ALAT Chapter 7

What does the term microenvironment refer to?

• Environmental conditions within an animal room

• Environmental conditions with the animal's cage, pen or tank

• Environmental conditions within cage wash

• Environmental conditions within the entire animal facility

What is the air exchange rate per hour?

• 10 to 15 air exchanges per hour

• 20 to 30 air exchanges per hour

• 5 to 10 air exchanges per hour

• 30 to 40 air exchanges per hour

Which way does air flow under positive pressure?

• Air in the hallway flows into the room

• Air flows upward

• Air flows downward

• Air in the room flows out toward the hallway

Name some of the factors that affect water quality?

• Temperature, lighting, flow, amount of fish in tank and water pressure

• Conductivity, pH, amount of free radicals, and type of fish

• Chlorine/chloramine, pH, temperature, conductivity, water hardness, dissolved oxygen, nitrogenous wastes, and lighting

• Amount of fish in tank, chlorine/chloramine, flow, dissolved oxygen and types of gloves the technician are wearing

What does the term bioexclusion mean?

• Barrier that prevents all infectious agents from leaving the room

• The exclusion of all biological agents from an animal facility

• Barrier prevents the entry of all infectious agents from getting into a room

• Barrier that prevents select agents from getting into a room

What does the term conditioning mean?

• Animal adjusting to their new surroundings

• Excluding an animal from a facility until its condition is checked

• Performing a physical on an animal

• Keeping an animal in quarantine until an animal health status is checked

How far does feed and bedding need to be away from the wall?

• Minimum of 12 inches

• Minimum of 6 inches

• Minimum of 3 inches

• Minimum of 8 inches

What are the three types of holding systems for fish

• Suspended, static or closed and free flowing

• Flow-through, tanks and filtered water

• Static or closed, flow-through and recirculating

• Recirculating, suspended and tanks

Excepted humidity range in animal rooms?

• 10-60%

• 20-70%

• 30-80%

• 30-70%

What ions does water hardness measure?

• Iron and Calcium

• Calcium and magnesium

• Magnesium and Fluoride

• Potassium and Iron