Morphological Structure of Annelids Sample

Morphological Structure of Annelids Paper The nervous system includes a pair of cephalic ganglia attached to double nerve cords that run the length to the animal along the ventral body wall, with ganglia and branches in each segment. Annelids have some combination of tactile organs, competitors, balance receptors, and photoreceptors: some forms have fairly well developed eyes, including lenses. The annelids number more than 13,000 species distributed among three classes: the marine worm (Polyphosphate), which are divided into free moving and sedentary or tube-dwelling forms; the earthworms (Oligocene); and the leeches, (Hernia). Polyphosphate can be found in the intestinal zone up to -?5000 meters of the ocean depth. Oligocene and Hardliner can be found in land. Objectives I. TO introduce student With the morphological Structure Of Annelids 2. TO introduce a technique to isolate Annelids worm from sediments 3. To draw the important structures of this group for identification using compound microscope. Apparatus ; Stereo microscope ; Compound microscope ; Petri dish ; Forceps ; Annelids samples Methods 1. Extracted samples which contain Polyphosphate, Oligocene, and Hardliner were taken. The samples were washed with water and transferred into a Petri dish, 2, The samples were differentiated into Polyphosphate, Oligocene, and Hardliner group. 3. The samples oeuvre viewed under the compound microscope and the structure of Polyphosphate, Oligocene, and Hardliner ever drawn. 4. For Polyphosphate, the Structures that has been stressed on for identification was paranoia, promethium, peritoneum, peristalsis cirri, antenna, pal, eyes, and types Of setae. S. For Oligocene, the Structures that has been stressed on for identification was promethium, mouth, setae, spermatophyte, xenophobe, sperm Nell, cellulite and tubercle. . The above Structures were drawn and the functions of each structure were explained in discussion. Discussion Every each to organisms has their own structures and every structure have its own function, As annelids are small organisms, all the structure need to observe under the compound microscope. Some tooth structure could not be observed as it is interna l structure of the annelids, The observation of the annelids was done for the external structure only. Table 1. 1 below shows the results and the structure that can be observed in annelid samples provided. We will write a custom essay sample on Morphological Structure of Annelids specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Morphological Structure of Annelids specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Morphological Structure of Annelids specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Structures Polychaetaoligochaeta Hardening Paranoia / Promethium / Turbulence Peritoneum / Peristalsis cirri Antenna Pal/ Eyes/ Mouth /// Spermatophyte Snooper . / / Sperm funnel Cellulite. Table 1. 1 Polyphosphates have paranoia, fleshy, beadlike lobes on each segment. Paranoia are attention in locomotion and gas exchange. Setae are located on the paranoia. Setae in annelids are bristle or hair like structures found in living organisms. They help in balancing of some living organisms like earthworms not to backslide, It often functions like a kind of overlie when the animal is feeding. The shape and composition of promethium are important for annelid systematic. The anterior end has a mouth opening. Covered by a lobe termed promethium. The posterior segment bears the anus. The first section behind the promethium, called the peritoneum (Greek meaning around and rope meaning mouth), is regarded by some zoologists as not a true segment, but in some polyphosphates the peritoneum has cheetah and appendages like those of other segments. Peristalsis cirri are paired, elongated cirri on the peritoneum. Several fused segments compose that region, which is confirmed by the presence f several fused ganglia along the ventral nerve cord. Anterior locomotors appendages: the pair Of head appendages located ventilators on the peritoneum. These aids in locomotion, fixation on the host, and feeding. They are retractile, and are also known as anterior limbs. Factual Rouse (1997) has cited in Titian Machine Steiner; A. Cecilia Z. Amoral: The family Histrionically (Annelid, Polyphosphate) including descriptions of two new species from Brazil and a new genus- termed them peristalsis cirri because they are located on the peritoneum. Other families of Annunciated order have the peristalsis cirri coated dorsally and posterior on the peritoneum. A pair of pals which are differentiated into two units, the distal unit of which is substantial even though it is smaller than the proximal unit. Pals and antennae are located on the head to many polyphosphates. In some groups they are both sensory while in others the pals are used for feeding. A spermatophyte function in annelids is to receive and store sperm from the male or, in the case of hermaphrodites, the male component of the body, and can sometimes be the site of fertilization when the octets are sufficiently develop. The conducts (oviduct/vagina and sperm duct) usually open via a common opening, with the ducts leading into a hemispherical chamber called the genital atrium which opens to the outside via the snooper. The snooper is at one side of the proctologist, either central or toward one end. A sphincter muscle can open or close the snooper. The snooper Of each proctologist may all occur on the same side of the worm, as in our piece of worm drawn above, or they may be on both sides in an irregular and random fashion. (Though each proctologist only has one snooper on either did). In some species, there is a double system with each proctologist having NON snoopers, one on each side. The sperm funnel, Which consists Of a ciliated epithelium bounded by a flattened peritoneum, is characterized by a halo of vertically orientated spermatozoa. The spermatozoa nuclei terminate within the culinary zone of the funnel but junction attachments been sperm and cilia have not been observed. A tubercle is knob. Like protuberance, often referring to a large (macromolecule) or small (micrometeorite) projection on the Elton of some annelids. The cellulite is part of the reproductive system of classmates, a subgroup of annelids which contains lighthouses (earthworms) and hardiness (leeches). The cellulite is a thick, saddle-like, ring found in the epidermis (skin) of the worm, usually with a light-colored pigment. To form a cocoon for its eggs, the cellulite secretes a viscous fluid. This organ is used in sexual reproduction of some annelids. The cellulite becomes apparent in mature annelids, but may be hard to locate visually in younger annelids. In leeches, it appears seasonally. Its lour is usually slightly lighter than that of the body of the annelid, Occasionally, living segments of the worm will be shed with the cellulite. Cellulite produces a slime tube that slides forward toward the anterior segments As it passes along, it receives deposits of eggs and sperm from another individual that has been stored in the seminal receptacles, Fertilization occurs within the mucous cocoon, which is then deposited in the soil. References I. Hemming, T. P. (1 981), The littà ©rateurs Of the sperm funnel and nor-I-glandular Vass deferent of Tubbier tubbier (Annelid: Oligocene).

Philosophical Essay Topics

Philosophical Essay TopicsThe first step in preparing for a philosophy argumentative essay is to determine what argumentative essay topics you are going to use and how you will tackle them. There are many choices available, so there is no shortage of topics to choose from. Here are some of the most popular ones:Objectivism is a philosophical system that argues that everything is a product of human thought, and therefore everything can be proven through logic and the laws of logic. The basic premises of this philosophy are that reason can prove anything, and therefore any human being is an expert in his own mind. Man is able to apply the laws of logic and knowledge to all aspects of life. Philosophy may be applied to nearly every area of life, including science, sociology, and ethics. The objectivist philosophy is not confined to only one area of philosophy, but goes on to offer a universal philosophy that can be applied to all areas of life.A concept known as naturalism in philosophy is the notion that all humans have the same innate nature and therefore knowledge and learning come from the mind and understanding of a person. Naturalism, therefore, also posits that all knowledge is true and valid. A naturalist, therefore, believes that knowledge and truth are beyond all the discoveries and theories of mankind. Naturalism may be used to explain how human knowledge is different from other forms of knowledge. Many traditional philosophers accept the naturalist position, including Kant and Hume.Empiricism is the view that all knowledge can be accepted on the basis of human intuition. One of the most famous philosophers who held this view was Jean-Jacques Rousseau. Empiricism is not limited to one kind of subject matter, but may be used to accept any kind of information. It also entails the acceptance of knowledge on the basis of human intuition, even knowledge that is self-refuting. It also tends to state that all truth can be found through the human mind, and ther efore knowledge should be accepted based on the human mind's ability to determine truth.Skepticism is one of the most common philosophy argumentative essay topics. Skeptics do not believe in all-knowing God or the ability of man to come up with knowledge. Skeptics will not accept knowledge because they believe it comes from our own senses, and therefore humans cannot use the same means of proving and learning about the world.Platonism is the view that there is no absolute truth and that philosophic theories are subject to change. Another philosophical term that often applies to philosophers is Aristotelianism. The English word 'aristocracy' is sometimes used to refer to philosophers who do not subscribe to philosophical theories such as Plato, Aristotle, Descartes, and Spinoza.Dualism is another of the most popular philosophy argumentative essay topics. This philosophical view asserts that there are two basic principles in nature, and those principles are existence and nothingness. The existence principle states that there is no limit to the universe; the nothingness principle states that there is no material realm or space; and these two principles, as well as other elements of dualism, are part of the philosophy of Thomas Hobbes.Philosophy is a very broad topic, so there are many more philosophical essays out there to choose from. If you are interested in writing an essay about the philosophy, the Internet provides many free resources. What kind of philosophical essay topics are you going to write?

Plug and Play essays

Plug and Play essays Technological advances have swept our society into the twenty- first century. Many accessories have become easily compatible to take personal PCs to new heights. Windows 95 was the first operating system to offer the feature of plug and play. Adding new hardware to your computer is easier than ever because it is set up to communicate by means of an I/O address, interrupt request, and a direct memory access channel. By powering on your system, your computer recognizes immediately new devices looking to be installed or used. In the past, in order to have the same method that computers carry now, you would have to purchase a compatible piece of hardware, set the hardware jumpers, physically install the card, install configuration software, reboot your computer hoping everything is in working order. Now in present times, available to you is full compatibility and support for legacy hardware, support for mobile computing including hot-docking and hot-plugging of plug and play devices, automated configuration and installation of plug and play peripherals, centralized hardware configuration information in the windows 95 registry, and lastly reduced user support. One of the most frustrating areas of operating a computer is installing hardware and or configuration of devices. Accessories such as joysticks, CD recorders, scanners, digital cameras, printers, speaker systems, and other components are the most common features people adapt to their systems. However, enabling these devices would take a significant amount of time and intelligence in order to have them operating to their full capabilities. Proper commands and certain sequences of changing system properties is required, yet with plug and play none of these problems are encountered. Whether your desires are to joystick your way through a three dimensional helicopter game, or use a digital camera to record real live action, plug and play is what m ...

E-Business Case Study Example | Topics and Well Written Essays - 4000 words

E-Business - Case Study Example Hoffman & Novak (1996:51) described the internet as a "phenomenal marketing opportunity". This same definition was later echoed by Palmer & Griffith (1998:45) when they state that, the internet has created a new revolution in marketing by providing much more than just a new medium through which organization communicate to the public. E-marketing has become an important phenomenal for Business to Business, Consumers to Consumers as well as Business to consumers marketing. As the fight of market shares and quest for product success continue, e-strategy has offered marketers and businesses all the necessary tactics, and methods to give their product a break through, or remain competitive (Frost et al. 2001). This assignment examines and evaluates the supply chain management functions of an ebusiness. Using Wal-Mart as a case study, the paper examines the electronic business platform of the organisation with attention on the supply chain. Supply chain management (SCM) is a tactical and management tool employed by present day business to efficiently integrate suppliers, manufacturers, warehouses, and customers so that a company's merchandise is produced, distributed at the right quantities, locations, and the right time (Cheng, Lai & Gunasekaran 2006). This is to minimize system wide costs while satisfying service-level requirements (Cheng, Lai & Gunasekaran 2006). ... Using Wal-Mart as a case study, the paper examines the electronic business platform of the organisation with attention on the supply chain. 1.1Overview of Supply Chain Management Supply chain management (SCM) is a tactical and management tool employed by present day business to efficiently integrate suppliers, manufacturers, warehouses, and customers so that a company's merchandise is produced, distributed at the right quantities, locations, and the right time (Cheng, Lai & Gunasekaran 2006). This is to minimize system wide costs while satisfying service-level requirements (Cheng, Lai & Gunasekaran 2006). Today, SCM gained momentum and received due attention from practitioners and researchers. It has become present day managerial competitive weapon for improving performance (Ramsay 2000). To minimize wastages and meet up with customers demand. Customers and suppliers are important stakeholders. "Stakeholders are those individual or groups who depend on the organisation to fulfill their own goals and on whom, in turn, the organisation depends" (Johnson et al 2005:179). An organisation SCM set the pace and the platform for this to take place. Wal-mart is the largest grocery retailer in the United States with estimated 20% of the retail grocery and consumable business as well as the largest toy seller in the States having 22% share of the market, and the highest private employer with about 1.9million workers and employees. The company had a net income of US$11.3Billion in 2007. Thus, this study was initiated to investigate the application of supply chain management strategy in Wal-mart in its electronic business platform. Using Porters competitive advantage, Porters value chain framework, and the SWOT analysis, the company was

Study to look at nurses' knowledge of elder abuse in long term care Essay

Study to look at nurses' knowledge of elder abuse in long term care setting - Essay Example Studies have shown that people of all socio-economic, ethnic and religious backgrounds are vulnerable to abuse including countries where the traditional system of family care exists. Furthermore, it is increasingly being seen as an important problem and one that is likely to grow as many countries experience rapidly growing ageing populations. It is predicted that by the year 2025 the global population of those aged 60 years and older will more than double, from 542 million in 1995 to about 1.2 billion (1). Although there is an increasing awareness that some older people are victims of abuse, neglect and mistreatment there is strong evidence to indicate that much abuse goes unrecognized and is hidden from public awareness (3). prompted scientific and governmental activity throughout the world. Although the vast majority of older people enjoy the benefits of family life, there has been a growing awareness, during the past twenty years in particular, that older people are sometimes abused, neglected or mistreated. Progress on building a response to elder abuse has been difficult, however, as the issue is shrouded in secrecy, denial and guilt. It is acknowledged that abuse can occur within the home or care facility (4). Any form of abuse is unacceptable. Nurses have a duty of care to the older people in their care to prevent this from happening. Although nurses who care for older persons can expect to encounter cases of abuse our knowledge of the incidence and cause of such abuse remains limited (5). While the study of elder abuse has much to learn from responses to other forms of adult abuse, it is vital that the abuse of older people is dealt with separately, to ensure clarity when defining and measuring the problem and to help focus responses to abuse. Elder abuse is defined as a single or repeated act or lack of appropriate action occurring within any relationship where

Euro Behaviour Essay Example | Topics and Well Written Essays - 2000 words

Euro Behaviour - Essay Example From the report it is clear that  economic performance of a trade block depend more on individual countries performance. In our analysis, we intend to evaluate euro’s performance and as such will rely more on the overall activity within member countries. Euro is not political affiliated and thus depend in multi-nation policies regarding the member countries economic performance. When crisis in economic activity within one trade block occur, the effects easily spill to the global economic and asset market. The European Union, as a trade block, has frequently suffered such.According to the report findings  the links in international financial and asset markets are key determinants of a currency’s exchange rate. Single currency or states supremacy cannot influence the rates that her currencies are accorded. Macroeconomics teaches that multiple factors are put into play in regard to determining a currency’s worth in the international market. Individual states cur rency is rated on a scale that is unanimously accepted within the trading scope against a common denomination; majorly the U.S dollar, yen or the euro. However, the rates are never constant varying on the prevailing economic performances as determined by the World Bank. ‘Purchasing power parity’ (PPP) compares rates of trade and prices within a state. Projections of future interest rates of a currency relative to nominal interests are determined by the interest rate parity. (Cumby and Obstfeld, 1982, 1-2). Therefore, at the macro and micro level performance of an economy, the policies made always have an impact to the valuation of her currency. However, the determination of these indices within an economic block like the EU is not dependent on a single country but rather on sum of the overall economic performance of the economic block. The Euro use has expanded very much within the EU region and is now estimated to be in used throughout

Learning Disabilities Essay -- A Level Essays

Learning Disabilities Eleven-year-old Anna is outgoing and bright. She attempts to work hard, but her progress in school has always been slow. She is a year behind her peers, particularly in her English class and her teachers have slowly begun to reduce their expectations of her. Her parents are worried because her confidence for learning is decreasing, and there is less motivation for her to do homework and class assignments. A psychologist found that her intelligence is in the gifted range, but she has difficulty in making out written symbols. It is easy to make the assumption that Anna seems merely as a child who is slow intellectually, but when taking a closer look, it shows that she is just as intelligent but happens to suffer from a learning disorder. Students with learning disorders have brain impairments that make it difficult for them to acquire skills and knowledge accurately and fast enough to keep pace with average academic progress (Encarta, 2003, p.1). The purpose of this research paper is t o investigate the causes of learning disorders, various types of disabilities, their causes, and finally how in today’s modern era assistive technology is able to reduce the frustration of students and increase their level of performance. Defining Learning Disorders/Disabilities The IDEA (The Health & Fitness Association) 1997 Definition of Learning Disabilities is: â€Å"A disorder in one or more of the basic psychological processes involved in understanding or using language, spoken or written, that may manifest itself in imperfect ability to listen, think, speak, read, write spell, or to do mathematical calculations. The term includes such conditions as perceptual handicaps, brain injury, minimal brain dysfunction, d... ...p://www.ldanatl.org/aboutld/teachers/social_emotional/socialacceptance.asp Addresses the fact that health professionals, special educators, and parents must make real efforts to promote the social acceptance of children suffering with learning disabilities. Crossen, C. (1997). Studies suggest phonics help children learning to read. Wall Street Journal. Retrieved April 16, 2005 from http://barrier-free.arch.gatech.edu/Articles/wsj_learning.html Talks about how the earlier reading disabilities are detected the better. With proper encouragement and tools students will have more motivation for reading throughout their lives. Sack, J.L. (1999). Schools advised to catch, treat disabilities as early as possible. Education Week, 18, 7. Received April 16, 2005 from EBSO-host. Emphasizes importance of treating a learning disability as early as possible.