Pig Dissection Lab Report

In this experiment, the external and internal structures of a sheep’s heart was examined and identified by dissection. To determine the functionality of a human heart since they are both mammals.

The dissection of fetal pigs in the laboratory is extremely important as pigs are complex organisms with an internal structure much similar to the human body. This provides students to with the opportunity to receive insight on how their bodies work. In addition, they will also be given the opportunity to learn about evolution through the dissection of a pig.

The procedure consisted of external anatomy. We were asked to exam several characteristics of the unborn pig which includes: determining the age of the fetus by measuring the body length from its snout to the rump, examine the amount of hair on body, examine the lips, nostrils, ears, eyes, feet, chest, stomach, nipples and sexual organs. The procedure also consisted of internal anatomy which includes the oral cavity, digestive system, circulatory system, respiratory system and urogenital system.

1.Use your scissors to cut off the pink or white fat/muscle around the cow eye.

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. 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.

All organisms have different digestive systems, respiratory systems, and circulatory systems. They all need to digest their food, breathe, and circulate their blood, but how do they do it? You will learn how the Human Body, Crayfish, Earthworm, and Frog do those things, and what the similarities and differences are.

In the fetal pig, the heart was enclosed in a pericardial cavity, with the right and left lungs on each side of it (Freeman, et. al). The mediastinum, which includes the pericardium, the esophagus, the trachea, and other structures separates the thoracic cavity into right and left sides (Field, pg. 11). The muscular diaphragm separates the thoracic cavity from the abdominal pelvic cavity, where the digestive and urinary systems are located (Field p. 11). As we worked through the dissection we were able to observe each organ system individually and look deeper into all of the anatomical structures that play a role in its function.

The fetal pig dissection was helpful for one to understand the body and all of the body’s functions. The procedures helped the students precisely do the dissection correctly. The questions that were assigned helped the students have a deeper understanding of the pig’s body. This dissection also helped the students become familiar with some of the organs in the body like the liver, heart, and intestines. All in all, this dissection was helpful in learning all about the body.

Which don’t seem alike in features and characteristics, but through the insides of the anatomy shows differences and similarities. One of the differences I can quickly take off the list is that worms breathe out of their skins while humans breathe out of their lungs to their nostrils. Worms breathe out of their skin is because since they live in the dirt in which they would have to breath out of their skin. Another thing is that in the circulatory system in the worm, the blood mostly circulates through the vessels and the aortic vessels are the heart components in the worm. The human circulatory system is that the heart is the main component to the system and is the muscle used to pump blood.

The respiratory system is made up of organs and tissues that help you breathe. The main parts of this system are the lungs, the trachea, the diaphragm, alveoli and nasal cavity. The respiratory system starts with the mouth and the nose, where air is brought in, then passes through the larynx and the trachea into the chest cavity. http://www.nhlbi.nih.gov/health/ health-topics/topics/hlw/system The main organs of the respiratory system are lungs, which carry out this exchange of gases as we breathe. The

Our mouth, esophagus, stomach, pancreas, liver, gallbladder, large intestine, small intestine, rectum, and anus come together to form the digestive system which breaks down our food into simpler molecules. The food enters through the mouth, travels down the esophagus, breaks down in the stomach, pancreas, liver, and gallbladder and then moves through the intestines down to the rectum and anus. A pig’s digestive system is no different than a human’s. A foregut, midgut, hindgut, and a digestive gland form the digestive system of a crayfish. The foregut contains the stomach (partially breaks the food down), the

In courses such as biology, anatomy, and physiology, learning the anatomy of a human is imperative to learning about its functions and processes. Due to a lack of money, resources, and access, UConn cannot provide the use of a human cadaver for educational purposes. Since we lack actual human specimens, the next best thing is the fetal pig. The reasoning behind the choice of a fetal pig is because it is extremely similar to the anatomy of a human, with a few minor differences of course. A study at Cambridge

Sus scrofa, or the domestic pig is a member of the class Mammalia and the order Artiodactyla. Since we as humans are also a member of class Mammalia, we have a good deal in common biologically with pigs, although we might not like to think so. Since we have a good deal in common, it is very helpful for us to study these animals both anatomically and physiologically. We do this when we test medicines on pigs, perfect surgical procedures on pigs, and even when we used to use pig valves for replacements in human hearts. Thus the pig is a first-rate example of a mammal and the purpose of this lab is to recognize the specific similarities between the pig and ourselves as humans. To accomplish this we

The diaphragm is located in the fetal pig attached to the body wall and it serves to separate the abdominal cavity from the chest cavity.

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”