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Question 1

for routine paraffin sections, electron microscopy, histochemistry and enzyme studies

Answer 1

ALDEHYDE FIXATIVES

Question 2

gas produced by the oxidation of methyl alcohol

Answer 2

FORMALDEHYDE (FORMALIN)

Question 3

BUFFERED PH OF FORMALDEHYDE (FORMALIN)

Answer 3

7 TO 8

Question 4

leads to acidity which favors the formation of Formalin heme pigments

Answer 4

HYPOXIA IN TISSUES

Question 5

OTHER TERM FOR FORMALDEHYDE

Answer 5

FORMALIN

Question 6

black, polarizable deposits

Answer 6

FORMALIN HEME PIGMENTS

Question 7

PURE STOCK OF FORMALDEHYDE

Answer 7

40% FORMALIN

Question 8

DILUTION OF FORMALDEHYDE FOR 10% SOLUTION

Answer 8

1:10

Question 9

DILUTION OF FORMALDEHYDE FOR 5% SOLUTION

Answer 9

1:20

Question 10

CONCENTRATION OF FORMALDEHYDE FOR FIXATION

Answer 10

10%

Question 11

white precipitate due to prolonged storage

Answer 11

PARAFORMALDEHYDE

Question 12

REMOVAL OF PARAFORMALDEHYDE

Answer 12

1. FILTRATION

2. ADDITION OF 10% METHANOL

Question 13

ALDEHYDE FIXATIVES

Answer 13

1. FORMALDEHYDE (FORMALIN)
2. 10% FORMOL-SALINE
3. 10% NEUTRAL BUFFERED FORMALIN
4. FORMOL-CORROSIVE
5. ALCOHOLIC FORMALIN
6. GLUTARALDEHYDE

Question 14

central nervous tissues and general post-mortem tissues for histochemical examination

Answer 14

10% FORMOL SALINE

Question 15

ideal with most stains including silver impregnation

Answer 15

10% FORMOL SALINE

Question 16

DURATION OF FIXATION OF 10% FORMOL SALINE

Answer 16

more than 24 hours (slow fixative)

Question 17

preservation and storage of surgical, post-mortem and research specimens

Answer 17

10% NEUTRAL BUFFERED FORMALIN

Question 18

TYPES OF FIXATIVE

Answer 18

1. ALDEHYDE FIXATIVE
2. METALLIC FIXATIVE
3. PICRIC ACID FIXATIVE
4. GLACIAL ACETIC ACID
5. ALCOHOL FIXATIVE
6. OSMIUM TETROXIDE
7. TRICHLOROACETIC ACID
8. ACETONE