The conclusions I've drawn from this experiment were how closely related the chicken leg is to a human's leg, and how they work compared to us. The chicken leg has muscles in almost the same spots as us, on their thigh and calf. our tendons and ligaments function the same, but just on a chicken leg. The first thing i saw was the muscles, and they were pink and in similar spots to humans. I found it weird that the chicken’s leg muscles stretched and contracted at one point, also that electrical impulses were sent to tell those muscles to move. Even though it was just a leg the quadriceps still twitched/contracted when we squeezed it. The next thing i seen were all the two types of blood vessels, and the differences between them. Next I seen
The unknown bacterium that was handed out by the professor labeled “E19” was an irregular and raised shaped bacteria with a smooth texture and it had a white creamy color. The slant growth pattern was filiform and there was a turbid growth in the broth. After all the tests were complete and the results were compared the unknown bacterium was defined as Shigella sonnei. The results that narrowed it down the most were the gram stain, the lactose fermentation test, the citrate utilization test and the indole test. The results for each of the tests performed are listed in Table 1.1 below.
Abstract: The objectives of this lab was to identify the internal and external anatomy of the fetal pig. The experiment was conducted by dissecting a fetal pig and actively seeing the external anatomy, Oral Cavity, Digestive System, Circulatory System, Respiratory System, Urogenital System, and Nervous System.
In the muscular system the main differences between minks and humans are mostly the size and shape of each muscle. However, for example the temporalis differs in that it has different locations within the mink and human. In minks the temporalis is located on the dorsal side of the skull while, in humans it is located on the later side. Also the romboideus complex muscles differ in location as well. In humans these muscles are located in the upper section of the dorsal side while, in minks they are found closer to the neck. Another example of differing locations if that of the levator scapulae. Though the functions are the same which is to elevate the scapulae and shoulders, in humans it is located in the upper section of the dorsal side of the body behind the neck. In minks the levator scapulae is located lower down the back. The main similarities of the muscular system between minks and humans are both the name and functions of the muscles. For instance, the masseter elevates the mandible which helps in raising the lower jaw to close. Also there are the obliques and transversus abdominis that encloses the abdomen while the diaphragm separates the thoracic and pelvic cavities. The gastrocnemius muscles also have similar functions between the mink and humans which are the plantar flexion of the foot at the ankle and the flexion of the leg at the knee joint.
There is common plan for all limbs: one bone, followed by two bones, then a bunch of little bones, and finally digits. This array of bones is seen in many species including, but not restricted to bats, whales, and lizards. But how do these limbs develop and why do they all look similar? Shubin explains it by conveying that there are certain genetic switches that help assemble who we are. When scientists went looking for this genetic switch in limbs, they found a couple tissue areas in the limbs that allow this body plan to occur. “A strip of tissue at the extreme end of the limb bud is essential for all limb development…This patch of tissue was named the zone of polarizing activity (ZPA).” ZPA allows humans to have opposable thumbs and pinkies. In other organisms, it differentiates the “thumb” side from the “pinky” side. Scientists then wanted to discover the molecule that allowed this changen in the ZPA, the answer is Sonic hedgehog. Shubin points out that every limbed animal h...
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.
If you read different studies believe it or not, but current research shows that the nervous system has the capability to modify fiber typ...
To calibrate the thermometer that I bought from Irvine Valley College, I followed the steps given by my Astronomy 20 teacher, Roy McCord. First, I purchased distilled water. I then found a reliable source, to research the point at which water freezes and boils in Celsius. Water freezes at 0°C and boils at 100°C.
In the beginning Pigott felt unusual. But when time passes, she starts to observe their ideas to believing them herself. She feels open-minded. Pigott begins to see European tourists as “strange and skeletal….devoid of shape and substance.” She started to see the way of beauty and she completely transformed herself into a Gambian women.
LAB REPORT 1st Experiment done in class Introduction: Agarose gel electrophoresis separates molecules by their size, shape, and charge. Biomolecules such as DNA, RNA and proteins, are some examples. Buffered samples such as glycerol and glucose are loaded into a gel. An electrical current is placed across the gel.
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.
Eating too much is a huge problem for many Americans and some of the reasons for this problem are actually quite straight forward. The video, Chicken Wing Study, presents a few ways including eating food directly from the bag rather than placing it into a serving dish first. Another way to overeat that the video mentions is eating while being distracted by other activities. The video discusses one other way that leads to overeating, being near food. This is a phenomenon that I have experienced directly while living in a studio apartment. I was always a few steps away in direct line of site from the kitchen, I would constantly binge eat because food was always so easily accessible.
The Cell, the fundamental structural unit of all living organisms. Some cells are complete organisms, such as the unicellular bacteria and protozoa, others, such as nerve, liver, and muscle cells, are specialized components of multicellular organisms. In another words, without cells we wouldn’t be able to live or function correctly. There are Animal Cells and Plant Cells. In Biology class the other day we studied the Animal Cell. We were split into groups of our own and we each picked a different animal cell slide to observe. My group chose the slide,'; Smeared Frog Blood ';.
Alcamo, Edward, and Krumhardt, Barbara. Anatomy and Physiology The Easy Way. Hauppauge, New York.: Barron’s Educational series, inc. 1996
...ll human organs and the systems that they belong to. "This would be the most revolutionary type of alternative, especially for human related experiments"().