Stool

Question 1

Most human parasites habitate the_____ and in terms of diagnosis the most common specimen handled in a parasitology laboratory is the

Answer 1

intestines

STOOL

Question 2

T or F

Oriental lung fluke may be seen in the stool in some cases

Answer 2

True

Question 3

Human feces is called as____.

Answer 3

STOOL

Question 4

Faeces / Feces is plural of latin term___ meaning______.

Answer 4

faex

RESIDUE

Question 5

Stool is the waste residue of_______ of an animal’s digestive tract expelled through the anus during_____

Answer 5

indigestible materials

defecation

Question 6

COMPOSITION of stool

Answer 6

● ¾ Water, ¼ Solid
● Undigested and Unabsorbed food ex . fiber/gulay
● Intestinal secretions/ mucus
● Bile pigments and Salts
● Bacteria and Inorganic material
● Epithelial cells, Leukocytes

Question 7

Our body cannot digest ____ because we don’t have the enzyme ___

Answer 7

Cellulose

Cellulase

Question 8

QUANTITY of stool

● Influence by the amount of ____ and _______ intake
●_______ diet increases the amount
● ______grams/day

Answer 8

water/ character of food

Vegetable

100-200

Question 9

As a laboratory diagnostician, what will you consider are important in relation to stool collection?

MASS

Answer 9

A. Medications
B. Stool containers
C. Stool Contamination
D. Amount

Question 10

What type of container should be used

Answer 10

Wide mouth and screw cap container

Question 11

Example of ciliate found in water (could contaminate the specimen)

Answer 11

Paramecium

Question 12

Medications

● Preparations like (3a) can mask the presence of parasites in the stool.

● Certain diagnostic procedures using (4) can produce the same effect

● Therefore, if stools turn out to be negative, there might be a need for a repeat examination after the diagnostic procedure or the treatment regimen is through.

Answer 12

antibiotics, anti-diarrheic drugs and antacids

bismuth, mineral oil, barium enema or gall bladder dyes

Question 13

PATENT HISTORY

Answer 13

Hometown
Where did they go
Drugs or medcations

Question 14

COLLECTION

Answer 14

● Universal Precaution

● It should be uncontaminated with Urine or any other body secretions.

● Properly named and always a fresh sample should be tested

Question 15

only found in urine

Answer 15

Schistosoma haematobium
Trichonomas vaginalis

Question 16

will degenerate in urine

Answer 16

trophozoites

Question 17

Stool samples are to be submitted in covered containers with a_____

Answer 17

wide mouth

Question 18

The cover prevents attracting insects specifically____, since ____ eggs might be mistaken for parasites.

Answer 18

flies

Question 19

_______ prevent fecal odor from filling up the whole area, while the ______allows one to get required amount of stool sample from the container with ease.

Answer 19

Stool container

wide mouth

Question 20

Example and function of mechanical vector

Answer 20

Carrier only

Drosophila melanogaster

Question 21

Drosophila melanogaster can carry

Answer 21

Entamoeba Histolytica
Ascaris Lumbricoides
Trichuris Trichuria

Question 22

The amount of the stool that should be submitted will depend on the_____ that will be performed

Answer 22

techniques

Question 23

For routine stool examination (____grams) of formed stools (usually____)

Answer 23

20-30 g/ half of the thumb

Question 24

______ tbsp of watery stool specimens.

Answer 24

2-3 tablespoons

Question 25

Stool contaminants

Answer 25

Soil
Urine
Toilet Water

Question 26

There are situations however when it is necessary to submit the whole stool movement like in cases where the laboratory likes to recover______ adults after treatment

Example of test

Answer 26

helminthic

Kato katz

Question 27

T or F

As a matter of fact, enough stool material will allow performance of a repeat examination or other techniques which will help confirm a diagnosis.

Answer 27

True

Question 28

Example of parasite with small egg output

Answer 28

Schistosoma japonicum

400-2,000 eggs per day

Need to collect 1 stool per day (3days)

Question 29

Average egg output of Ascaris lumbricoides

Answer 29

20,000