1st LLE Flashcards

1
Q

The process whereby calcium and bile salts are removed from the specimen

A

Decalcification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

These specimens contain some amount of calcium that will interfere with the evaluation and examination of histological sections

A

Tuberculous lungs and teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Most widely used agent for routine decalcification because they are stable, readily available, and inexpensive

A

Acids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

This is inferior compared to nitric acid and its role as decalcifying agent because of its slower action and greater distortion of the tissue

A

Hydrochloric acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Substance which combine with calcium ions to form complexes and facilitate removal of calcium salts

A

Chelating agents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Very expensive although the most ideal, most sensitive, and most reliable method of determining the extent of decalcification due to its ability to detect even the smallest focus of calcium

A

Radiological method

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Done by touching or bending with the fingers to determine the consistency of tissues

A

Mechanical test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Involves the detection of calcium and acid solutions by precipitation of insoluble calcium hydroxide or calcium oxalate

A

Chemical method

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A process whereby positively charged calcium ions are attracted to a negative electrode and subsequently removed from the decalcifying solution

A

Electrical ionization and Electrophoresis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A very weak decalcifying solution suitable only for minute pieces of bone

A

Sulfurous acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Cause allergic reactions in a substantial proportion of exposed subjects not just in hypersensitive individuals

A

Sensitizers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Substance that can induce tumors not only in experimental animals but also humans

A

Carcinogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Capable of causing death by ingestion, skin contact, or inflammation at certain specified concentrations

A

Toxic materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Chemicals that cause reversible inflammatory effects at the site where living tissue especially with the skin, eyes, and respiratory passages

A

Irritants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A contrast-enhancing technique that improves quality of the image obtained with a birefringent material then compared to other techniques

A

Polarized light microscopy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Refers to any microscope that uses fluorescence to generate image

A

Fluorescence microscope

17
Q

An optical microscopy illumination technique in which a small phase of light passing through a transparent specimen is converted into amplitude or contrast phase images

A

Phase-contrast microscopy

18
Q

Used to observe the unstained and transparent samples causing them to be clearly visible and appears brightly lit against a dark, almost purely black background

A

Dark-field microscopy

19
Q

Used in compound microscope where light is either passed through or reflected off the specimen.

A

Bright field microscope

20
Q

Yellow colored can be neutralized by this reagent and then thoroughly washed with running tap water

A

5% sodium sulfate

21
Q

An environmental toxin that is highly corrosive to the skin and mucous membranes. It is also carcinogenic

A

Chromic acid

22
Q

Recommended concentration for the aqueous nitric acid solution

A

5-10%

23
Q

Other term for Flemming’s fluid

A

Chromic acid

24
Q

Most common chelating agent with a commercial name Versene

A

Ethylenediaminetetraacetic acid

25
Q

In what pH will EDTA not bind to the calcium?

A

Below pH of 3

26
Q

This hastens decalcification by removing calcium ions from formic acid containing decalcifying solutions thereby increasing solubility of the tissue

A

Ion exchange resins

27
Q

This fresh examination tissue removes not only cells but also a small amount of the surrounding tissue which provides additional information to assist in the examination of the lesion

A

Core needle biopsy

28
Q

Recommended for routine post mortem tissues

A

Formol-sublimate

29
Q

Involves the use of a circular blade that is rotated down through the epidermis and dermis and into the subcutaneous fat yielding 3-4mm cylindrical core of tissue sample

A

Punch biopsy

30
Q

Permits the movement of stage while holding the slide in the phase of focus

A

Stage

31
Q

Process of submitting an already fixed tissue for further fixation

A

Secondary fixation

32
Q

Eyes are not easily penetrated due to tough sclera

A

Formol alcohol

33
Q

Used to fix touch preparations

A

Isopropanol