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Regeneration of planarian
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During the planaria experiment my intentions for my flat worm was to cut it in-between the eyes to give it two heads. Before making the dissection the first thing that had to be done was to feed the planaria, so it had the energy to regenerate. During the dissection it was quite difficult to try to cut the planaria right in-between the eyes. It took around 10 minutes and even the use of a microscope to try to make the cut. Eventually I was able to make the cut and it looked as if it would grow into two heads. While trying to make the incision on the planaria I had accidentally cut out some of the guts because it wouldn't stop moving around. When I did my cut in the first week I didn't cut down far enough and the next week I noticed that the planaria had started to regenerate as one head instead of two. At this time, I re did the cut and cut further down. I noticed that when I was making the initial cut that when I cut a part of its gut out it started to form. Which led to an extra planaria beginning to grow in the dish. The second planaria was able to regenerate because one planaria has the embryonic ability to regenerate itself from 279 pieces. …show more content…
When I was changing the water I accidentally cut off one of the planaria's heads. Since I chopped it's head off, my initial intention was to have a single planaria with two heads and have ended up with three different
“The Tequila Worm” by Viola Canales is a marvelous book that shows the story of a young girl named sofia;on her journey to explore life but to never forget where she came from her roots which means becoming a good comadre.
Dr. Nagami had multiple reasons for writing the Woman with a Worm in Her Head. I think that she intended to educate the reader about many things. She wanted to highlight the background of the deadly diseases that she has encountered. She also wants to explain the limits of modern medicine. I also think that she wanted to put a human face on the patients that she encounters on a daily basis. She also was trying to explain how combating diseases like this and her profession as a medical doctor affected her.
On the container, the researchers wrote down their first initial, last name and lab section. The researchers then poured spring water into the cylindrical container about halfway and then set it aside. Next, the researchers transferred the Planarian using a small plastic pipette into an empty petri dish filled with just enough water for the Planarian to swim around freely. After the successful transfer into the petri dish The researchers then measured how long the Planarian was using the unit millimeters.
Once the external anatomy was observed the pig was then laid down on the dissection pan and held down by rubber bands exposing the ventral side of the pig. Then the cardiovascular and digestive systems were analyzed. The fetal pig did in fact have small teeth which were fairly sharp. Before the lab I wasn’t aware of the intricate details of the mouth cavity or that the kidneys were underneath the intestines. The hardest part was locating the trachea and the gall bladder. Additionally actually feeling the heart and various parts of the fetal pigs internal anatomy made learning the parts of the body
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
The 2006 Pura Belpré Award was presented to Viola Canales for her coming-of-age tale, The Tequila Worm. Set in a Mexican American community in MacAllen, Texas, this story is told from the point-of-view of Sofia, a young girl who has many adventures in her small community. Through the course of the text Sofia develops from a young child who plays dress-up games with her cousins, to a young woman who is willing to move three hundred miles away from school.
Planaria usually live in water, water doesn’t have any effect on them which the reason why it is used as a control group in this experiment. Planarian will be put near the edge in a two-chamber tray containing water, in the side that is not covered with a dark piece of paper. Five planaria will be tested in a 2- chamber tray. We will measure how long it takes the planaria to move from the edge of a chamber receiving light, to the dark chamber. Subsequently, start by adding the lower concentration of caffeine in the water, replacing planarian in the same position and measuring how long it takes now to go back to the dark chamber in the presence of caffeine. We will duplicate the same procedure with higher concentrations of caffeine and additionally take the average of the time all five planaria took to move from the edge of the chamber in brightness, to the dark chamber in different concentrations of
Every student in a lab section planted eight seeds, two in each cell in a quad, to make sure that we had at least one plant for each week for 4 weeks. After planting the seeds we put the plants on a water mat tray to make
This disease may be on the brink of being eradicated entirely but that doesn’t stop it from being one of the grossest things that anyone has ever seen. The parasite enters the body via unsafe drinking water. When people drink water infected with water fleas that have have been hosting the larvae of the parasite. There are no symptoms, to begin with, but about one year later, blisters on the feet or legs begin to develop and then the adult fully developed worm crawls out of the host body over a period of a few weeks. It’s said that the pain is intense and can incapacitate a person for weeks at a time. The pain can also continue for months after the infection. The parasite needs to infect a person at least once a year in order to continue. There were an estimated 3.5 million cases in 1986 but the disease has been greatly reduced over time and only 22 cases were reported in 2015. This disease will probably be the first parasitic disease to be completely eradicated in humans.
As axolotls can grow up to 30 cm or bigger they do need a lot of room, over population of a tank will cause cannibalism and stress to the axolotls. They will need no less than 37 liters and 10 gallons of water per axolotl. Different tanks hold different amounts of water per foot, so when picking a tank make sure it has enough room for your axolotls. Filtration is important to keep clean and keep control over the water levels. As axolotls are sensitive to their water conditions, it is best to have a filter and do weekly 20 percent water changes. A small water filter with a small water flow rate will be perfect for one or two axolotls. Lighting is something unneeded for axolotls as they prefer low lighted areas. Temperature anywhere from 10 degrees Celsius to 23 degrees celsius at a maximum of 24 degrees celsius. Feeding axolotls the right food is very important. Earth worms are the best food for axolotls as they are the most nutritional food source for axolotls and they should be organic and not sourced from the
A relatively low risk and quick surgery; however, after the surgery Stella’s vocal cords began to swell and she was having trouble breathing one day while playing. Her owners realized it and rushed her to the veterinarian. The doctor had to perform an emergency surgery that involved cutting out the swollen tissue which required a large incision along her neck leaving an ugly scar. This surgery was much more expensive than the original devocalization or hiring a dog trainer and could eventually require another removal of swollen tissues (Devocalized: Stella’s
Every time you see one of the CATs clearing the hill at university of the snow, you probably don't see anything amazing about it. However, caterpillar tracks used on it are just ingenious and its invention is comparable to the invention of the wheel.
Mao Dun, author of "Spring Silkworms", was a twentieth century Chinese novelist, critic, organizer, editor, and advocate for Chinese Communism. According to David Wang, Mao Dun was one of the most versatile Chinese literati among the May Fourth generation. Mao Dun was an advocate and practitioner of European naturalism. Motivated by history and politics, Mao Dun has introduced western literary ideas to China in his novels. As a left wing writer Mao Dun focuses on the peasant's point of view and relies on his depiction of reality to evoke change. A good example of this style of writing is the story "Spring Silkworms".
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.