Exam 1

Question 0

Enter Vermicularis (vermicelli) Dx

Answer 0

tape buttock 2-3 hrs after sleep or in AM for 3 days

Tx whole household

Question 1

Enter Vemicularis (Vermicelli)

Answer 1

Anal itch

GRAVID female travels to anal area and deposits eggs, which become infection in 4-6 hrs.

Question 2

Enter VERMIcularis (vermicelli) is transmitted via

Answer 2

P to P
envt (bedding)
kids, big cities

Question 3

asCARis Lumbricoides

Answer 3

stir fry
intest or duct blockage/obstruction
Pulm: Loefflers’ remain in lung, block alveoli -> resp distress

ingest eggs, lavrae released in DUAD, penetrate mucosa, via BLOOD to lungs, into alveoli, up trachea, back to MATURE IN DUAD for 2nd time.
Adults’ produce eggs that become INFECTIVE in SOIL (18d - wks)
Adults live 2 yrs

Question 4

AsCARus Lumbricoides where infectious?

Answer 4

stir fry
eggs in SOIL

VIA: ingest soil, kids, warm

Question 5

Trichuris Trichiura (Trick)

Answer 5

whip worm
Egg capsules (resist drugs)
RECTAL PROLAPSE
kids: Anemia, decreased growth

Sx: asx - light inf
if severe: painful pooping (with BLOOD, muc, h20)

INFECTIVE eggs ingested and lavrae release in DUAD, matures in COLON, released eggs mature in SOIL.

Question 6

Necator Americanus

Answer 6

lavrae penetrate SKIN, ground itch (which travels), BLOOD-filled LESIONS, destroys RBCs,

Bl loss -> anemia

Question 7

Necator AMericanius infectious stage

Answer 7

feed on BLOOD in intestinal mucosa, lavrae penetrate SKIN
INF eggs hatch in soil
- infective stage LAVRAE (FILARIFORM) pen’s SKIN and via blood to lungs, etc, matures in DUAD.

Eggs hatch and mature in SOIL

Question 8

STRONGiloides Stercoralis

Answer 8

2 multiplication cycles:
in host (parasitic)
in soil (free living)

-INF’ve LAVRAE in SOIL (released thru feces) can penetrate the SKIN (Like Americanus)
-FREE living multiplication cycle in SOIL
Inf: D, pain, constipation, MALABSORBTION

Question 9

STRONGiloides Stercoralis sx

Answer 9

D, pain, constripation MALABSORBTION

Question 10

Which 2 halmiths penetrate the skin?

Answer 10

Necator AMericanus (INF eggs and LAVRAE (FILARIFORM), Blood filled lesions, -> anemia)
STRONGyloides stercoralis (2 cycles: in host (parasite), in soil (free living); D, pain, constipation, MALABSORBTION; INF've lavrae in soil can penetrate skin; AUTOINFECTIVE bc stays in host, doesn't need to go to soil)

Question 11

Flukes CHLOnorchis SINenSIS (Chloe)

Answer 11

have 2 intermediate hosts, 1 definitive

• suckers and hemaphroditic
• Adults have BILIARY DUCTS (withstand bile)
• fish with encysted LAVRAE
• Asx, chronic in imm.

Question 12

Tapeworms: Tania SAGINATE (cow) and Tania Solium (pig)

Answer 12

• have SCOLEX (head) and Proglottis (releases eggs that are immediately infectious)
• CYSTICERCI (lavrae) in muscle of cow or pig develop into adult in Jejunum.
• infectious eggs released in Feces
• asx or mild GI

Question 13

Tania Solium

Answer 13

• CYSTICERCOSIS in ingest INF’ve eggs DIRECTLY from soil (instead of meat muscle)
• asx or spreads to other body parts: brain lesions, etc

Question 14

Diphyllobothrium Latum (fish worm)

Answer 14

• B12 -> anemia
• asx (via humans and fish)
• single egg released, not in proglottis
• develop and hatch in H2O
• Great Lakes, ALASKA
• infective LAVRAE in muscles of fish, eggs realeased in feces, hatch in H2), consumed by other fish, etc