"Circadian rhythm" Essays and Research Papers

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  • Circadian Rhythms

    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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  • Circadian Rhythm

    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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  • Circadian Rhythms

    Circadian rhythm sleep disorders are very disruptive to a person’s health‚ and are a common occurrence in humans. By definition‚ circadian rhythm is the cyclical 24 hour period of human biological activity where people usually sleep for eight hours and are awake for sixteen. There are two main types of circadian rhythm disorders: exogenous and endogenous. Examples of exogenous disorders include shift worker disorder and jet lag disorder. Some endogenous disorders include advanced sleep phase

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  • The Circadian Rhythm Effect

    processes. Circadian rhythm in all mammals is a process that describes our inner master “clock” and our daily functionality. “Circadian timing is structured in such a way as to receive information from the external and internal environments‚ and its function is the timing organization of the physiological and behavioral processes in a circadian pattern (1)”. With the 24 hour cycle put in use we determine the sleeping and feeding patterns of all animals. Since the circadian rhythm is such a vital

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  • Describe and Evaluate Circadian Rhythms

    Describe circadian rhythms (8marks) Circadian rhythms occur every 24 hours; an example of a circadian rhythm is the sleep-waking cycle. We are diurnal animals who are active during the daytime and asleep at night‚ other animals are nocturnal they are active at night but asleep during the day. The circadian rhythm depends on the interaction of physiological and psychological processes to be tuned into the sleep-waking cycle so energy is provided when needed. As diurnal humans we have a fairly stable

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  • Outline the Circadian Rhythm (8)

    The Circadian rhythm is a daily cycle of biological activity based on a 24-hour period and influenced by regular variations in the environment‚ such as the alternation of night and day. Circadian rhythms include sleeping and waking in animals and flowers closing and opening. The 24-hour sleep–waking cycle is a good example of a circadian rhythm because it clearly illustrates that circadian rhythms depend on an interaction of physiological and psychological processes. Our fairly consistent sleep pattern

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  • Discuss the Role of Endogenous Pacemakers in the Control of Circadian Rhythms

    Discuss the role of endogenous pacemakers in the control of circadian rhythms [AO1 8 marks‚ AO2 16 marks] An endogenous pacemaker is an internal biological clock that controls the way in which many of our biological rhythms behave. Many of these rhythms run on a 24 hour basis‚ such as the sleep/wake cycle‚ bodily temperatures and some of our hormones. The main endogenous pacemaker in mammals is the suprachiasmatic nucleus (SCN)‚ which is located in the hypothalamus. It receives information

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  • Discuss the role of endogenous pacemakers and exogenous zeitgebers in the circadian rhythm

    zeitgebers in the circadian rhythm. 24 Markers Circadian rhythm is rhythms that last 24 hours‚ one day. An example of a Circadian Rhythm is the sleep-wake cycle. Because this rhythm occurs daily‚ it is tempting to automatically assume that the factors which control it are exogenous zeitgebers‚ such as natural light patterns‚ TV‚ radio‚ birdsong‚ Research however has gone into this to find out what exactly controls the circadian rhythms. Research by Siffer implies that circadian rhythms are controlled

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  • Biological Rhythms

    Mini - assignments for biological rhythms 1. Outline what we mean by an endogenous pacemaker (3) Endogenous rhythms are rhythms that aren’t imposed by the environment but generated from within the organism. Since many of our biological cycles follow an approximation 24-hour rhythm‚ even in the absence of external stimuli‚ it follows that there must be some kind of internal biological clock. 2. What is the name given to external events that play a role in rhythmic activities? Give

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  • Outline and Evaluate the role of endogenous pacemakers and exogeneous zeitgebers in the control of circadian rhythms

    control of circadian rhythms (8+16) Circadian rhythms are biological rhythms that occur every 24 hours‚ an example of a circadian rhythm is the sleep-wake cycle‚ another circadian rhythm is body temperature which is at its lowest at around 36 degrees at night and it peaks in the morning at 38 degrees. Endogenous pacemakers are internal body ’clocks’ that will modulate biological rhythms‚ the SCN is an example of an endogenous pacemaker‚ it controls our body temperature cycle. Circadian rhythms can also

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