Neural Control and Coordination

â€Å"NEURAL CONTROL AND CO-ORDINATION† Co-ordination – It is the process through which two or more organs interact and complement the functions of each other. Neuron – It is the functional and structural unit of nervous system. Therefore, the nervous system is also known as NEURAL SYSTEM. Neurons with longer projections are said to be the longest cells in our body. There are about 100 billion neurons and most of them exist in the brain. Some neurons have flask-shaped and are called Purkinje cells. They are found in the cerebellum of brain. Shortly after birth neurons do not develop.A neuron has two main parts viz. a) Cell body or Cyton or Soma – It may be up to 13. 5  µm in diameter and may be irregular, oval, rounded, etc. Neuroplasm and neurolemma are its cytoplasm and cell membrane. A cyton consists of cell organelles like other cells. Besides, it also has neurofibrils, neurotubules and Nissls granules or bodies. Neurofibrils take part in transmissio n of impulse Nissls granules or bodies are irregular masses of rough endoplasmic reticulum on which free ribosomes and polysomes are attached. Nissls granules probably synthesize protein for the cell. ) Cytoplasmic processes or neuritis – They are of two types. 1. Dendrites or dendrons – They contain neurofibrils, neutubules and Nissls granules. They conduct nerve impulse towards the cell body and are called afferent processes (receiving processes). They may be one to several. 2. Axon or Axis – It is a single long process of uniform thickness. The part of cyton from where the axon arises is called Axon hillock and is the most sensitive part of a neuron. An axon does not have Nissls granules, golgi complex, ribosome, etc. So cyton supplies protein to axon.Its cell membrane and cytoplasm are known as axolemma and axoplasm respectively. Axon ends in a group of branches called terminal arborizations (axon terminals or telodendria). They have synaptic knob to form sy napse where axon and dendrite of two successive neurons can meet. Motor end plate – The part of sarcolemma that lies beneath the axon terminals (nerve endings). Axon conducts nerve impulses away from the cell body hence called efferent processes. TYPES OF AXON There are two types such as myelinated (medullary) and non-myelinated (non-medullary) In myelinated neurons, the axon is surrounded by myelin sheaths.Myelin sheaths have regular interruptions called node of Ranvier. The space between two successive node of Ranvier is called internodes. Around the myelin sheaths, there is a delicate sheath made up of nucleated cells called Schwann cells. VARIOUS PARTS OF NEURAL SYSTEM It can be divided as Central Nervous System (CNS) and Peripheral nervous system (PNS). Central Nervous System; The CNS comprises brain and spinal cord. BRAIN: It is the anterior most part of the CNS. It lies inside the cranial cavity of the skull. It weighs from 1220 to 1400gms. It has membranes called meni nges (sing. eninx), they are 1) Piamater – It is thin and innermost membrane Sub arachnoid space lies between piamater and arachnoid membrane. Cerebro Spinal Fluid (CSF) is found in this space . It provides medium for exchange of food materials, wastes, respiratory gases, etc. 2) Arachnoid mater – It is thin and spider webby. It is the middle membrane. Subdural space lies between arachnoid mater and dura mater. 3) Duramater – It is the outermost fibrous membrane. **Fontanales – Membranous areas between the cranial bones of foetal skull. Structure of human brain: It has three parts viz. ) Forebrain or Prosencephalon – It includes olfactory lobe, cerebrum and diencephalon Olfactory lobe – It lies in the temporal lobe. * Function – It receives impulses from the nose. Cerebrum – It is the largest and most complicated part of the brain . Its outer portion is called the outer cortex and it forms the GREY MATTER. Beneath the grey matt er, there are millions of medullated (myelinated) nerve fibres. They form white matter. * Function -It creates ideas, touch, perception, reasoning, decision making. * Diencephalon – Hypothalamus is located here. Hypothalamus maintains homeostasis.It is also called therefore called THERMOREGULATORY CENTRE OR THERMOSTAT. It keeps body temperature at roughly 37 °C. 2) Mid-brain or Mesencephalon – It comprises cerebellum, pons varolii and medulla oblongata. Cerebellum – It is the second largest part of brain and it has purkinje cells. * Function – It controls rapid muscular activities like running, talking and typing. Pons varolii – It is located above the medulla oblongata. Pneumotaxic centre is present here. **Pneumotaxic centre limits inspiration. Medulla oblongata – It continues with spinal cord. * Function – It regulates heart rate, blood pressure, etc.

Nutri Natural, Herbal and Vitamin Supplements Research Paper

Nutri Natural, Herbal and Vitamin Supplements - Research Paper Example In addition, many organizations are watching the growth of this demand and competition is already building. Therefore, market positioning and efficiency in marketing company products has become more relevant. For a company such as Nutri that intends to launch their online retail sale of natural, herbal and food vitamins, it is crucial to understand the market dynamics, distribution and the nature of competition within the market to be successful. Notably, the UK food supplements market is complex, and brand positioning is a necessary effort. In the past ten years, it is evident that the demand for supplements and vitamins has grown considerably and is already at a plateau phase. Approximately, the Food and Supplements market will reach $786 million within the next five years. Therefore, there is an opportunity for investment in this industry. UK enjoys stable economic growth and the low rates of unemployment in the country points out that the public have a well-grounded purchasing power (Ritchie 2-7). If this continues in the near future, it is obvious that the food supplements market will grow in tandem with the public demand. To this end, the economic perspective of the US food supplements market favors Nutri’s intention to launch their food supplements market. The social-cultural factors appear to be the main drivers of the demand for food supplements in the UK market. The high rates of obesity and health-related diseases have triggered a sudden change in the diet behavior in the UK. UK is among some of the countries have high rates of health-related diseases in the world due to high consumption of energy-rich foods. This trend has seen many health organizations as well as the government launch public awareness programs in the world to warn the public against unhealthy feeding habits. Consequently, the public is becoming aware of the need to

Marks and Spencer Essay Example | Topics and Well Written Essays - 2250 words

Marks and Spencer - Essay Example According to the latest assurance statement being published, Marks and Spencer had been able to take care of most climate change issues, all of the 100 commitments that it made under Plan A and has also taken care of 32 of the safety and health standards underlying Plan A by 2009. But there are certain limitations in this regard as well. For instance, the company did not abide by the group performance degrees while claiming the completion of Plan A commitments. A lookout for prior to zeroing down upon a company are two aspects define the degree of responsibility that a company complies to while operating its business and their crucial nature often drives these companies to reach out any measures for accomplishing them. Marks and Spencer indeed had complied with the expectations of its investors and stakeholders as promised in Plan A. the company not only undertook measures to retain environmental sustainability but also indulged in community services which even helped it earn rewards from Business in the Community. However, there still remain subtle rooms for improvement in this aspect even though it had come a long way towards a better governance and sustainability position over the last few years.... They must be sufficient enough to motivate the employees to their jobs but not more than needed. In addition, remuneration is incentive based for executive directors, a chunk of whose incomes will base upon individual and organisation performance. However, the structure of their package should be decided in a transparent and fair manner. For instance, no executive will be indulged in deciding his own financial reimbursement. Audit Committee The Board must publish a comprehensible and evaluative company financial report at regular intervals and make transparent arrangements for implementing these reports. Furthermore, it is also the Committee’s responsibility to look after internal control of the firm to protect the interests of shareholders as well as that of the company. They produce an internal audit report where they mention the pace of work being carried on post submission of the report. This report identifies the risks as well as the weaknesses that the company is feature d with and have to be tackled in order to meet the annual targets. Shareholder Relations The company supports a timely dialogue interaction with its shareholders to arrive at mutually agreed company objectives. It is the Board’s responsibility to watch over the fact that a pleasing conversation takes place with the shareholders. In addition, investors should be allowed to fully participate in the Annual General Meetings of the company to voice out their concerns (Marks and Spencer Group plc, 2010). Institutional Shareholders There must be a mutual understanding between institutional investors and the company under concern. In addition, these shareholders have voting

Comparing Brazilian Culture to American Culture Research Paper

Comparing Brazilian Culture to American Culture - Research Paper Example These segments include ‘Power Distance’, ‘Individualism’, ‘Masculinity’, ‘Uncertainty Avoidance’, ‘Pragmatism’, and ‘Indulgence’ (The Hofstede Center, 2014). The discussion henceforth will give an elaborative account of these cultural segments as observable in the prospective market of the Canadian company, i.e. in Brazil. Power distance exhibits the acceptance of power hierarchy and the inequalities among people residing within a given society. Observably, Brazil scores 69, where Canada scores 39 as per the Hofstede’s model when examining this factor (The Hofstede Center, 2014). This further reveals that where Canada believes in egalitarianism, Brazilian communities believe in power hierarchy and accept the inequality as a part of their culture (Ferguson, 2007). It is thus necessary for the Canadian company to understand the power distance of Brazil and formulate their organizational decision-making structure accordingly. Individualism, another facet of the Hofstede’s cultural model, indicates whether people prefer group oriented lifestyle practices or individualism. Brazil scores 38 in this section according to Hofstede’s model analysis, where Canada scores 80 (The Hofstede Center, 2014). This implies that Brazilian people are group oriented where Canadians are highly individualistic in nature. Certainly, in the business world, group orientation attitude among employees and customers can create the difference of opinions as well as communication gap. Due to the huge difference of nature, it is better for the company to use Polycentrism to connect with the culture of Brazil (Ferguson, 2007). The paradigm of masculinity in the Hofstede’s model replicates whether the cultural backbone of the country is success oriented, achievement-oriented or it is based on the quality of life.  

Trying to fit in Essay Example | Topics and Well Written Essays - 750 words

Trying to fit in - Essay Example The outcome was successful and I completed all tasks as expected by the group members. Before I expressed my willingness to join the group, I first assessed the openness and closeness of the group. It understood that the group was interested in discussing topics that concerned me since I could hear their conservations while seated next to them during my break time. I introduced myself sincerely and openly by greeting all members and telling them my name. I asked them on how long they had been working together and make a positive statement about the group. I also made a positive statement about myself and expressed my willingness to join and fit in the group since I shared the same objectives with all the group members (Crisp and Turner 108). The main objective of joining and fitting in the group was to combine our unique talents, skills and knowledge in accomplishing our classroom work. At the formation stage, each member talked politely and outlined the duties and responsibilities o f each individual. For instance, the group members openly provided suggestions on the time schedules of the meetings and also number of hours for the meetings. The members had adequate time to adapt to the unique personalities of each group member. For instance, the members selected a common mode of communication which was official English language (Crisp and Turner 109). ... In the group work decisions, the group laid down a framework of clarifying the factual ideas and suggestions of the members towards the discussion including reviewing academic literature that is contained in classroom notes. In addition, any arguments during the discussion were based on opinions, ideas and not individual personalities (Crisp and Turner 110). The members had diversity of opinions and view points on the discussion topics and the discussion process was well organised. Showing my confidence and asking questions made the other members easily accept me in the group. I also played an additional role of note taking and organizing the meeting venues which made me an active and crucial member of the group. At the fitting stage, I exercised my listening skills and leadership skills which were critical for the attainment of the group objectives. In deed, some members suggested that I should take up the group leader role due to my self-confidence, decision making skills, assertiv eness and politeness while dealing with conflicts or countering opposing arguments and ideas. Sitting next to the group and making positive comments made me easily join and fit in to the group. I attained my outcomes of fitting in to the group since the group provided me an opportunity to share my ideas and opinions and also counter the arguments of the rest of the members. I understood that individuals have different cultural backgrounds, personalities and values thus it is essential that group members focus on ideas and not differing personalities. It is important that group members familiarize themselves with discussion materials and clearly understand the rules and

Working Capital Management Essay Example | Topics and Well Written Essays - 1000 words

Working Capital Management - Essay Example Gross Working Capital: It refers to the firm's investment in current assets. Current assets in year 2006- 2000000 and in 2007- 2470000. It increased significantly instead of dip in cash because of nearly 71% increment in debtors and 58% increment in inventory of finished goods, but cash reserve dipped by 96% and tightens the liquidity position of company by the end of 2007. Net Working Capital: It refers to the difference between current assets and current liabilities. In year 2006, NWC-1300000 and in year 2007, 1490000. Net working capital has been increased YoY but it's difficult to assume that how much Working capital is required by the company in the existing business as no industry standard or benchmark standard is not provided. Even the trading cycles are not mentioned regarding finished goods, creditors and debtors, therefore assuming the different cycles is difficult and so does the prediction of working capital. If we checkout the current asset to fixed assets ratio as it helps in determining the optimum level of current assets so that the wealth of shareholders is maximized. As the firm's output and sales increase, the need for current assets increases. Generally, current assets do not increase in direct proportion to output; current assets may increase at a declining rate with output. This relationship is based upon the notion that it takes a greater proportional investment in current assets when only few units of output are produced than it does later on when firm can use its current assets more efficiently. For year 2006, CA/FA ratio is 0.55 For year 2007, CA/FA ratio is 0.58 Company has nearly same ratio in both the years that means company increases its assets as per the requirement. That can be analyzed by taking ratio of working capital requirement as a percentage of turnovers, which is nearly 27% in 2006 and nearly 23% in 2007. Therefore it can be said requirement of current assets has been increased proportionately. It's difficult to assume how much is required to run the business as any standards are not given and it's difficult to presume for an industry. But it can be said that Adorama net working capital has been increased even though company might face problem in quick solvency (which includes mainly within a week convertible current assets) but if we see overall situation of working capital needs company is in sound position even it has overdraft problem but sound position of debtors and inventory can sort it out, certainly company might face liquidity problem as company has very less to meet immediate demands but money can be raised by mortgaging debtors to meet immediate requirements. Overtrading is mainly matching sales and production cycles, it takes place when a business accepts work and tries to complete it, but finds that fulfillment require greater current assets or working capital. Overtrading is a common problem in businesses and it often happens because of some mismanagement or any unprecedented cause. If you see Adorama has net working capital of 1490000 in 2007, which is enough to meet the requirements but in its cash kitty it has only 20000. Therefore, passing a judgment is difficult and highly depends upon the nature of business, position of different cycles( debtors and inventory mainly) but still I would like to say that there is certainly problem of cash crunch or current

Two Learning Theories Assignment Example | Topics and Well Written Essays - 1500 words

Two Learning Theories - Assignment Example Two of these theories are the behaviorist theory and the humanist theory. Behaviorist theory view learning as the product of the stimulus conditions (S) and the responses (R) after the exposure to the stimulus. Due to the relationship between the stimulus and the responses, it is most often referred to as the S-R Model of Learning (Bastable, 2008, p. 54). Proponents of the behaviorist theory believe that behavior can be learned or unlearned by modifying the stimulus in the environment or the responses to the stimulus. This type of learning acquires learning through practical application, requiring less thinking and emotional affectations. Behaviorist theory created a significant impact on education and behavior change through classical conditioning and operant conditioning. Classical conditioning was identified by Ivan Pavlov and sometimes referred to as the Pavlovian conditioning or respondent conditioning (Butts& Rich, 2011, p. 207). In classical conditoining, there is an introduct ion of a neutral stimulus to the unconditioned stimulus and unconditioned response. The neutral stimulus has no connection with the unconditioned stimulus and response. ... 210). On the other hand, humanistic learning theory focuses on the person and emphasized the importance of feelings over thoughts(Butts& Rich, 2011, p. 229). Learning takes place when people are given the chance to express their feelings, making them an active participant in the learning process. The concept of hierarchy of needs by Abraham Maslow has strengthened the humanistic theory as well as the construct of self-concept by Rogers which identified individual need for unconditional positive self-regard (Butts& Rich, 2011, p. 230). Humanistic theory’smain advantage over other learning theories is its holistic approach and openness in education and health care field. Learning Theories and Nursing Practice Learning theories is crucial to nursing practice. Evidences of interconnection are found between patients and families who wanted to acquire information on how to adjust to a particular medical condition, in students getting hold of information and skills needed to become a nurse, or in health care professionals designing effective teaching plan for patients. All of these demonstrate relationship of learning theories with the nursing practice. Learning theories serve as frameworks for health care professionals on planning learning outcomes.The construction of different learning theories enables the health professionals to understand how the introduction of knowledge can affect an individual’s feeling, thoughts, and behavior. Learning theories were also linked to the health counseling, work organization, and hospital’s management, marketing, and advertising (Bastable, 2008, p. 73). Nurses are often the professionals involved in health education of patients. That is why they always