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Exam 4: Processing and Embedding

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Question 1

Multiple Choice

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Calcium and other calcified materials may be removed from the tissue by any of the following agents, except:

A) Acids
B) Electrophoresis
C) Chelating agents
D) Oils

Correct Answer

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D

Question 2

Multiple Choice

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This is a disposable, thin plastic embedding mold that is available in 3 different sizes.

A) Plastic ice trays
B) Paper boats
C) Peel away
D) None of the above

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Question 3

Multiple Choice

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What clearing agent is commonly used for both embedding and mounting procedures?

Which of the following best describes the process used in decalcification whereby positively charged calcium ions are attracted to a negative electrode and subsequently removed from the decalcifying solution?

All of the following are disposable embedding molds, except:

What process is preferred for processing whole eye sections?

All of the following statements are true about the ideal characteristics of a clearing agent, except:

This is the process by which the infiltrate tissue is place into a precisely arranged position in a mold containing a medium which is then allowed to solidify.

Which of the following agent is recommended for central nervous system tissues and other cytological studies?

This is the procedure whereby lime salts are removed from the tissues following after fixation.

All of the following statements are true about clearing agents, except:

The paraffin oven is maintained at what temperature?

This is a purified form of nitrocellulose soluble in many solvents.

What clearing agent should be used when the tissue is to be cleared directly from water, as in a frozen section?

This type of embedding mold is normally utilized for embedding celloidin blocks, but is equally useful for paraffin wax blocks.

All of the following statements about ion exchange resins are correct, except:

This is the process whereby the clearing agent is completely removed from the tissue and is replaced by a medium that will completely fill all the tissue cavities.

What is the purpose of 1% phenol in Gelatin impregnation?

Which of the following choices is an excellent dehydrating agent?

This type of clearing agent rapidly clears tissues but it is extremely toxic to man and may be carcinogenic. What clearing agent is this?