#Fetal pig dissection diagrams labeled skin

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.

#Fetal pig dissection diagrams labeled skin

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 organ systems control basic functions of life and without one, all cannot perform. Upon dissection, they see the heart, the major organ in the circulatory system that pumps the oxygenated blood around the body the lungs, the major organ in the respiratory system that provides oxygen to the deoxygenated blood coming from the heart and the small intestines, the major organ in the digestive system that digests the food and absorbs the nutrients from the food. This pig dissection is designed to visually show students the different systems inside a pig and, indirectly, their own bodies. Pigs are similar to humans through the fact that they have skin, not fur or feathers, they are omnivores, and when they are fetus they receive nutrients from an umbilical cord connected to the mother, so it is natural to pick such an animal to compare to the human organ systems.Īlthough the size of the fetus pig is smaller than that of the human body the organization of the major organs and the functions of such organs are still the same. Pigs, one of the most similar animals to humans, have been used to inform and teach students about the circulatory, respiratory, and digestive systems through a procedure called a dissection for many years.