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Bearded Dragon Gross Anatomy

This dissection is of a juvenile dragon that died due to impaction in late 2003. An owner brought this dragon to me long after the damage was done.  Problems with the cloaca were noticed by the owner approximately one month prior to getting help. Even after warm baths to loosen the blockage, there was really nothing that could be done. The dragon passed away within 12 hours of being brought to me.  I preserved the dragon until I was able to do the autopsy.   I found that the intestine was filled with crushed walnut substrate and one worm was found in the abdominal cavity. 

Pogona vitticeps

Dissection and photos by Kristin King

July 11, 2005

 

Juvenile specimen

Death:2003

Dorsal view

Juvenile specimen

Side view

Lab table

Ventral view

         

Ventral view

Ventral view

Ventral view

part of skin pinned back exposing the intestine

Ventral view

Opening the ventral cavity

Ventral view

Notice there is no rib cage but rather a cartilaginous rib plate protecting the vital organs in the thoracic region.

         

Chest cavity

Ventral view

Internal organs exposed

Ventral view

 

Ventral view

Lungs lifted by probe

Ventral view

         

Thoracic cavity

Rib plate held back exposing the liver and heart superior to the other visceral organs, with heart inferior to liver.

 

Esophagus

Heart removed

 

 

         

Lungs

 

Lungs and heart

Lungs

under the stereoscope

Lungs

under the stereoscope

 

 

         

Heart

under the stereoscope

Heart with liver attached

 

Heart with liver attached

 

Ventral view

Ventral view

         

Ventral view

Stomach exposed

Stomach exposed with intestine stretched out

Ventral View

Infected cloaca

Ventral View

Infected cloaca

         

Parasite

Worm found in abdominal cavity

Image seen under stereoscope

Parasite

Viewed in petri dish

Genus and species not determined

Parasite

Worm seen on dark surface actual side

Intestine

Crushed walnut particles fill organ

Intestine

Notice the crushed walnut substrate totally blocking passage to the cloaca

 

         

Intestines

Crushed walnut substrate removed from the intestines

         

Hollowed out cloaca region

Hollowed out cloaca region

Hollowed out cloaca region

 

Empty abdominal cavity

Spinal chord exposed

         

Ventral view of head

Ventral view of head

Top teeth exposed in roof of mouth

Mouth

Notice hole inferior to the tongue, this is the esophagus

Roof of mouth

Nares in roof of mouth, teeth also visible

         

Side view of head

Teeth are surrated like a steak knife; also visible: tympanium

Top teeth exposed

 

Dorsal view

Exposing eye socket

         

Dorsal view

Skin removed from top of head exposing eye sockets

Side view

Lens of eye exposed

Side view

Lens of eye exposed

 

Eye

         

Eye socket

 

Ventral side

Head removed and trachea visible

Posterior view of head

Spinal chord, gullet and trachea

 

         

Brain

Brain

T-pin next to brain to compare size

     
         

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