

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into either infective flow from larvae
or free living

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adult males and females
that mate and produce eggs.

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The filler from larvae penetrate the host
skin to initiate the parasitic cycle.

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In the parasitic cycle, the filler
from larvae into the circulatory system

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and transport to the lungs
and penetrate the alveolar spaces.

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They're carried to the trachea
and pharynx,

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swallowed, and reach the small intestine,
where they become adult females.

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The females live embedded in the sub
mucosa

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of the small intestine
and produce eggs by parthenogenesis.

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Because pair signals do not exist,

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the eggs release forbidden from larvae,
which can

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then be passing, store
or can cause auto infection.

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Eggs are thin shelled
and resemble hookworm eggs,

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but are rarely seen
because eggs and breeding hatch them.

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A host of the small intestine.

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The initial sign of strongyloides
infection is a localized rash.

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At the slightest penetration, patients
may then develop tracheal irritation

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and a dry cough as a larvae migrate
through the lungs up through the trachea.

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After the larva swallowed
into the gastrointestinal tract, patients

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may experience diarrhea, constipation,
abdominal pain, and anorexia.

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Hyper infection syndrome and disseminated
strongyloides

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can cause neurologic problems
include altered

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mental status,
seizures, meningitis, and brain abscesses.

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From larvae,

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gastroenteritis or paralysis
are 180 to 380 microns long,

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with a short buccal canal
and a prominent genital primordial.

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Cilia from larvae are up to 600 microns
long and are rarely seen,

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but they may be found in respiratory

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and stool specimens
during cases of auto infection.

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Hookworm A bit of foreign larvae
can be distinguished

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from strongyloides larvae
by the size of the buccal canal,

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so Angeles is short,
whereas hookworms buccal canal is long.

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Parasitic.

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Adult females are 2 to 3mm.

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The images in lifecycles
are courtesy of the centers

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for Disease Control and its laboratory
diagnostic Assistance website, DPT.