Anatomy and Physiology Ch. 1 Study Guide Essay Example for Free

Anatomy and Physiology Ch. 1 Study Guide Essay Anatomy the study of the form or structure and arrangement of body parts and their relationships Physiology the study of the functions of the body parts or structures and their relationships in maintaining life processes. Levels of Structural Organization The human body consists of levels of structural organization that are associated with one another. There are six levels of structural organization: I. chemical level It is the simplest level and it includes all of the chemical substances essential for maintaining life. These substances are made up of atoms. An atom is the smallest unit of matter. Matter is anything that takes up space and has mass.  Atoms combine to form molecules, which may be simple or  complex. Different types of molecules combine to form or~anelles (little organs). Organelles are specific structures that carry out specific functions. 2. cellular level The cell is the basic unit of structure  and function and of life. Cells vary in size, shape, and function and may contain many types of organelles. 3. tissue level Tissues are groups of similar cells that perform a specific function. There are four major types of tissues in the human body: a. epithelial tissue It is found lining body cavities and covers the surface of the body. It functions in  protection, secretion, and excretion. b. connective tissue It is found on the surfaces of  and in organs and tissues and functions in protection, support, and attaching organs and tissues to each other and to the walls of body cavities. c. muscle tissue It functions in the movement of body parts and organs, and in the movement of substances throughout the body. There are three major types of muscle tissue: (1) skeletal muscle It is found attached to and covering bones and it functions in body movement. (2) cardiac muscle It is located in the heart wall and functions in the contraction and relaxation of the heart as it beats. (3) smooth muscle It is located in the walls of internal or visceral organs and it functions in moving substances throughout the body. d. nervous tissue  It is located in the brain and  spinal cord, and extends to various tissues and organs.  It  functions in transmitting electrical or nerve impulses from the external and internal environments to the brain and spinal cord where it is interpreted and a response occurs. 4. organ level Organs are groups of two or more types of  tissue working together to perform a specific function. 5. organ system level ~ sTstems are groups of organs that work closely together to perform a common function. There are eleven organ systems in the human body: ao g. h. i. j. k. integumentary system muscular system skeletal system nervous system endocrine system cardiovascular system lymphatic system respiratory system digestive system urinary system reproductive system 6. organismal level It is the highest level of structural organization and it consists of groups of organ systems working together to maintain body structure and function. Organ systems work together to maintain an internal environment that is fairly constant, stable, or balanced. This is referred to as homeostasis (to stay the same). Changes do occur, but within very narrow ranges or limits. Homeostasis Body parts or structures function efficiently in maintaining metabolic processes and when the survival needs are within certain limits or optimum levels. The survival needs include: water,  oxyqen, nutrients, an appropriate bod~ temperature, and atmospheric pressure. Water is necessary for chemical reactions, excretion, and secretion.  Oxyqen is required for many of the metabolic  reactions that break down nutrients and provide energy. Nutrients provide energy for cells and cell processes. Bod~ temperature must be maintained within a certain range for chemical reactions and cell processes to perform efficiently. If the body temperature falls too low or increases too high, chemical reactions will slow down or may stop. Atmospheric pressure is the force of air on the body surface by the weight of air. It is important in breathing and in the exchange of oxygen and carbon dioxide in the lungs. To maintain homeostasis there are control mechanisms. Control mechanisms consist of three parts: i. receptor It responds to sensory stimuli from the internal and external environments. The information is sent along afferent pathways to the control center. 2. control center It consists of the brain and spinal cord which interpret and analyze the information and determine an appropriate response.  Information is then sent along efferent pathways to the effector. 3. effector It consists of tissues, organs, or glands that perform a motor response to the original stimulus that was received by the receptor. The response involves a feedback mechanism. If the response slows down or inhibit~ the stimulus it is a neqative feedback mechanism. If the response speeds up or enhances the stimulus, it is a positive feedback mechanism. Most control mechanisms for homeostasis in the human body are negative feedback mechanisms.

Communism :: essays papers

Communism This definition is right and is fully accurate, but it only demonstrates the theory of communism and doesn^t explain how it really worked. It doesn^t say that the theory never worked out, because it is impossible to make it work. I am going to tell some things about communism in USSR where my parents lived all their lives, but when I was born it was already dying out. So, mostly everything that I am going to tell is based on what my parents and grandparents told me about life in USSR. Communism suggests that everybody is equal in rights and economically. That meant that everybody would be paid the same for all kinds of jobs, so the janitor and doctor or lawyer would be paid the same amount of money for totally different jobs. That is obviously unfair and impossible. Since everybody was supposed to be equal, no one in the government could have too much power, and that is why they made took people who were elected from each area and these were supposed to be the government. They were supposed to make the decisions, elect all the other government officials and all the other very important things. That made the ordinary man think that the government is controlled by people just like him, with only high school education (some even without it), poor, being in politics for the first time in their lives. That is impossible. Such people can run no government. The most annoying thing is that almost no one noticed that, and if someone did, they were immediately terminated without any questions. There was a small group of people who controlled everything in the country. It was mostly the KGB and the General Secretary. Just look at the name they picked, it suggests that he not the most powerful man in the country; he is just a small general secretary. That^s all he is. How obviously stupid all this seems now. But at that time it was almost a religion, if one did not believe in it with all his/her heart he/she were terminated or sent to concentration camp where they either died or lived there for many years until all their doubts were beaten out of them. Jewish people were some of the people to who the government was the most unfair. They couldn^t get a good education, good job, anything good or well paid. There were only two ways: the army (or navy) or some pitiful civilian job, like a janitor, or some other dirty job with a salary, with which you can barely buy something Communism :: essays papers Communism This definition is right and is fully accurate, but it only demonstrates the theory of communism and doesn^t explain how it really worked. It doesn^t say that the theory never worked out, because it is impossible to make it work. I am going to tell some things about communism in USSR where my parents lived all their lives, but when I was born it was already dying out. So, mostly everything that I am going to tell is based on what my parents and grandparents told me about life in USSR. Communism suggests that everybody is equal in rights and economically. That meant that everybody would be paid the same for all kinds of jobs, so the janitor and doctor or lawyer would be paid the same amount of money for totally different jobs. That is obviously unfair and impossible. Since everybody was supposed to be equal, no one in the government could have too much power, and that is why they made took people who were elected from each area and these were supposed to be the government. They were supposed to make the decisions, elect all the other government officials and all the other very important things. That made the ordinary man think that the government is controlled by people just like him, with only high school education (some even without it), poor, being in politics for the first time in their lives. That is impossible. Such people can run no government. The most annoying thing is that almost no one noticed that, and if someone did, they were immediately terminated without any questions. There was a small group of people who controlled everything in the country. It was mostly the KGB and the General Secretary. Just look at the name they picked, it suggests that he not the most powerful man in the country; he is just a small general secretary. That^s all he is. How obviously stupid all this seems now. But at that time it was almost a religion, if one did not believe in it with all his/her heart he/she were terminated or sent to concentration camp where they either died or lived there for many years until all their doubts were beaten out of them. Jewish people were some of the people to who the government was the most unfair. They couldn^t get a good education, good job, anything good or well paid. There were only two ways: the army (or navy) or some pitiful civilian job, like a janitor, or some other dirty job with a salary, with which you can barely buy something

Coke & Pepsi Learn to Compete in India

The political environment in India has proven to be critical to company performance for both PepsiCo and Coca-Cola. There were specific aspects of the political environment in India that played key roles in both companies’ difficulties. India is a nation with a strong belief in loyalty and devotion to their culture and Indian products. The government promoted the consumption of local products rather than that of foreign products. The Indian government also has very strict trade policies which created many entry barriers for both PepsiCo and Coca-Cola.The stern rules and regulations of their government did not allow either company to freely promote their products. Typically, foreign investment denotes that foreigners take a somewhat active role in management as part of their investment and typically works both ways. India practices a more controlled foreign investment environment. Both companies should have done extensive research on India’s political environment before attempting to enter their market.Due to the trade barriers established by the Indian government Coca-Cola’s first entry into India’s market was not successful. Coca-Cola’s first entry into India was in 1958 but they existed in 1978 after the Indian government asked them to reveal their formula. Coca-Cola refused and decided to shut down. PepsiCo entered the market during Coca-Cola’s 16 years of exile, in 1989. Both companies face major controversy when the Centre for Science and Environment (CSE), an environmental policy-orientated non-governmental organization (NGO) announced the results of a study.The study found that soft drinks sold in India, including those made by both companies, contained a cocktail of pesticides at concentrations far higher than considered permissible by national authorities and the World Health Organization (WHO). CSE had established a formidable reputation for accurate data-gathering and sharp analysis. They tested numerous bran ded aerated drinks sampled from different parts of India, which included 28 Coke brands and 29 more from Pepsi. During the crisis with contaminated water in India, Pepsi and Coca-Cola were both under fire with the consumers and government.Politicians made it exceptionally difficult for both companies to redeem themselves with the facts they had, but Coca-Cola seemed to have a more difficult come-back than Pepsi. India’s market is enormous in terms of population and geography. Both PepsiCo and Coca-Cola were able to reposition themselves in India’s market and gain some success. In response to the sheer scale of operations in India both companies produced promotional activities that aligned with sporting events and festivals in India.This gave customers the opportunity to take advantage of special sales and contests that encouraged the purchase and continued consumption of both products. Coca-Cola also changed their pricing policy by reducing their prices by up to 25 per cent. Coca-Cola offers a wide range of products to the customers and is always looking to innovate and come up with innovations. PepsiCo also offers different varieties of products ranging from carbonated to noncarbonated soft drinks, offered in a variety of different sizes.PepsiCo also, like Coca-Cola, had to adapt to the pricing barriers in India in order to survive, by making their products pricing more sensitive to India’s economy. Both companies participated in TV campaigns to promote brand awareness and PepsiCo strategy was using celebrities in the introduction of any new product. Coca-Cola had a different approach by dividing the Indian market into two different youth categories; they were able to focus on an all-encompassing theme. Global localization is a policy that both companies have implemented successfully.It includes the ability to provide shoppers with information in their native language and currency. PepsiCo gained success in this area by forming joint ventu res with two local partners of India upon initial entry to their market. To continue the adaption of Pepsi they renamed the product in India to conform to foreign collaboration rules. And the strongest global localization strategy that PepsiCo implemented was sponsoring world famous Indian athletes. PepsiCo growth has been guided by PepsiCo’s global vision of â€Å"Performance with Purpose†.This means that while businesses maximize shareholder value, they have a responsibility to all the stakeholders, including the communities in which they operate, the consumers they serve and the environment whose resources they use. PepsiCo achieved a significant milestone, by becoming the first business in the PepsiCo system to achieve ‘Positive Water Balance’ (PWB) – it replenishes more water than it consumes in its manufacturing operations. Coca-Cola, on their second go round, joined forces with local snack vendors and participated in special promotions of Ind ia’s cultural events.There are many lessons to be taken away from bot PepsiCo and Coca-Cola’s experience with India. PepsiCo should have learned that it is beneficial to keep with local tastes and to pay attention to market trends. Also, they should take into account that celebrity advertising has a favorable appeal. Coca-Cola should have learned that it is imperative to pay attention and proceed with caution when it comes to deals made with the government. They should also have realized the importance of maintaining a good relationship with foreign governments.Coca-Cola should recognize the significance of investing in quality products as well as the crucial effects of advertisement to the entry of a new market. Although, both companies has their share of success within India it is my belief that Pepsi has the ability to withstand longevity in their success. The reason I think PepsiCo over Coca-Cola is that Pepsi entered the Indian market on a much better foot. Also i n was genius of PepsiCo to enter a joint venture in launching into the bottled water industry. Coca-Cola as well had to branch out into other products to stay current to the market needs in India.Most recently Coca-Cola has decided to enter the growing Indian market for energy drinks, forecasted to grow to $370 billion in 2013 from less than half that in 2003. The competition in this market is fierce with established firms including Red Bull and Sobe. With its new brand Burn, Coke initially targeted alternative distribution channels such as pubs, bars, and gyms rather than large retail outlets such as supermarkets. I understand the target market concept but I believe this strategy approach limits the new product exposure to the public. These distribution limitations could result in the potential loss of market share.

Cortical Hyperarousal and Adolescent Insomnia - Free Essay Example

Sample details Pages: 2 Words: 577 Downloads: 8 Date added: 2019/03/13 Category Sociology Essay Level High school Tags: Childhood Essay Did you like this example? Children who have abnormal tracing patterns measured by an EEG and show signs of apparent cortical hyperarousal will most likely develop insomnia as an adolescent. Insomnia is a common sleep disorder that can arise from multiple issues including anxiety, PTSD, and depression. Children who experience cortical arousal can encounter persistent problems falling asleep leading to deficient sleeping patterns. Don’t waste time! Our writers will create an original "Cortical Hyperarousal and Adolescent Insomnia" essay for you Create order By measuring a childs brain activity using an EEG, a neurologist can discover unusual tracing patterns pertaining to cortical hyperarousal; therefore; predicting early signs of insomnia (Fernandez-Mendoza et al., 2018). If a child has early onset symptoms of insomnia, treatments such as behavioral therapy, benzodiazepines, or cognitive behavioral therapy can be used as treatments and preventative strategies. Fernandez-Mendoza et al. (2018) had performed an EEG on two groups of children (sleeping problems or no sleeping problems) during their non-REM sleep to then be studied and see who has higher levels of cortical hyperarousal in association with poor sleeping habits. Childhood Adversity and Adolescent Insomnia Children who have been exposed to at least one adversity in their life are more likely to have insomnia as an adolescent than ones who havent. Childhood maltreatment such as abuse and neglect have been studied in correspondence to children with sleeping issues but children exposed to violence are not considered victims (Wang, Raffeld, Slopen, Hale, Dunn, 2018). This is yet still an adversity that can easily occur during ones childhood because they are much more sensitive during this stage of their life. Adversities during childhood can play a major role in a persons adolescent life and can lead to higher levels of stress and anxiety causing them to develop sleeping problems such as insomnia. Patients with psychiatric disorders such as PTSD, major depression, and generalized anxiety disorder are excluded from this theory. Childhood Insomnia During the Day Insomnia is not only an issue at night when a person is sleeping, it is a 24-hour disorder and effects people all day long. One cannot dismiss cortical hyperarousal during the day. Treatments for insomnia should be focused on improving life quality during the day in addition to at night. Impairment of day time functions are typically shown in patients with insomnia which will affect the way their cortical hyperarousal throughout the day altering in high functioning EEG waves (Cortoos, Verstraeten, Cluydts, 2006). This piece of information is vital because if a child is affected daily due to lack of sleep, it can be crucial when detecting insomnia. High Frequency EEG and Cortical Hyperarousal Cortical hyperarousal can lead to insomnia which puts those individuals at risk for psychiatric disorders (Fernandez-Mendoza et al., 2018). When monitoring children during non-REM sleep, if they have an increased beta EEG power it can be a significant predictor of insomnia symptoms in adolescents. Fernandez-Mendoza et al. (2018) conducted a study was conducting with 45 children aged 6-11 years old; 25 were reported by their parents as having sleeping problems and 20 were reported no sleeping problems. After 8 years, they followed up with the children to see if they were reported as having insomnia or not. The children were set up to EEG machines and were monitored from 22:00-7:00. After the EEG tests were observed, it is apparent that if a child was reported as having cortical hyperarousal, he/she showed increased EEG beta activity while in non-REM sleep. These children were then followed up with 8 years later and reported as having insomnia. Prior to insomnia diagnosis, cortical hyperarousal was present and may be and early onset sign of insomnia.