Safety

Question 1

true or false histopathology department has far higher injury-risk then the micro/chemistry department?

Answer 1

True

Question 2

Name the 4 major classes of hazards in histology?

Answer 2

• Biological/infectious
  -mechanical
  -chemical
  -health/physical

Question 3

what are the four classifications of infectious waste?

Answer 3

• Pathologic material
• blood
• microbiological or culture specimens
• sharp objects

Question 4

Define the permissible exposure limit?

Answer 4

maximum safe concentration of exposure to hazardous chemical such as formaldehyde.

Question 5

How do you measure the permissible exposure limit?

Answer 5

with the time weighted average

Question 6

Define what is the ceiling limit

Answer 6

Maximum permissible “instant” exposure to toxic substances at any time of the work shift

Question 7

What is the PEL of formaldehyde?

Answer 7

0.75 ppm

Question 8

What are the three things chemicals should be evaluated for?

Answer 8

• carcinogenic potential
• reproductive toxicity
• acute toxicity

Question 9

What are the 5 health hazards?

Answer 9

• Biohazards
• irritants
• corrosive chemicals
• sensitizers
• carcinogens

Question 10

Define a a chemical classified as a biohazard?

Answer 10

potential to cause disease in humans

Question 11

Define a chemical classified as an irritants?

Answer 11

• Can cause inflammatory effects at exposure site.

Question 12

Define a chemical classified as corrosive?

Answer 12

Have the potential to damage metals and cause irreversible damage at exposure site.

Question 13

Define a chemical classified as a sensitizer?

Answer 13

causes allergic reactions

Question 14

Define a chemical classified as a carcinogen?

Answer 14

cancer causing, develop malignancies

Question 15

List the 4 kinds of physical hazards?

Answer 15

• Combustibles
• Flammables
• Explosives
• Oxidizers

Question 16

What are examples of an insidious chemical?

Answer 16

• Ethers
• Mercury
• Picric acid

Question 17

What is so dangerous about insidious chemicals?

Answer 17

develop gradually and are very harmful

Question 18

Define the lethal low dose (LD50).

Answer 18

lowest dose reported to have caused death in humans

Question 19

What is a Class A fire?

Answer 19

ordinary combustibles
- paper
- wood
- plastic

Question 20

What is a Class B fire?

Answer 20

flammable liquids and gases

Question 21

What is a Class C fire?

Answer 21

Electrical

Question 22

What is a class D fire?

Answer 22

combustibles and reactive agents
- difficult to contain
-ease spreading + explosions