(neurons). Without neurotransmitters our organism wouldn’t have the ability to function because they are responsible for the operations in our body. With neurotransmitters‚ the brains sends signals to the other parts of the organism to perform the actions they need to. In past decades‚ numerous experiments were done to prove that and to find more about the neurotransmitters. In 1987‚ Dr. Jon Levine of the University of California in San Francisco found out that placebo can be expressed as chemical
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adherence to the law‚ and legal knowledge is vital to HR. This knowledge in combination with the advisory role that HR plays in any organization is crucial. It can save the organization of millions of dollars arising from workplace violation‚ potential lawsuits and negative publicity. Numerous Supreme Court cases that influence HRM practices are presented‚ including: (a) Griggs v. Duke Power (1971) (b) McDonnell Douglas v. Green (1973) (c) Diaz v. Pan Am World Airways (1971) (d) B Regents
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HOW DOES THE STRUCTURE OF NEURONES REFLECT THEIR FUNCTION The neuron or nerve cell is the structural unit of the nervous system. It is able to transmit messages between the central nervous system (CNS) and all parts of the body. There are two basic types of neuron namely - the sensory neuron (afferent) and the motor neuron (efferent) (Bear et al.‚ 3rd edition). The sensory neurons (Fig. 1-1) are capable of transmitting the sensation of pain and consist of three major portions which are the dendritic
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1. Sensation: the process by which sensory receptors and nervous system receive and represent stimulus energies from our environment 2. Perception: the process of organizing and interpreting sensory information‚ enabling us to recognize meaningful objects and events 3. Bottom-up Processing: analysis that begins with the sense receptors and works up to the brain’s integration of sensory information 4. Top- Down Processing: information processing guided by higher-level mental processes
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Homoestatic plasticity Brain is not hard-wired but is constantly undergoing modifications to store information and adapt to changes in the environment. Nervous systems are thus faced with a fundamental problem: how to allow plastic mechanisms to shape their output and function‚ without compromising the stability and integrity of the underlying circuits that drive behavior. Homeostatic plasticity mechanisms that allow neurons to sense how active they are and to adjust their properties to maintain
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Neurocore Diagnostics WHAT THE PATIENT CAN EXPECT A technician places electrodes‚ similar to EKG leads‚ to the patient’s legs or arms. Then a low intensity electric current is directed over the nerves that lead to those electrodes so that a computer can record and evaluate the consequent nerve impulse for velocity‚ onset and amplitude. Neuropathies are caused by damage to the nerves axon and/or damage to the myelin sheath surrounding the nerve. If a response is slower than normal‚ damage
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Effects of Selected Drugs During anesthesia‚ there is a great amount of drugs used to suppress the pain that would occur to the body. There are some common drugs that are used. Alcohol‚ Aspirin‚ Lidocaine‚ Morphine‚ and Succinylcholine are all used during anesthesia. Each is used to interrupt the pain signals during surgeries. Without these medications‚ the body would not be able to withstand such trauma occurring to perform the procedure fully. For many years‚ men and women have used the
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Nervous System Functions of the Nervous System 1. Detect changes and feel sensations 2. Initiate responses to changes 3. Organize and store information Divisions 1. Central Nervous System – brain and spinal cord 2. Peripheral Nervous System – cranial nerves and spinal nerves (relays info to/from the CNS) - Autonomic Nervous System Nerve Tissue – neurons (nerve fibers) and specialized cells (Schwann‚ neuroglia) 1. Neuron cell body contains the nucleus; cell bodies are in the CNS or trunk;
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Multiple Sclerosis‚ also known as MS‚ is a disease causing demylination of the white matter in the spinal cord and brain. The nerve damage slows‚ blocks or distorts transmission of nerve impulses. MS is characterized by periods of exacerbation and remissions. The crippling disease is a major cause of chronic disability in young adults. It usually becomes symptomatic between the ages of twenty and forty with twenty-seven being the average. Prognosis varies greatly from person to person. MS can progress
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LABORATORY REPORT Activity 2 Twitch Contractions and Summation Name Instructor Date PREDICTIONS Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable 2. Independent Variable 3. Controlled Variables Effect of Muscle Length on Contraction 1. Dependent Variable 2. Independent Variable
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