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Dissection of Rabbit
(Oryctolagus cuniculus)
Dr. Shabana Naz
Classification:
 Phylum : Chordata
 Sub-Phylum : Vertebrata
 Class : Mammalia
 Order : Lagomorpha
 Genus : Oryctolagus
 Species : cuniculus
Oryctolagus cuniculus
Digestive System:
The first incision opened up the abdominal cavity. The digestive organs were the
largest and most obvious physical features.
 esophagus
 stomach
 small intestines (265 cm long)
 large intestines (40 cm long)
The initial cut into the abdominal
cavity exposes the small and
large intestines, and the lower
part of the stomach.
The organs of the abdominal cavity removed: small and
large intestines, stomach, and the liver.
Unraveled, the small intestines
measured approximately 265 cm in
length. The large intestines were 40
cm long.
Cutting into the stomach reveals some of
the rabbit’s last meal. The pH is close to 1.
Pancreas
The esophagus connects the
mouth to the stomach. As
such it runs through the
thoracic cavity, behind the
lungs, and through the
thoracic diaphragm to get to
the stomach.
The diaphragm is the sheet of
skeletal muscle used for
breathing that separates the
abdominal and thoracic
cavities.
Excretory and Water Regulation Organs:
Also in the abdominal cavity are the excretory/water regulation organs.
 Kidneys
 Urinary Bladder
 ureters (from kidneys)
 urethra (going out)
The kidneys and ureter can
be seen in the abdominal
cavity.
The urinary bladder
can be seen in the
lower abdominal
cavity. It is most easily
visible if it still
contains some urine.
Reproductive system:
 ovaries
 Uterus
OR
 testes
 penis
Ovary, fallopian tube,
and uterus from
dissected rabbit.
Thoracic Cavity:
Cardiovascular system:
The thoracic cavity is opened up after the abdominal cavity by cutting through
the bones of the chest.
 heart
 capillaries
 heart valves
The heart and major arteries (e.g.
the aorta) can be seen in the
thoracic cavity.
Respiratory System:
 lungs
 trachaea
 diaphram
Only the organs of the
respiratory system in the
thoracic cavity were identified.
Note that the heart is also
visible, as are the stomach and
liver at the left of the image.
Slicing through the lungs
reveals some of its internal
structure.
Skeletal System:
 vertebra
 ribs
 sternum
 pelvic girdle
 scapula
 clavicle
Removal of the organs of
the major cavities reveals
the ribs and sternum
(which had to be cut
through to get into the
thoracic cavity) and the
spinal column.
Skull:
Jaws:

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Dissection of Rabbit.pptx

  • 1. Dissection of Rabbit (Oryctolagus cuniculus) Dr. Shabana Naz
  • 2. Classification:  Phylum : Chordata  Sub-Phylum : Vertebrata  Class : Mammalia  Order : Lagomorpha  Genus : Oryctolagus  Species : cuniculus Oryctolagus cuniculus
  • 3. Digestive System: The first incision opened up the abdominal cavity. The digestive organs were the largest and most obvious physical features.  esophagus  stomach  small intestines (265 cm long)  large intestines (40 cm long) The initial cut into the abdominal cavity exposes the small and large intestines, and the lower part of the stomach.
  • 4. The organs of the abdominal cavity removed: small and large intestines, stomach, and the liver.
  • 5. Unraveled, the small intestines measured approximately 265 cm in length. The large intestines were 40 cm long. Cutting into the stomach reveals some of the rabbit’s last meal. The pH is close to 1. Pancreas
  • 6. The esophagus connects the mouth to the stomach. As such it runs through the thoracic cavity, behind the lungs, and through the thoracic diaphragm to get to the stomach. The diaphragm is the sheet of skeletal muscle used for breathing that separates the abdominal and thoracic cavities.
  • 7. Excretory and Water Regulation Organs: Also in the abdominal cavity are the excretory/water regulation organs.  Kidneys  Urinary Bladder  ureters (from kidneys)  urethra (going out) The kidneys and ureter can be seen in the abdominal cavity.
  • 8. The urinary bladder can be seen in the lower abdominal cavity. It is most easily visible if it still contains some urine.
  • 9. Reproductive system:  ovaries  Uterus OR  testes  penis Ovary, fallopian tube, and uterus from dissected rabbit.
  • 10. Thoracic Cavity: Cardiovascular system: The thoracic cavity is opened up after the abdominal cavity by cutting through the bones of the chest.  heart  capillaries  heart valves The heart and major arteries (e.g. the aorta) can be seen in the thoracic cavity.
  • 11. Respiratory System:  lungs  trachaea  diaphram Only the organs of the respiratory system in the thoracic cavity were identified. Note that the heart is also visible, as are the stomach and liver at the left of the image.
  • 12. Slicing through the lungs reveals some of its internal structure.
  • 13. Skeletal System:  vertebra  ribs  sternum  pelvic girdle  scapula  clavicle Removal of the organs of the major cavities reveals the ribs and sternum (which had to be cut through to get into the thoracic cavity) and the spinal column.
  • 14.
  • 16. Jaws: