Two major vessels come from aortic arch: Bracheocephalic trunk: Splits to send to right forelimb + head. Aortic arch: Part of aorta that arises from left ventricle. Branches to transport blood to all major organs. Aorta: Largest artery in circulatory system. Pulmonary trunk: Begins at right ventricles. Superior vena cava: Runs from upper body of pig to right side of heart. Inferior vena cava: Runs from liver and lower part of body to right side of heart. Remove pericardium carefully to isolate heart. Furthermore, the heart is surrounded by thin, transparent membrane called pericardium. The heart is found between the two lungs and protected by rib cage. Thoracic cavity is area between incisions 3 and 5. #PIG DISSECTION DIAGRAMS SKIN#To expose thoracic cavity, fold back skin above thoracic cavity and hold back via dissecting pins for better view and dissecting. Carefully snip away mesentery and unravel.ġ2. When locating small and large intestines, observe the thing film that holds them together. Remove stomach by cuts at junction with esophagus and small intestine, specifically, the duodenum. The spleen is located on left side of fetal pig, found near outer curvature of stomach. Moreover, the pancreas is best reached by lifting junction of stomach and small intestine. It is a finger-shaped gland, and creamy white in colour. The pancreas is located toward the back wall of the abdominal cavity. Furthermore, the anterior portion of the stomach is in conjunction with the esophagus, whereas the posterior portion of the stomach is in conjunction with the duodenum. Stomach located beneath liver, on left side of fetal pig. Liver located near front of abdominal cavity.ħ. *You may want to use scalpel to cut through skin, and hold down skin through dissecting pins.ĭiagram of fetal pig and organs of abdominal cavity This can be done by pulling apart flaps at INCISION 5. *May want to feel for ribs when cutting INCISION 5.ĥ. INCISION 5: Cut between thoracic and abdominal cavity. INCISION 4: Cut towards posterior portion of abdominal cavity. INCISION 2: Cut towards posterior surface. To effectively expose the inner organs of the fetal pig, make 5 incision cuts: INCISION 1: 10-15cm incision in front of umbilical cord towards head. If one sees a genital papilla, she is a female. If one sees the scrotal sac, he is a male. Sex of pig can easily be determined through viewing posterior view of pig. Then, tie the pig for ease of dissection therefore it willn’t move during dissection. Place fetal pig on back, exposing the dorsal surface. The table below determines age via length.Ģ. Use string to measure pig from tip of snout to base of tail. Gurjot, Manvir and I had hypothesized that the fetal pig’s internal systems should be slightly alike, due to the fact that pigs are on the same level food chain as us humans. In addition to this, the fetal pig dissection helps students better interpret the relative position and sizes of organs, as well relation between organ and organ system. The purpose of the fetal pig dissection was to understand the scientific process of dissection and gain hands-on experience of the internal and external anatomy of the fetal pig. Dissecting animals helps students better understand the anatomy of, in this case, a fetal pig, and helps us prepare for what University has to offer, depending on what one will study.
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