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HISTOCYTE > CLEARING > Flashcards

CLEARING Flashcards

1
Q

What is the main purpose of clearing in histology?
A. To stain the tissue
B. To dehydrate the tissue
C. To remove the dehydrating agent and replace it with a solvent
D. To infiltrate the tissue with paraffin

A

C

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2
Q

Which of the following is NOT a clearing agent?
A. Xylene
B. Glycerin
C. Toluene
D. Chloroform

A

B

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3
Q

Which of the following acts only as a dealcoholizing agent but not a clearing agent?
A. Glycerin
B. Chloroform
C. Xylene
D. Terpineol

A

B

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4
Q

Which of the following is used for both clearing in embedding and clearing in mounting?
A. Xylene
B. Chloroform
C. Brun’s solution
D. Carbon Tetrachloride

A

A

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5
Q

Which clearing agent is recommended for delicate tissues like nervous tissue and lymph nodes?
A. Xylene
B. Benzene
C. Chloroform
D. Cedarwood oi

A

C CHLOROFORM

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5
Q

Which of the following is NOT suitable for use in clearing before mounting?
A. Xylene
B. Terpineol
C. Carbol-xylene
D. Chloroform

A

D CHLOROFORM

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6
Q

Which clearing agent can turn milky when dehydration is incomplete?
A. Xylene
B. Benzene
C. Toluene
D. Cedarwood oil

A

XYLENE

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6
Q

Which of the following causes aplastic anemia upon excessive exposure?
A. Xylene
B. Benzene
C. Chloroform
D. Cedarwood oil

A

BENZENE

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7
Q

Which clearing agent is commonly used for CNS, smooth muscles, and skin?
A. Xylene
B. Cedarwood oil
C. Chloroform
D. Benzene

A

CEDARWOOD OIL

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8
Q

Which of the following is used to clear tissues embedded in celloidin?
A. Xylene
B. Benzene
C. Cedarwood oil
D. Terpineol

A

CEDARWOOD OIL

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9
Q

Which clearing agent is recommended for large specimens and tough tissues?
A. Chloroform
B. Xylene
C. Benzene
D. Cedarwood oil

A

CHLOROFORM

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10
Q

Which clearing agent can emit toxic fumes when concentrated solutions are used?
A. Xylene
B. Benzene
C. Toluene
D. Chloroform

A

TOLUENE

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11
Q

What is the typical boiling point’s role in the clearing process?
A. It affects the rate of tissue transparency
B. It determines the solubility of paraffin
C. Low boiling point agents are replaced quickly by paraffin
D. It prevents the tissue from hardening

A

C. Low boiling point agents are replaced quickly by paraffin

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12
Q

Which clearing agent is most suitable for clearing delicate tissues like embryos and insects?
A. Aniline oil
B. Xylene
C. Benzene
D. Cedarwood oil

A

ANILINE OIL

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13
Q

Which clearing agent is known to clear slowly and may cause aniline dye removal?
A. Xylene
B. Clove oil
C. Benzene
D. Cedarwood oil

A

CLOVE OIL

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14
Q

Which agent is a substitute for cedarwood oil and acts slowly due to high viscosity?
A. Terpineol
B. Xylene
C. Benzene
D. Chloroform

A

TERPINEOL

15
Q

What should be done to cedarwood oil before use if it has turned milky?
A. It should be heated
B. It should be discarded
C. It should be filtered
D. It should be mixed with xylene

A

It should be filtered

16
Q

Which clearing agent is commonly used for routine purposes and doesn’t cause excessive hardening?
A. Toluene
B. Benzene
C. Chloroform
D. Cedarwood oil

A

TOLUENE

17
Q

Which of the following is a disadvantage of using benzene as a clearing agent?
A. It is extremely slow
B. It is carcinogenic
C. It turns milky upon storage
D. It is not miscible with paraffin

A

CARCINOGENIC

18
Q

Which clearing agent is derived from essential oils and is found in citrus peels?
A. Xylene
B. Terpenes
C. Cedarwood oil
D. Aniline oil

A

TERPENES

19
Q

Which clearing agent can cause tissues to float, requiring the use of absorbent cotton gauze?
A. Xylene
B. Chloroform
C. Benzene
D. Cedarwood oil

A

CHLOROFORM

20
Q

Which clearing agent is known to cause slow penetration due to high viscosity?
A. Xylene
B. Benzene
C. Cedarwood oil
D. Toluene

A

BENZENE

21
Q

Which clearing agent can be used in both embedding and mounting procedures but is slower than xylene and benzene?

a) Toluene
b) Chloroform
c) Cedarwood oil
d) Xylene

A

TOLUENE

22
Q

Which clearing agent must be followed by immersion in xylene or benzene to remove oil from tissues?

a) Chloroform
b) Toluene
c) Cedarwood oil
d) Benzene

A

CEDARWOOD OIL

23
Q

Which clearing agent is known for being toxic to the liver on prolonged inhalation?

a) Benzene
b) Xylene
c) Chloroform
d) Toluene

A

CHLOROFORM

24
Q

Which clearing agent turns milky if dehydration is not complete and is used in both embedding and mounting?

a) Xylene
b) Toluene
c) Benzene
d) Cedarwood oil

A

XYLENE

HISTOCYTE (4 decks)

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