1: Taxonomy, Anatomy, Physiology Flashcards
Class and order of rabbits
Class Mammalia, Order Lagomorpha
How are lagomorphs different from rodents?
of incisors (6 vs 4), and lighter skull structure
Hares belong to which genus?
Lepus
Confusing names of rabbits/hares
Jackrabbits are hares. Belgian hares are rabbits.
Differences between rabbits and hares
Rabbit young are altricial. Hare young are precocial. Longer palate in rabbits. Hares are larger and have longer ears.
The only lagomorph to be domesticated
Oryctolagus cuniculus
Ears make up what % of total body surface area?
12
What are peg teeth?
Secondary incisors
Diastema is flanked by which teeth?
Incisors and premolars, space is formed by the absence of canines
Name the # and pairs of salivary glands
4 pairs - parotid, submaxillary, sublingual, zygomatic
Which salivary gland is useful for research?
Parotid (very large)
What prevents vomiting?
Well-developed cardiac sphincter
Striated muscle of esophagus extends to where?
Cardia
Stomach makes up what % of GI volume?
15%
Terminal ileum empties into which structure?
Sacculus rotundus
What does the sacculus rotundus contain?
Lymphoid aggregates
Cecum makes up what % of the GI?
40%
Vermiform appendix
Blind, narrow tube at end of cecum - has many lymphoid aggregates
Pacemaker of the colon
Fusus coli - regulates passage of ingesta into the colon
Cecotrophs are rich in which nutrients?
Vitamins, minerals, nitrogen
Rabbits secrete what form of bile?
More biliverdin than bilirubin
How does the rabbit kidney compare to other mammalian species?
More primitive
Which minerals are excreted by the rabbit kidney?
Calcium and magnesium
Rabbits are what kinds of ovulators?
Reflex ovulators
Temperature range for rabbits
61-80 deg F
Which mutation is thought to contribute to hydrocephalus?
hy/hy
Which mutation causes paralytic tremors?
pt
Describe CNS hypomyelination
Hypomyelination of white matter
Inheritance of buphthalmia
bu/bu - autosomal recessive with incomplete penetrance.
cat-1/cat-1 mutation causes what?
Cataracts - bilateral lens opacity
cat-2/cat-2 mutation causes what?
Cataract - unilateral lens opacity
Which mutation causes mandibular prognathism?
mp/mp - autosomal recessive with incomplete penetrance
What is the most common inherited disease of rabbits?
Mandibular prognathism
Osteopetrosis
Small rudimentary incisors
Increased bone density
Heritance of osteopetrosis
os/os, autosomal recessive
Which enzyme breaks down atropine?
Atropine esterase
Mutation for Pelger Huet Anomaly
Pg/pg, Pg/Pg (autosomal partial dominant)
Disease with Pg/Pg only
Mutation for hereditary lymphosarcoma
ls/ls (autosomal recessive)
Pregnancy toxemia incidence is highest in which breeds?
Dutch, Polish, English breeds
Tx for pregnancy toxemia
LRS, cal gluc, 5% dextrose, steroids
Predisposing factors for ulcerative pododermatitis
Size, poor sanitation, wire bottom, thin fur pads
Uroliths are frequently caused by which minerals?
Ammonium magnesium phosphate, calcium carbonate
Which injectable anesthetics cause cardiomyopathy in rabbits?
Ketamine/xylazine
