3.3 - TRICHURIS TRICHIURA

Question 1

other name

Answer 1

Triocephalus trichiura

Question 2

common name

Answer 2

human whip worm

Question 3

final host

Answer 3

man

Question 4

habitat

Answer 4

large intestine

Question 5

MOT

Answer 5

ingestion of eggs

Question 6

infective stage

Answer 6

embryonated egg

Question 7

diagnostic stage

Answer 7

egg

Question 8

• 30-45 mm
• coiled posterior with single spicule and retractile sheath

Answer 8

male adult

Question 9

• 35-50mm
• blunt posterior end

Answer 9

female adult

Question 10

secretory cells

Answer 10

stichocytes

Question 11

entire esophageal structure with stichocytes

Answer 11

stichosome

Question 12

egg shape

Answer 12

football, barrel, lemon, Japanese lantern shape

Question 13

unique diagnostic feature

Answer 13

bipolar refractile plugs at both ends of the egg

Question 14

• size: 50 to 54 um by 23 um
• yellowish outer and transparent inner shell

Answer 14

general moprhology of eggs

Question 15

unsegmented ovum

Answer 15

bile stained

Question 16

inner shell

Answer 16

non-bile stained

Question 17

outer shell

Answer 17

bile stained

Question 18

life cycle

Answer 18

1. mouth
2. small intestine
3. large intestine (adults)
4. copulation
5. stool
6. soil
7. embryonation

Question 19

Larvae are released and mature into adults in the colon, where they attach and survive up to ?

Answer 19

10 years

Question 20

Female adults: Lays ? eggs per day

Answer 20

3,000-7,000 eggs

Question 21

trichuris infection

Answer 21

Trichuriasis

Question 22

bleeding because it is attached to mucosa and would feed off the body

Answer 22

petechial hemorrhage

Question 23

intestinal bleeding (how much blood loss?)

Answer 23

0.005mL per day

Question 24

notable characteristic of trichuris infection

Answer 24

rectal prolapse

Question 25

- rectum comes out of the perianal region that would harbor parasites - anus will be flipped inside out

Answer 25

rectal prolapse

Question 26

other clinical manifestations

Answer 26

reduced intellectual and cognitive development in children

Question 27

virulence factor

Answer 27

TT47 protein

Question 28

- pore-forming protein - allows them to embed their whip-like structure or embed themselves to the intestinal walls of the patients

Answer 28

TT47 protein

Question 29

diagnosis

Answer 29

- DFS - kato thick - kato katz - concentration test

Question 30

highly recommended diagnostic test

Answer 30

kato thick smear

Question 31

determines the intensity of the trichuris infection

Answer 31

kato katz

Question 32

extremely efficient in demonstration of eggs

Answer 32

zinc flotation method

Question 33

3rd most common roundworm of humans

Answer 33

Trichuris trichiura

Question 34

Children ? of age are the most commonly infected

Answer 34

5-15 years

Question 35

treatment

Answer 35

albendazole

Question 36

increases contact time between drug and parasites in diarrheic patients

Answer 36

Loperamide HCl