1.10.1 Dehydration

Question 1

Routine Dehydrating agent

Answer 1

Ethyl alcohol

Question 2

Important requirement when using alcohol as dehydrating agent

Answer 2

Use of ascending/Increasing conc. of alcohol

Question 3

NOTE:

The ascending conc of Alcohol:

70% , 80% , 95%

This prevent destruction of tissue, para di mabigla

Question 4

For Dehydrating sections and smears

Answer 4

Methyl alcohol (Methanol

Question 5

Fast acting, non toxic

Answer 5

Ethyl alcohol

Methanol - Toxic

Question 6

Toxic by ingestion, inhalation and by skin contact

Highly corrosive on skin

Toxic to reproductive, fetal, urinary system

Answer 6

Cellosolve (Ethylene glycol monoethyl ether)

Question 7

Dehydrating agents:
1. Alcohol
2. Cellosolve
3. Dioxane
4. THF

T or F

Answer 7

T

Question 8

Dehydrating agent whose main disadvantage is its being toxic

Answer 8

Dioxane (Diethylene dioxide)

Question 9

Decomposes whe expose to sunlight

Answer 9

Cellosolve

Question 10

Temp that will hasten dehydration time

Answer 10

37 C

Question 11

Dehydrating agent that is both a skin and eye irritant

Has an offensive odor

Answer 11

Tetrahydrofuran THF

Question 12

Rapid-acting dehydrating suited for urgent biopsies but not for routine tissue processing

Answer 12

Acetone

Question 13

Acetone dissolves easily and dissolves fats

T or F

Answer 13

T

Question 14

Alcohol for plant and animal microtechniques

Answer 14

Butyl alcohol

Question 15

Purpose of phenol in alcohol bath?

Answer 15

Soften hard Tissues