Helena Vassiliades A & P 4th Dr. Welch May 17, 2016 Cat Dissection LAB I. Introduction: Dissection is important and valuable to the avid scientist because the best way to understand and figure out how a system works is to see it. Comparative anatomy concerns the subject area of dissecting a mammal close in relation to another and then comparing the different structures found in each dissection. David Brookes, a member of a board of education in Carolina, recommends, “If you want kids to learn something, they need to actually see it” (Brookes). In this case, I studied a cat and compared it to a human. It is a smart idea to dissect cats because unlike the common frog or rat, it is a relatively large, yet conveniently small mammal that provides almost the exact same structures as a human internally. I think using a cat is an excellent subject to specifically study and compare to humans because cats’ systems are very similar to humans and they are a mammal like humans. II. System Review A. Skeletal Because of a cat’s non bi-pedal nature (it walks on all fours) and a drastically different method of mobility, a cat’s skeletal system isn’t exactly just like a human’s. Human’s shoulders aren’t as narrow as cats because cats have to move around on all fours and squeeze through spaces; cat’s …show more content…
The hydrochloric acid in the stomach breaks down the sugars within the ingested food and chemically simplifies them. The acid is produced by the liver and is stored in the gall bladder (behind and under the liver). The now called bile then travels to the small intestine where vital nutrients are absorbed by the body and proteins are broken down in the duodenum. The large intestine is the next section and it absorbs all the water still retained in the processed material. When every possibly useful thing to the body is stripped from the bile, the substance is then excreted by the body through the rectum and
Gallstones form when the liquid stored in the gallbladder hardens into pieces of stone-like material. The liquid, called bile is used to help the body digest fats. Bile is made in the liver, and then stored in the gallbladder until the body needs to digest fat. At that time, the gallbladder contracts and pushes the bile into a tube—called the common bile duct—that carries it to the small intestine, where it help with digestion.
Dissection has one essential as they give students a hand on experience. How can you get a degree to be a veterinarian if you never had a hand on experience? Contrast, you can see things you’ve been curious about. Even though they are trying to learn about animals, it’s still abusing. In an ethical eye, they can quickly absorb the looks and physical appearance of the inside of an innocent animal. On the positive side, it can be for a good cause like if animals could have cancer or they could have a deadly, unknowable, clueless, incurable disease. What if they cut that animal open and the bacteria and disease is released? Therefore, they need to pick a different strategy for dissecting animals in all vet schools.
The stomach naturally produces acid, which is mainly responsible for food digestion and the destruction of any foreign pathogen or bacteria ingested with food. Acid is secreted by stimulating the partial
come along, this is when the bile is released to digest the fat. The same
Although cats and dogs are both animals they are different in many ways from, showing love, grooming, vaccinations, food, and vet care. To me dogs are more loveable than cats. However, cats are cheaper when it comes to grooming, vaccinations, and food. Owners treat and take care of their dogs better than their cats. I have always been more of a dog person even though they are expensive.
The digestive system otherwise known as the gastrointestinal tract (GI tract) is a long tube which runs from the mouth to the anus. It operates to break down the food we eat from large macromolecules such as starch, proteins and fats, which can’t be easily absorbed, into readily absorbable molecules such as glucose, fatty acids and amino acids. Once broken down, these molecules can cross the cells lining the small intestine, enter into the circulatory system and be transported around the body finally being used for energy, growth and repair.
The bile that is made in the liver travels to the small intestine by the bile ducts (these are small, tube-like structures where they carry bile from the gall bladder and empty it into the first part of the small intestine, called the duodenum). However, if the small intestine doesn’t need the bile, it will enter the gall bladder where it waits for a signal from the intestines that the food is present.
...ve eaten, to break down the food into a liquid mixture and to slowly empty that liquid mixture into the small intestine. Once the bolus has entered your stomach it begins to be broken down with the help of the strong muscles and gastric juices which are located in the walls of your stomach. The gastric juices are made up of hydrochloric acid, water, and mucus- and the main enzyme inside of your stomach is what is known as pepsin, which needs to be surrounded in an acidic setting in order to do its job, that is to break down protein. Once the bolus has been inside of your stomach for long enough it begins to form into a liquid called chyme, and what keeps the chyme from flowing back into our esophagus are ring shaped muscles known as sphincters located at the beginnings and ends of the stomach and they have the task of controlling the flow of solids and liquids.
Imagine you are eating a sandwich containing wheat bread, ham, lettuce, and Swiss cheese. Do you ever wonder where the nutrients go from all of the previous listed ingredients? Well, when a bite of this sandwich is taken, the mouth produces a saliva enzyme called amylase. This enzyme immediately goes to work by breaking down the carbohydrates that are in the bread. Once, the bite is completely chewed, the contents then are swallowed and go down the esophagus and begin to head towards the upper esophageal sphincter and the is involuntarily pushed towards the stomach. The next passage for the sandwich is to go through the lower esophageal sphincter; which transports the sandwich into the stomach.
Mink Intro – External Anatomy Overview. (n.d.). mreroh.com . Retrieved May 27, 2014, from http://www.mreroh.com/student/apdocs/Dissection/Intro%20-%20External%20Anatomy.pdf
In Labs 22 through 26, my lab partner and I were assigned a fetal pig to perform a dissection on in order to understand anatomy, the study of an organism’s structure1, and physiology, the study of the functions and activities of a living organism2. Throughout these labs, we studied the structure of the fetal pig and performed experiments to understand four system processes: digestion, cardiovascular, respiratory, and excretory. Dissecting an organism, physically moving and seeing the different portions of the organism, especially of a fetal pig, is very important. This helps in the understanding of the skeletal structure and what series of physical and chemical processes the mammalian species body performs in order to survive.
For many cat owners, their cat’s impulse to scratch can become a disastrous problem. Cat owners believe that the only logical solution is to have the cat declawed. It’s natural for cats to scratch and use their our claws to live their daily lives. Cats use their claws to play, climb, and in many situations as a form of self-defense. So the question that presents itself, is it really necessary for cat owners to have cats declawed. The only problem with declawing cats is that it is unnecessary and inhumane mutilation. Many cat owners should be more aware take advantage of the other safer and more humane alternatives for their cats.
It holds a juice that contains digestive enzymes like trypsin,it helps digest protein foods, the juice is called, pancreatic juice. It also holds amylase and maltase, they mash down carbohydrates. And finally it also holds lipase, it works with bile from the liver to digest fat. Bile is made in the liver but held in the gallbladder, a little pitted organ found just below the liver. Bile does not have enzymes instead, it holds mostly acids, salts, cholesterol, and other materials that work with lipase to break down fats.
Ask any of your grandparents if animal dissection was in use in their days of school. Chances are, it was. Since then color was added to the TV, computers have become smaller and smaller, we have mobile phones that fit in our pockets, and medical fields have made huge strides. Yet for the most part, classroom dissection hasn’t changed one bit. The method of animal dissection commonly used today is far past expired (i...
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” technique, careful not touch the sharp claws. To make the first insicion I had to locate the Xifoid Process of the rat (distal aspect of the sternum). Once I had located the Xifoid Process, I had to use forceps to pull the skin of the animal’s abdomen up and use the scissors to cut. The first incision is made from stem to sternum, cutting through the errectos abdomen muscle down to the groin. The second incision ion is perpendicular to the first below the diaphragm. Because of this technique we were able to open the abdominal cavity first. The third and forth incisions were made bilaterally above the legs. The last two incisions were made in upside down “V” shape on the collarbone, to expose the thoracic cavity. This dissection was both sharp, because of the use of the scissors and scapel and blunt because of the use of the probe and forceps to move organs and skin to expose other organs not yet identified.