To pin the animal, we used etcher’s twine and secured the front and hinds legs using a “lasso” technique, careful not touch the sharp claws. To make the first incision had to locate the Oxford Process of the rat (distal aspect of the sternum). Once I had located the Oxford Process, I had to use forceps to pull the skin of the animal’s abdomen up and use the scissors to cut. The first incision is made from stem to sternum, cutting through the rectos abdomen muscle down to the groin. The second incision ion is perpendicular to the first below the diaphragm.
Essay Example on Disection Of Rat
Because of this technique we were able to open the abdominal cavity first. The third and forth incisions were made bilaterally above the legs. The last two incisions were made in upside down “V’ shape on the collarbone, to expose the thoracic cavity. This dissection was both sharp, because of the use of the scissors and escape and blunt because of the use of the probe and forceps to move organs and skin to expose other organs not yet identified. SKIN: Yellowish in color covered with white fur, hard and stiff in texture LARYNX: Off white in color.
Long tubular structure descending from the upper area (mouth) of the rat. TRACHEA: Pinkish in color, looked like a stack of cartilage rings with some space twine the rings. LUNGS: Dark reddish brown in color. It had 6 lobes. One on the left side, 2 lobes in the middle, and 3 on the right side. HEART: Located inferior to the trachea and superior the diaphragm and liver, light pink in color. It appeared to be the size of a lima bean, surrounded by a bright pink rubbery substance, said to be a ruptured blood vessel.
The left and right atrium was dark brown and located at the coronal end of the heart. It appeared that there was only one ventricle which was light brown in color. AORTA: Located superiority he heart between the two atrium, was reddish n color and bean-shaped, the Even Cave was attached at the dorsal side of the ventricle, and it was blue in color with a threads appearance. SPLEEN: Located inferior to the one lobe of the liver, lateral to the stomach. It was dark brown in color, vertically lengthened, flat and smooth.
THYMUS GLAND: Located superior to the heart, surround the trachea, pinkish brown in color and bean shaped. ADRENAL GLAND: superior to the kidneys, they are small and light brown in color DIAPHRAGM: Medial area of the rat, separating the thoracic cavity from the abdominal cavity. It was tan in color, thin, sturdy, but still quite flexible in Truckee. LIVER: Inferior to the diaphragm, dark brown with 7 lobes, three lobes on both sides with one lobe on the underside of the liver. It appeared to be the largest internal organ of the white rat. STOMACH: Beige in color, kidney bean shaped.
Anterior to the liver, “full” to the touch as if it was filled with matter. It was 1 h “vertically, and 1 h” horizontally In size. DUODENUM: Connected at the top of the stomach and below to the small intestine, whitish in color with a long, flat balloonist appearance. PANCREAS: Inferior to the liver and stomach, light brown in color, the pancreas as long and it’s appearance resembled many different small particles held together in a single membrane. MESSENGER: Inferior to the liver, thin transparent in color, resembling a cross section of cauliflower.
It couldn’t be determined if it contained the small intestines but it was visible to note that they were beige in color and looked like a pile of worms stuck together. ESOPHAGI: Pinkish in color, thin tissue-like structure that was cited around the tracheal area and descended to the area of the stomach. GREAT MOMENTUM: Beige in color, looked like actual kidney beans, quite hard and slippery. The left kidney appeared to be attached to the posterior wall, while the right kidney was not as close to the all as the left.