necropsy Flashcards
Why do a necropsy on livestock?
- heard health/safety
- food safety
- reproduction/production
- environmental factors (toxins, feeds)
- genetic diseases (breeding decisions)
- zoonotic diseases (public health)
why do a necropsy on companion animals?
- closure for owner
- suspect foul play
- forensic pathology (animal cruelty, law enforcement)
- clinical trials
- confirm diagnosis
ratio of formalin to tissue needed for adequate fixation and why this is important
10 parts formalin (10%) to 1 part tissue (10:1)
tissue samples no more than 5mm thick
formalin only penatrates 2.5mm per 24 hours
ratio of formalin to tissue needed for adequate fixation and why this is important
10 parts formalin (10%) to 1 part tissue (10:1)
why freezing the body is contraindicated prior to necropsy
ruptures tissues, affects tissue morphology, destroys CNS
appropriate size and thickness of tissue samples for adequate fixation and why this is important
tissue samples no more than 5mm thick
formalin only penatrates 2.5mm per 24 hours
which side do you lay the animal down on?
left side down
except horse is right side down
ratio of cortex to medulla of adrenal gland
1 cortex: 2 medulla: 1 cortex
how to slice kidney
do not bread loaf
longitudinally then 2 parallel cuts thorough middle
what is the pluck?
thoracic viscera
* tongue
* esophagus
* trachea and larynx
* thyroid/parathyroid
* lungs
* heart
