Chaoter 7: The Laboratory Animal Environment

Question 1

What disease is found in rats that have been exposed for extended periods to low humidity (less than 30%) and high temperatures?

Answer 1

Ringtail

Question 2

List three reasons animal rooms must be properly ventilated

Answer 2

1- prevent accumulation of waster gases
2- helps maintain the temp and humidity
3- reduces the accumulation of airborne microorganisms

Question 3

List five factors can influence the ventilation needs in an animal room

Answer 3

1- species of animals 
2- size of animals
3- number of animals
4- type of bedding used
5- frequency of cage changing

Question 4

Which of the following waste gases are prevented from accumulating when animal rooms are properly ventilated?
A- hydrogen and helium
B- nitrogen sulfur dioxide
C- oxygen and nitrous oxide
D- ammonia and carbon dioxide

Answer 4

D- ammonia and carbon dioxide

Question 5

When you open the door to a room and air enters the room what type of pressure is this?

Answer 5

Negative pressure

Question 6

When you open the door to a room and air exits the room what type of pressure is this?

Answer 6

Positive pressure

Question 7

What kinds of studies might occur in a negative pressure room?

Answer 7

Animal quarantine and animals experimentally infected with disease-causing microorganisms

Question 8

Name two negative effects animals might experience if their daily lighting schedule is changed

Answer 8

1- may stress the animals

2- may affect breeding efficiency

Question 9

What effect could high noise levels have in rabbits?

Answer 9

Jump

Question 10

What effect could high noise levels have in rodents?

Answer 10

Reduce breeding

Question 11

What term refers to the environmental conditions within an animal’s pen or cage?

Answer 11

Microenvironment

Question 12

The relative humidity in animal rooms should be maintained within what range?

Answer 12

30% to 70%

Question 13

What types of animals are especially light sensitive?

Answer 13

Albino animals

Question 14

Light from what spectrum has the least effect on animals’ physiology if they are exposed to it during the dark period?

Answer 14

Red

Question 15

Where should sterile surgery on a nonhuman primate be performed?

Answer 15

Survival surgery room

Question 16

Where should changing cages be performed at?

Answer 16

Animal housing room

Question 17

Where should eating a snack take place?

Answer 17

Break room

Question 18

Where should changing into scrubs and applying makeup take place?

Answer 18

Locker room

Question 19

Where should you euthanize a cage of mice?

Answer 19

Procedure room