The worm crop-gizzard allows for pharmacological testing of multiple drugs in an in vitro preparation, which exhibits rhythmic contractions after it has been isolated from the worm. Serotonin (5-HT) decreases the amplitude of contractions while acetylcholine (ACh) increases them. We hypothesize that if serotonin directly effects muscle cells, then if acetylcholine and serotonin are added to the preparation at the same time, then the amplitude of the recorded contractions will decrease. The crop-gizzard was submerged in a saline solution and was pinned to a force transducer which recorded the intensity of the contractions. The average amplitude of contraction was compared to a baseline for three different trials in which exogenous (1) ACh, (2)
In the book There's a Hair in my Dirt! A Worm's Story by Gary Larson, a worm father teaches his son about nature by telling him the story of a human named Harriet, who had a deep love for nature. She goes out one day and takes a walk through the forest, taking time to appreciate the beautiful things she sees along the way. Although her actions ultimately harm the forest's animals, her only intention was to appreciate nature and help the forest. Her attitude toward nature is positive, but her actions toward nature are very harmful.
In this experiment, contractions of the earthworm gut are measured in an organ bath with a force transducer. The effect of neurotransmitters and ionic concentrations on contraction strength and rate will be investigated.
The Guglielmites are not a well-known group in the history of heresy, and what little we know about them comes primarily from a single inquisitorial record. Henry Charles Lea, in his seminal study of medieval inquisition, devoted a short chapter to this thirteenth century heretical sect in Milan and concluded by stating that it was a little episode in the history of heresy that held no importance in origin or result. Indeed, the Guglielmites never seemed to exceed more than a few dozen members. Moreover, those members were drawn from noble Milanese families. What sticks out about them, what occupies the minds and fantasies of historians and contemporaries alike, is their belief
Sacks has written a paper over “brainworms”, as he calls them. These are catchy little tunes or rhythms that stay in your mind and taunt you for days. All throughout this piece of writing he wrote about how awful they are. Sacks proves the negativity of these “brainworms” to his readers with the use of pathos. He pulls at the emotions of his readers giving them a repulsed feeling towards these critters.
Just last month, a deadly worm was found in not one, but four locations in the U.S. state of Florida. This worm, until recently, was documented in only twenty-one countries, most of which were island nations. Although the New Guinea Flatworm may seem as a highly dangerous predator, it is only about two inches in length and mainly targets snails for its nutrition. These worms are not harmful to humans, but they will feast on any soft creature in the soil. In order to eat snails or any critters with a hard shell, the New Guinea Flatworm latches itself onto the shell’s opening and then spits out its own stomach through the opening in its belly. This allows an acidic goo to dissolve the snail’s flesh and the worm can continue on with its meal by swallowing both its stomach and the snail.
I love gummy worms I been in a gummy worm factory I fell in love with it just the flavors and sweet texture just grab my attention not in that way. I use to buy gummy bears a lot everyday I had a little bit of a sweet tooth my mom just always buy me some gummies at dollar the store. It's kinda funny how i just always on my birthday my mom would ask me what i want for my birthday I would just say money and gummy worms. My mom would just be cool with it she really didn't even care she wasn't buying expensive things that's why.
species group. The location of this earthworm was in Australia, where they claimed their habitat
Barbers Pole worm (Haemonchus contortus) is most commonly found in southern Queensland and Northern New South Wales it is most common to find the worms here because is humid but no to humid in order to kill off the worms and not too cold to kill the worms. Refer to figure 1 in order to see where about they are most commonly found. The Barbers worm is found in the 4th stomach (abomasum) they live in that area of the stomach because the most common way to detect weather or not there is any worms in the stomach is to conduct a worm egg test commonly known as FEC (faeces egg count).
The new guinea flatworm is from the united states of America.this worm is native to the island of New Guinea where it was originally to have been found in. You can find these worms in tropical areas,coastlands ,planted forests, riparian zones shrubs and urban areas as well.it feeds on earthworms ,slugs and arthopods. This worm can harm the snail called The Giant East African Snail. This worm also can mainly eat mollusks and it especially likes to prey on snail. To hunt for it's prey the worm deposits itself to the bottom of a cabbage leave. It also can follow snail mucus trails to find it`s trail. It also has a infectious rate at least 14.1% and this thing usually lives on cabbage leaves. This worm not only affects the whole population of animals or a specific area this worm can affect humans as
This will be done by anesthetizing the crayfish in ice, and dissecting it until only the cephalothorax remains with the heart visibly beating. This will allow for easy addition of our select neurotransmitters: acetylcholine (ACh) and dopamine (DA). Two separate experiments will be performed. One will test for the presence of cholinergic receptors and the other will test for the presence of dopaminergic receptors. In order to test for cholinergic receptors, a multi-tiered experiment will be done. One crayfish will first be exposed to ACh only and will be followed by another test with atropine. This will give information on which receptor might be present. To test for dopaminergic receptors, simply adding dopamine to the heart will provide an answer to whether these receptors are present.
Background- This lab is being done to demonstrate the effects of stimulants on the circulatory system of blackworms. In this lab, the stimulant we have chosen to use is Nicotine. A stimulant is an agent that causes increased activity, especially in the nervous or cardiovascular systems. In this lab, we will put blackworms into the Nicotine to look at the differences in pulse rates when compared to a control. The proper name for blackworms is Lumbriculus Variegatus, they are freshwater worms most commonly found in North America and Europe. The blood in blackworms circulates from the dorsal blood vessel toward the head through a series of
The topic I am writing about is the recent screwworm parasite outbreak in Florida. This is the first U.S. invasion of this lethal critter in thirty years. In at least two locations near the Florida Keys, samples confirm the screwworm invasion. The screwworm is deadly even though it looks like an ordinary fly. It feeds on living tissue and can “kill a fully grown steer in 10 days” (Guarino & Post, 2016). The only way these creatures can be killed off is with a fire that includes gamma radiation and X-rays. This creature can infect not only animals and humans, but also livestock. With the absence of the screwworms, it has saved the livestock industry over $900 million. These are a few reasons why this topic is worth considering. Many animal and
Introduction The plant used in this experiment was the Alaskan Pea plant (Pisdum stativum) and the earthworms used in this experiment were called red wriggler worms (Eisenia foetida (Yard, Eisenia fetida). In order to attain prime growing conditions for the Alaskan Pea plant (Pisdum stativum), seeds should be planted approximately 1-1.5 inches in the ground and 2 inches apart. The plants should germinate in 7-14 days with a rate of 90% germination success and after a few weeks, the pea plants should reach about 3 feet or less (Karen Carter). During this period they need support to allow the terminal bud to grow and to limit damage to the new growing nodes’ on the apical bud (David M. Hillis 522).
Tapeworms are parasites that can live in your intestines. When a tapeworm lives inside of you, it is called a parasitic infection. An adult tapeworm can grow very long and can live inside of a human for many years.
The mealworm is a the larval form of the mealworm beetle. The four stages of insect life start when the mealworm egg is laid in the soil anywhere from a couple of days to a couple of months. After it hatches it sheds its exoskeleton, causing them to be a light brown color. The mealworms favorite meal are grains, like oatmeal and cornmeal. Once they have eaten enough, usually a week or two later, they develop their hard outer shell.