Frieda Carson Workbook - Processing (2) with complete solution
1 / 10
1. Which of the following is a dehydrating agent?
a) Formalin
b) Xylene
c) Benzene
d) Alcohol: Alcohol
2. A clearing agent for use in processin
...
Frieda Carson Workbook - Processing (2) with complete solution
1 / 10
1. Which of the following is a dehydrating agent?
a) Formalin
b) Xylene
c) Benzene
d) Alcohol: Alcohol
2. A clearing agent for use in processing tissues for paraffin embedding must
be miscible with the:
a) Fixative and paraffin
b) Dehydrant and paraffin
c) Fixative and dehydrant
d) Paraffin and water: Dehydrant and Paraffin
3. Dioxane is a reagent that can be used:
a) For both fixing and dehydrating tissues
b) For both dehydrating and clearing tissues
c) In very small volume ratios
d) For long periods without changing: For both dehydrating and clearing tissues
4. A reagent that CANNOT be used for dehydrating tissue is:
a) Benzene
b) Absolute alcohol
c) Dioxane
d) Acetone: Benzene
5. Most commonly, the paraffin used for embedding tissues is kept at approximately:
a) 37C
b) 52C
c) 60C
d) 65C: 60C
6. A disadvantage of the use of dioxane in processing tissues is that it is:
a) Toxic
b) Likely to harden tissue
c) Not miscible with water
d) Explosive: Toxic
7. The chief objection to the use of Xylene as a clearing agent for processing
tissues is that xylene is:
a) Likely to harden tissue
b) HydroscopicFrieda Carson Workbook - Processing (2) with complete solution
2 / 10
c) Only slightly miscible with paraffin
d) The most volatile of the hydrocarbons: Likely to harden tissue
8. A good paraffin for routine use is one with a melting point of:
a) 50C to 52C
b) 55C to 58C
c) 60C to 62C
d) 63C to 65C: 55C to 58C
9. Which of the following chemicals is NOT a clearing agent?
a) Chloroform
b) Dioxane
c) Ethanol
d) Xylene: Ethanol
10. Overheating of the paraffin used to embed may cause:
a) Air bubbles in the block
b) Cracking of the block
c) Distortion of the tissue cells
d) Poor infiltration: Cracking of the block
11. One advantage of the paraffin technique is that:
a) Hard objects cut easily
b) There is practically no tissue distortion
c) Serial sections are easy to obtain
d) Microtomy artifacts are uncommon: Serial sections are easy to obtain
12. When cutting paraffin embedded tissues, if the tissues seems hard and
brittle, one source of trouble is likely to be:
a) Inadequate fixation
b) Incomplete dehydration
c) Overheated paraffin
d) Poor infiltration: Overheated paraffin
13. The process of removing water from tissue is called:
a) Dehydration
b) Reduction
c) Oxidation
d Clearing: Dehydration
[Show More]
 with complete solution.png)
 with Complete Solution.png)
 Career Information with Complete Solution.png)
 for E-6 Career Information_watermark.png)
