Analysis Of The Labtop: Rocky Rat Dissection

The heart is a major organ in the body, this organ pumps blood around the body, through veins, capillaries and arteries. The blood carries oxygen to our cells and also carries waste products which include water and carbon dioxide, which are products of respiration. Blood also helps spread out salts, enzymes, urea, nutrients, hormones and heat across the body.

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.

The body has different organs that work together and they make up a system such as the

- Human body is erect, with the feet only slightly apart, head and toes pointed forward, and arms hanging at the sides with palms facing forward.

Eventually, the stress made Rat snap and turned him from a brave medic to a paranoid and crazed man who desperately wanted to escape. He started talking on and on about bugs, “swarms of mutant bugs, billions of them, they had him bracketed. Whispering his name… all night long-- it was driving him crazy.”(209-10) He started scratching at his bug bites till they bled and even then he wouldn’t stop. It wasn’t just the bugs that stayed on his mind. His job as a medic had exposed him to countless corpses and injuries and “[he] start to picture how [his friends] look dead. Without arms or legs… he couldn’t shut off the pictures.”(211) Seeing so many dead and heavily injured people must’ve made him paranoid and fear for his own life because he also

1. It is predicted that the experimental rats will have the higher thyroid weight per gram body weight. The suppression of thyroid hormone production will cause the thyroid to grow in size causing a goiter

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.

At first on hearing we are doing a pig dissection I was pretty excited. I remember in seventh grade we did a frog dissection. I was okay with it, but I thought the frog was to small. Moving around in the frog was hard and was confusing. I was pretty excited about the pig dissection knowing that it will be bigger than the frog. I was not scared or nerovus about this dissection at all as it is a nice way to learn about other animals and species that live on Earth.

When performing the experiment observations were made in many things that could be compared between the animals such as Domain, kingdom, phylum, class, order, family, genus, species, features, respiratory and reproductive systems. while the hypothesis stated that if animals look alike externally then they are in the same phylum. The dissection of the Annelida (earthworm), Mollusca (clam), Echinodermata (starfish), Pisces/Osteichthyes (perch) and Amphibia (bull frog) proved different. The Annelida is bilaterally symmetrical, has a coelom it is fluid-filled cavity between outer body wall and gut.

Videos of proper dissection of the organisms were studied prior to the dissections to prevent any unnecessary damage to the organisms that could lead to errors in our data. For each organism, a scalpel was used to pierce the skin and a pair of scissors was used to open up the organism. If the organism had several layers of skin (i.e. the bullfrog and perch), then forceps and a scalpel were used relieve the tension and peel the layers away from the organs or the chest cavity. Once the external layers of the organisms were cut away from the organs, those layer were pinned back with dissection pins to assure the stability of organism and clarity of the dissection. The unneeded organs were cut out and discarded while important organs, those in

Although the rats lived in close proximity, they could neither see nor touch each other, because the sides of their cages were made of sheet metal. The only visual stimulation they got was seeing the people who brought food and water and cleaned the metal pans under their cages every few days. Unlike human prisoners, the rats did not even get an exercise period outside their cramped

The skeletal system is made up of cartilage and bone. Both bone and cartilage are connective tissues, that is, they are composed of cells in a matrix with intracellular fibers. Just imagine connective tissue as a gelatin salad with grapes and coconut. The grapes would represent cells, the gelatin the support material for matrix, and the pieces of coconut the intracellular fibers. By changing the amounts of each ingredient and adding extra substances, we can produce a material that is very hard like bone and can withstand weight or softer like cartilage which can be used as a cushioning material.

Compare and /or contrast the anatomy of the White Rat with that one of the Human body.

The construction of multiple universities across Europe triggered human dissection's return to the scientific community in the 12th century. (Siraisi 2005). Centuries had passed since the last officially sanctioned human dissection, and the practice finally returned when Mondino de Liuzzi dissected a human body in Bologna, Italy, and although this dissection did mark the practice’s return to the academic field, its procedure is also worth noting. At this time, dissections were performed by three people with very specific roles (Ghosh 2015). One, known as the lector, would read from a book written by a respected member of the field, another, called the Ostensor, would direct the dissection, and the third, the barber, would carry out the process (Ghosh 2015). These dissections, while important to the field in the sense that they increased interest, did not often lead to anatomical discoveries because the lector did not have a way to closely examine the body (Joutsivuo).

The main goal for many agricultural producers across the country is to annually improve the quality of their stock. For certain companies such as Cargill and JBS who are two of the largest protein distributors across the globe, an improvement for their stock could be reaching their end point faster. For other operations involved in the purebred or show aspect of the industry improving the quality could mean producing better structured animals who are larger framed.