Unit 5:The Mouse Flashcards
genus species of mouse
mus musculus (Mus=theif)
organ used in mice to detect pheromones, located in roof of mouth
vomeronasal organ (Jacobsons organ)
what is brown fat
hibernation fat, has increased blood flow for warmth
spot behind eye which we can draw blood from
what is this called in rats?
orbital sinus
rats= retro-orbital plexus
what is barbering
when dominant mouse pulls hair from face and body of other mice
when female mice develop nipples
9 days old
how many pairs of nipples females have
5
why rodents mice commonly get abdominal hernias
have an open inguinal canal which allows the spermatic cord to pass thro
whitten effect
group of females synchronize estrus cycles in presence of male
bruce effect
recently bred females may abort pregnancy when exposed to strange male (usu w/in 4 days of breeding)
what may cause cannibalism of neonates in mice
high-pitched sounds, little nesting material, and if disturbed; you should leave then 2 days undisturbed, preferably a week
what is the “milk spot” on neonate mice
see full stomach on left side of abdomen in healthy mice
how are nude mice produced? what research are they useful in
occur naturally (genetic defect), have deficient immune systems therefore useful in immune studies and cancer research
how to diagnose pinworm
do take prep on perianal region
what causes tyzzers
poor sanitation, overcrowding, stress
why tyzzers is hard to get rid of
produce spores, gram neg
what is Sendai virus
resp infection, compromises immune system, deadly
what is ectromelia
mouse pox, affects v old and v young mice
3 forms of ectromelia
acute- diarrhea, conjunctivitis, swelling of face and extremities, fatal
chronic- cutaneous rash leading to swelling and limb necrosis
Latent- older mice only, harbor in intestinal tract and spread (carriers)
how to do intraperitoneal injection
diff between rat and mouse
anesthetize, scruff in dorsal recumb., point head towards floor, insert needle in lower right quadrant in mice (avoid spleen)
lower left in rats to avoid cecum
why we do not withhold food before anesthetizing mice
fast metabolism, would go in shock
mice (and rats) have __ digits on front feet __ digits on back
4 front, 5 back
difference between galbladder in mice and rats
rats do not have, mice do
mouse lifespan
12-36 months
