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Laboratory Animal Science (LAS) Final Exam Version
- Newest 2025/2026 With Complete 150 Questions And
Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!
What is the common name for Chromdacryorrhea? What gland produces the chemical that causes this condition? What is the name of the chemical? When might you see this condition? - ANSWER-Chromodacryorrhea is an abnormally or excessive amount of red tear production.The red tears are colored by porphyrin which is created in the harderian gland.Chromodacryorrhea is usually seen when an animal is stressed or ill.
Steps to Gavaging - ANSWER-1. Measure from the diastema to the most caudal rib
- Enter through the diastema from the side
- Straighten the needle out so it is parallel with the head
- Advance the needle back over the tongue
- Tip the syringe back so animal's head is tipped back
- Allow the needle to slide in 1 / 3
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- Deliver
- Gently remove needle and give the animal a break
What are the reasons medications are delivered by gavaging? - ANSWER-We deliver medication, food or fluids via gavage when an animal is not eating due to illness or trauma. We also deliver testing material via gavage in the laboratory setting; specifically to rats because they cannot vomit.
What are some problems that can occur when oral gavage is administered improperly? - ANSWER-If there is too much force exerted when completing a gavage the esophagus can be punctured or the needle can be accidentally placed in the trachea.If the liquid is delivered prior to being fully placed, the animal can aspirate the fluid.
You are breeding a Brother-Sister mating of 2 B6D2F2 mice.The male is brown and the female is tan.What are the correct Genotype possibilities, (future offspring)
for these two mice? - ANSWER-Male's genotype(s): bbDd,
bbDD
Female's genotype(s): bbdd 2 / 3
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How do we sex guinea pigs? - ANSWER-By examining the genitalia
Guinea Pig Scientific Name - ANSWER-Cavia Porcellus
Guinea Pig Dental Formula - ANSWER-2(I1/1, C0/0, P1/1, M3/3)
What teeth in the guinea pig are open rooted? - ANSWER-All of the teeth
What type of ovulator is the guinea pig? - ANSWER- Spontaneous
Is the guinea pig covered by the AWA? - ANSWER-No
What are some uses in research of guinea pigs? - ANSWER- Cancer Toxicities Behavior
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