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Fetal pig dissection diagrams digestive8/28/2023 ![]() The jejunum and the ileum both are sites of absorption and are lined with villi and microvilli, which increase the surface area and can absorb the nutrients digested by the duodenum. Small Intestine: The site where most of the digestion and absorption of nutrients takes place, it is made of the duodenum, the jejunum, and the ileum.ĭigestion occurs in the duodenum and involves many different enzymes that break down the nutrients even more. Some of the liver’s other functions include detoxifying poisonous chemical substances such as caffeine and alcohol, and stores glycogen, vitamin A, B12, D, and fats. Liver: The liver is the largest organ in the body and produces many enzymes and bile, which is stored in the gall bladder and contains bile salts that break down fat globules. Gastrin, a hormone that is released into the blood as a signal to produce more HCl and pepsinogen, is also produced in the stomach and stimulates the stomach to contract. The stomach lining produces rennin, an enzyme that coagulates milk proteins, and is made of mucous secreting cells, cells that protect the stomach from its acidic contents. Gastric juice is called pepsin (pepsin is created from pepsinogen in the presence of HCl) and it, along with HCl, is responsible for breaking down proteins. This J-shaped organ secretes gastric juices that prepare the food for digestion. Stomach: The stomach stores about 1 – 2 L of food for about 4 hours. State the function of the following organs: The fetus also uses the umbilical cord to dispose of any wastes left in his/her body. Which receives nourished oxygenated blood from the heart and the small intestines and delivers it to the fetus. The umbilical cord is the fetus’ way of getting oxygen, nourishment, and nutrients in order to grow. What is the function of the umbilical cord? ![]() The body tissue cells will run out of oxygen for ATP and thus the entire body will slow down. If the heart doesn’t get this oxygenated blood quickly then it cannot deliver fast enough to the various parts of the body. For instance, the heart and the lungs are very close together because the heart needs oxygen for the blood very quickly. It showed the organization of the pig’s internal organs and the significance of the position of each organ. This experiment allowed biology students to learn, in a hands-on way, about the many systems of the body. In future experiments, it would be better to have a smaller pig so that the incisions are much cleaner and easier to perform. The skin and muscle were far thicker and harder to cut through than all the other pigs and resulted in the scalpel not cutting properly. Due to the large size of the pig, it was more difficult to create accurate incisions on the ventral side of the pig. Some experimental errors that occurred during the experiment dealt mainly with the pig’s skin and the incisions. It was surrounded by the lungs protectively and was very muscular due to the constant pumping of blood. Also, the heart was found to be smaller than previous expectations. This could be due to the amount of time the pig was preserved for. However, the discoloration of the organs was quite unusual. The pig dissection was a learning experience that allowed students to distinguish the many organs and organ systems in the pig’s body and, ultimately, the organs and organ systems of the human body.Īlthough the pig fetus was larger than what was expected, the procedure went well and all the necessary parts of the pig were visible. Pigs are complex organisms with an internal structure similar to that of the human body. Pig preserved in Formaldehyde (a colorless, toxic water-soluble gas that is used to preserve the pig and its organs).* These exercises are available in thee Book via Connect Anatomy & Physiology and also online for instructor distribution see Instructor Resources via Connect Library tab. Permission Request – College/University. ![]()
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