Dissection of Rabbit.pptx

In this slide, I am discussing about the dissection of rabbits. you can consider it as a practical as well.

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. Skull:

15. Jaws: