"Discuss the role of endogenous pacemakers and exogenous zeitgebers in biological rhythms" Essays and Research Papers

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    Circadian Rhythms

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    1. Describe how circadian rhythms are associated with sleep deprivation. 2. Explain the results of the sleep deprivation assessment. 3. Do you agree‚ or disagree‚ with the results. Why‚ or why not? 4. If you are sleep deprived‚ what steps could you take to get more or better quality of sleep? Alternatively‚ if you are not sleep deprived‚ what techniques allow you to get quality sleep most nights of the week? Circadian rhythms: Their role and dysfunction in affective disorder Press

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    Do Endogenous or Exogenous Shocks Have the Greater Impact on Economic Output The UK is an open economy meaning that a high percentage of our national income and output comes from trading with the rest of the world; we are highly integrated within the global economy. Endogenous models explain cyclical fluctuations in terms of internal events or policies i.e. changes which lie within the economic system; For example: if the economy is already near full employment (at Yf)‚ with only a small output

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    Pacemaker

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    In the qualitative study‚ Cardiovascular Patients’ Experience of Living with Pacemaker: Qualitative Study‚ the objective was to look into the experiences of patients living with a pacemaker. In the introduction‚ the authors describe the reason of cardiovascular disease being one of the most common causes of disease associated mortality being that there is an increase in urbanization‚ industrialized lifestyle and decrease physical activity as well as socio-economic conditions. Coronary artery disease

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    Infradian rhythms are biological rhythms that last for more than 24 hours. They are controlled by the hypothalamus‚ an endogenous pacemaker which requires input from exogenous zeitgebers so the rhythm can run correctly. An example of an infradian rhythms is the mentstrual cycle. This is controlled by the pituary gland which is an endogenous pacemaker. The pituary gland releases hormones which cause an egg in the ovaries to ripen and produce oestrogen. Whilst it is known to be biological due to its

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    Circadian Rhythm

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    Circadian rhythm Although most people tend to think that manifestations of body function such as temperature and blood pressure are constant throughout the day‚ the fact is that many functions change in cyclic patterns – especially those that are affected by hormones‚ such as cortisol. These daily fluctuations‚ or circadian rhythms are fundamental to all organisms‚ from bacteria to humans. Circadian rhythms help coordinate and synchronize our internal body functions‚ as well as our interactions

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    Discuss biological factors in the formation and development of gender roles. As people grow older they began to develop more complex ideas about gender. This includes their sense of gender identity as well as their knowledge of gender roles. Gender identity is one’s sense of being male or female. By the age of two‚ most children can correctly label their own or another person’s sex or gender. Between the ages of 3 1/2 to 7‚ children grasp be at the idea that a person’s biological characteristics

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    Discuss two biological explanations of depression (8+16 marks) AO1: One biological explanation for depression is family studies. Family studies have proved that having a first-degree relative with depression appears to be a risk factor of depression. These studies select people who already have the depression (the probands) and examine whether other members of their family have been‚ or might be diagnosed with depression. Research has found that around 20% of such relatives have depression compared

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    Types of Pacemakers

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    TYPES OF PACEMAKERS The classification of pacemakers into different types is based on the mode of application of the stimulating pulses to the heart. EXTERNAL PACEMAKERS: These are used when the heart block presents itself as an emergency and when it is expected to be present for a short time i.e during critical post operative periods and in patients during cardiac surgery‚ involving the valves or septum. * The pacemaker is placed outside the body. It may be in the form of wrist watch or in

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    Discuss Biological Treatments for Schizophrenia (24 marks) The vast majority of people who suffer from schizophrenia will receive some form of treatment to try and diminish their symptoms. There are drug therapies that help patients to function as well as possible‚ and were founded in the 1950’s when the drugs were given to hospital patients to try and calm their anxiety before surgery but were also found to relieve the symptoms of schizophrenia and so consequently were used for treatment of

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    Discuss the biological approach in psychology. Refer to at least one other approach in your answer. (12 marks) The biological approach focuses on both the physiological and evolutionary aspects which explain human behaviour. The causal level of analysis incorporates physiological explanations‚ such as the effect of nerves and hormones on behaviour. According to biological psychologists‚ behaviour is controlled by the nervous system‚ which consists of the central nervous system (the brain and the

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