White Rat Dissection Lab Report
GOALS:
Learn about the anatomy of the White Rat.
Gain dexterity with instruments used in the dissection procedure.
Compare and /or contrast the anatomy of the White Rat with that one of the Human body.
MATERIALS AND INSTRUMENTS:
Cadaver of a White rat, preserved in chloroform.
A dissection pan, Butcher’s twine, Bounty paper towels, latex gloves.
3. Instruments used in the dissection kit: Scissors; Forceps; Scalpel; and the Probe
PROCEDURE:
The first step was to obtain the White Rat and to tie it in the supine position, anterior surface facing up in side the dissection pan. To tie the animal, we used butcher’s twine and secured the front and hinds legs using a “lasso” technique, careful not touch the sharp claws. To make the first insicion I had to locate the Xifoid Process of the rat (distal aspect of the sternum). Once I had located the Xifoid 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 errectos abdomen muscle down to the groin. The second incision ion is perpendicular to the first below the diaphragm. 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 scapel and blunt because of the use of the probe and forceps to move organs and skin to expose other organs not yet identified.
OBSERVASTIONS:
INTEGUMENTARY SYSTEM
SKIN: Yellowish in color covered with wh...
... middle of paper ...
...al side of the kidney.
REPRODUCTIVE SYSTEM
The reproductive system was mainly located towards the anal area and inferior to the stomach. The penis was located in the middle. It was white in color and looked like a mealworm. The seminal vesicles were located on both sides of the penis. They were grayish pink in color and looked like walnuts.
COMPARE AND CONTRAST:
There were a few observations proven to be different between the rat’s anatomy in comparison to the human anatomy. First of all, the rat has no gallbladder present in it’s anatomy which a human does. Secondly, the rat’s lungs appeared dark red in color where as a human’s lungs are pink in color. Also the rat’s liver has more lobes as does their lungs compared to a human’s liver and lungs. Besides these said differences, the rat’s anatomy is basically very similar to that of the human body.
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