Jellyfish Venom
Almost anyone who has ever spent time near or in an ocean has been warned about being stung by jellyfish. Jellyfish have been ascribed a reputation as dangerous, often lethal animals. The exact actions of jellyfish toxins are not well understood, and the true danger presented by jellyfish is often exaggerated.
This paper will attempt to answer several questions about jellyfish and venom. It will discuss what toxins make up jellyfish venom and the method in which these toxins are delivered. The effects of jellyfish venom on the human body will be discussed, including the possible action of these toxins at a cellular level. Finally, first aid and treatments for jellyfish envenomations will be described.
Background
The marine creatures commonly known as jellyfish are members of the phylum Cnidaria. Of the four classes of cnidarians, jellyfish come from both the Hydrozoa and Scyphozoa classes. Most jellyfish are schphozoids, while the Portuguese Man-of-War (Physalia physalis) is a hydroid. As cnidarians, jellyfish possess two tissue types: endoderm and ectoderm, in addition to a single cell layer of jelly-like mesoglea between the endoderm and the ectoderm (Russell 21). Jellyfish exhibit radial symmetry and have tentacles with stinging cells known as cnidocytes. They range in size from a few millimeters up to a bell size of two meters across, with tentacles up to thirty-six meters long. Typically less than five percent of a jellyfish’s body is "solid organic material" (Halstead, Poisonous 96-97).
Jellyfish have reproductive cycles that involve a sessile polyp and a free-living medusa state. The polyp is asexual, while the medusa is sexual (Williamson et al. 121). P. physalis actually consist of colonies of many small organisms. A single Man-of-War contains both polyp and medusal stage organisms, with several different types of polyps and medusae in a colony (Halstead, Poisonous 94-95)
Jellyfish populations exhibit seasonality in their choice of habitats. Most jellyfish prefer temperate and warm water. P. physalis prefer open waters and move with the wind, tide, and currents. Scyphozoas are found in all seas of the world. These jellyfish prefer shallow water such as bays and estuaries but also inhabit open ocean (Halstead, Poisonous 94-97). They usually live in the warm or temperate waters favored by coral (Halstead, Poisonous 115). Jellyfish are most abundant in coastal areas during warm summer months, but are present along the shore at other times of year (Halstead, Poisonous 97). Likewise, in Australia, the largest numbers of jellyfish are found along shores during the summer months of November through April, with peak numbers occurring in December.
In the old Shakespeare play Macbeth, women wear the pants, while the men wear the dresses, this is the theme throughout the play. It focuses on the marriage of Macbeth and Lady Macbeth takes the lead role, while she convinces her husband to kill Duncan. Shakespeare play concerning gender roles, shows the untraditional marriage in Scotland; what one sees is not what one gets. It also show how one starts is not how they end. The story of Macbeth shows power and betrayal. It shows power because it shows how one can take charge and get it done. It shows betrayal because he kill Duncan just to get the crown.
In Zora Neale Hurston’s novel, Their Eyes Were Watching God, the main character Janie struggles to find herself and her identity. Throughout the course of the novel she has many different people tell her who she should be and how she should behave, but none of these ideas quite fit Janie. The main people telling Janie who she should be is her grandmother and Janie’s 3 husbands. The people in Janie's life influence her search for identity by teaching her about marriage, hard work, class, society, love and happiness.
The late first lady Eleanor Roosevelt once said, "Hate and force cannot be in just a part of the world without having an effect on the rest of it." Mrs. Roosevelt means that although one person may feel alone through the hardships one faces, one has millions beside oneself who can relate to and understand what one may feel. Zora Neale Hurston shows that even though Janie's family and spouses continue to be abusive and harsh toward Janie, their hate and control left her stronger than before, preparing her for the next challenges thrown at her. In Their Eyes Were Watching God, the deaths' of close relatives and family positively affect Janie because she tends to become more educated and wiser with each death she overcomes in the obstacles she calls her life.
Zora Neale Hurston focuses on the evolution of an African-American woman as she goes through adulthood and three marriages in Their Eyes Were Watching God. Hurston expresses the framed narrative through Janie Crawford’s point of view as she recounts her story to her friend Phoeby, and uses two dialects throughout the novel. The clear dichotomy of the narrator’s diction and the characters’ African-American dialect gives importance toward Janie’s struggles and progress to find her strength and independence. Hurston magnifies the theme of voice and language, not only with the characters’ personalities, but also with the form of the novel as she employs a third person omniscient point of view, provoking imagery and shifts in tone.
Scorpaenidae are mostly marine fish,very few found in fresh and brackish water. The family have around around 45 different genera and 380 different species. They are mostly found in the India Ocean and the Pacific Ocean. Most of them lives in coral, tropical reefs and shallow waters, warmer areas. Not all of the family fish lives in the shallow water, small portion of the Scorpaenidae live deep as around 7,000 feet. Just like most of the coral reef fish are, Scorpaenidae have camouflaged body. Their characteristic reflects their name, they have sharp spine that can sting other organisms. Their spine are covered with venomous mucus just like how some other kind of fish are covered with the venomous mucus. Their body are covered with scales. Generally speaking, the Scorpaenidae family fish have different number of spines over the course of the body. Most known type pf Scorpaenidae are lionfish and scorpionfish. Lionfish have preorbital bone with 3 spines, spines and third below the diagonal; , big mouth, end position, oblique fissure. Mandible, vomer and jaw bone with villiform teeth group. Gill openings are wide, tetrabranchiate membranes without the isthmus, pre-opercular margin with 5 spines. Body are ctenoid scales, round head. On the side, there are about eight to nine dorsal fin, fin spines and rays of an anal fin; five to six pectoral fins, they are large, round, and are branched from the upper fin rays. There are about one to five pelvic, sub thoracic; caudal fin rounded truncate. Reef stonefish are extremely camouflaged, they could look exactly like a rock when hiding for predation. The spines of Scorpaenidae are hard and rough, some of their fin spines have poison, can cause serious pain, swells and fatal wounds. Some of ...
herself. Janie, all her life, had been pushed around and told what to do and how to live her life. She searched and searched high and low to find a peace that makes her whole and makes her feel like a complete person. To make her feel like she is in fact an individual and that she’s not like everyone else around her. During the time of ‘Their Eyes’, the correct way to treat women was to show them who was in charge and who was inferior. Men were looked to as the superior being, the one who women were supposed to look up to and serve. Especially in the fact that Janie was an African American women during these oppressed times. Throughout this book, it looks as though Janie makes many mistakes in trying to find who she really is, and achieving the respect that she deserves.
In Zora Hurston’s, Their Eyes Were Watching God Janie Crawford was an attractive, confident, middle-aged black woman. Janie defied gender stereotypes and realized others cruelty toward her throughout the novel. Behind her defiance was curiosity and confidence that drove her to experience the world and become conscious of her relation to it. Janie’s idealized definition of love stemmed from her experience under a pear tree, an experience that was highly romanticized and glamorized in her sixteen year old eyes. Janie’s ability to free herself from the confining, understood, stereotypical roles enforced upon her allowed her to not only find true love but define true love as well.
N fowleri has three stages of their cycle. In the amoeboid trophozoite stage, they are infectious and measure 10-35 µm long. The trophozoite transforms to a non-feeding flagellate when food sources are limited. Flagellates are motile and measure 10-20 µm in length. The amoeba or flagellate will form a cyst, the dormant stage, if the environment is too cold and not conducive to continued feeding and growth. When the organism is in the cyst stage, it has a single layered wall and only one nucleus. The cyst measures 7-1...
No one knows for sure what causes schizophrenia. The biological explanations are linked to genetic predisposition.
The coral polyps are tiny tubular shaped animals that are sometime referred to as hexacorals. The coral look like small sea anemone. Hundreds of them together make up the reef colony. The polyps reproduce by budding or splitting ...
Ever since ancient times , poisons have been used for many purposes across the extent of human existence. Throughout its history , poisons/venoms were first used by ancient tribes & civilizations as a hunting tool to ensure a quick death of their prey. As the years progress , venoms were commonly used in fictional films , initially starting out in the United States. Venoms are poisonous substances that come from venomous creatures such as snakes & spiders. Most of the times, when venoms/poisons are used in movies , it is categorized as Sci - Fi. The reason being is because usually the toxins being used are fictional and whom the toxin used by , the toxin turns them (character) into a supernatural character with supernatural abilities. If this is not the case , then the toxin does what it’s suppose to do , which is to poison the victim and kills he/she.
Lady Macbeth is one of the most compelling characters who challenges the concept of gender roles. Her relationship with Macbeth is atypical, particularly due to the standards of its time. Lady Macbeth becomes the psychologically controlling force over her husband, essentially assuming a masculine role, in order to inspire the aggression needed to fulfil his ambitions. Through her powerful taunts and persuasion, Lady Macbeth convinces her husband to murder the king and to take his throne. She emasculates over her husband repeatedly, knowing that in his desperation to prove his manhood, he will perform the acts she wishes. In Act 1, Scene 5
I would like to begin with the fact that women have always been known to dedicate their time to beauty. Those who are devoted to their appearance most often believe that beauty brings power, popularity, and success. Women believe this, because they grow up reading magazines that picture beautiful women in successful environments; not to mention they are popular models and world famous individuals. Beautiful women are no longer just a priority for most advertising, but we have become a walking target for the working class employers. It is documented that better-looking attorneys earn more than others after five years of practice, which was an effect that grew with experience (Biddle, 172). We cannot overlook the fact that it is always the most popular and most beautiful girl who becomes homecoming-queen or prom-queen. While these are possible positive effects of the "beauty myth," the negative results of female devotion to beauty undercut this value. These effects are that it costs a lot of money, it costs a lot of time, and in the long run, it costs a lot of pain.
...ibillion dollar industry of beauty. She argues that “Scientific studies have proven that human beings are hard-wired to respond more positively to beautiful people”. She also cites a recent report published by the University of Bristol which states Neanderthals wore “makeup” as long as 50,000 years ago, all in hopes of attracting a mate with the chance for successful breeding (Zilhao 2009).
The blue-ringed octopus uses an interesting technique to ward off its predators. Utilizing aposematic coloring (a warning mechanism), this creature can let other animals know to stay away. The tiny cephalopod bears about sixty bright blue rings, appearing as a pattern on its dermal covering. When these rings flash, one can tell that the octopus has been threatened. Although this tropical marine creature may generally be calm, when it is agitated, it can bite with its beak and inject tetrodotoxin into the blood stream. This venom can quickly kill an adult human. Typically, the blue-ringed octopus, or Hapalochlaena Lunulata, resides among rocks and shells on the ocean floor and exhibits a camouflaged appearance (Mathger et al., 2012). However, its skin contains many more interesting structures that allow it to have such a distinct presentation.