1. Brainstem- It begins where the spinal cord swells after entering the skull. It regulates all automatic survival roles‚ such as breathing and heartbeats. 2. Thalamus- The thalamus is the uppermost part of the brainstem. It directs information to the sensory cortex and provides feedback to the cerebellum and medulla. 3. Medulla- The foundation of the brainstem. It manages heartbeat and breathing. 4. Reticular formation- The nerve region travelling through the brainstem and thalamus. The network
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Bibliography: 1. Disease Information‚ Botulism. 18 October 2001. http://www.cdc.gov/ncidod/dbmd/diseaseinfo/botulism_g.htm#What%20is%20botulism 2. Merriam-Webster Online Dictionary. 2004 Merriam-Webster Incorporated. http://www.m-w.com/
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men vs women.txt A male brain is about 10% larger than the female brain and has 5% more brain cells. That sounds like good news for men but the female brain more than makes up for its disparity in size in other ways.But women have more nerve cells in certain areas. Women also tend to have a larger corpus collusum — the group of nerve fibers that connects left and right hemispheres. That makes women faster at transferring data between the computational‚ verbal left half and the intuitive‚ visual right
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pore‚ in turn interacting with the gustatory hair. Once it is stimulated‚ the message then travels down your glossopharyngeal cranial nerve in order for you to interpret the taste. These neural impulses are transmitted through neurons and membrane potentials. Your insula then uses the gustatory cortex to interpret the sensory information from your tastebuds and you are able to determine that the burger you are eating is‚ in fact‚ extremely good. Your sense of balance may be impacted as the slope of
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What is cognitive psychology? The study of mental processes such as perceiving‚ remembering‚ and reasoning. Analytic introspection- analyze current perception into its elementary parts. Structuralism-complex conscious experiences can be broken down to elemental structures (component parts) of sensation and feelings. Introspection-look at a stimulus and report sensations and feelings to create a description of conscious experience School of functionalism-learn how the mind produces useful behavior
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Neurogenic Shock Neurogenic shock is a type of shock that is caused by a spinal cord injury that affects important nerves in the nervous system. Injury to the nervous system causes the walls of blood vessels to relax‚ which increases the blood pressure. Neurogenic shock mainly affects the spinal cord. The spinal cord consists of nerves that carry incoming and outgoing messages between the brain and the rest of the body. Neurogenic shock occurs when a spinal cord injury happens‚ particularly involving
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The brain has a specialized vasculature that extends from the surface to deep within the brain tissue‚ reaching all regions in order to meet the brain’s high metabolic demands. Exposures to toxic compounds entering the blood have the potential to access this vasculature leaving the brain susceptible to possible neurotoxicity. Currently‚ there are over 200 known chemicals that have been correlated with neurotoxicity. A protective mechanism called the blood brain barrier (BBB) was first discovered
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Speed of the Human Neural Impulse Helmholtz (1821-1894) was a German scientist. In 1850‚ he measured the neural impulse in frogs. By strapping down the frogs and putting electrical voltage into their legs‚ Helmholtz measured the time it took for the frogs’ leg to twitch. Helmholtz used a galvanometer to measure the neural impulse. He found that the neural impulse in frogs was 83-90 ft/s. Afterwards‚ Helmholtz went on to test the neural impulse in humans. He put a low grade electrical voltage to humans’
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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; protected by bone 2. Axon carries impulses away from
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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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