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When admitted to the emergency room, John was holding his right hand, which had a deep puncture hole in its palm. He explained that he had fallen on a nail while exploring a barn. John was given an
antitetanus shot to prevent neural complications. Tetanus bacteria fester in deep, dark wounds, but how do their toxins travel in neural tissue?
Tetanus grows in a wound and secretes a toxin that invades systemically and causes muscle spasms. The initial symptom is cramping and twitching of muscles around a wound. [ Complications include fractures, bowel impaction, intramuscular hematoma, muscle ruptures, and pulmonary, renal, and cardiac problems. ]
Expert answered|migzptz|Points 3718|
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Asked 12/6/2011 10:17:55 AM
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Jim Fitch decided that his physique left much to be desired, so he joined a local health club and began to "pump iron" three times weekly. After three months of training, during which he was able to lift increasingly heavier weights, he noticed that his arm and chest muscles were substantially larger. Explain the structural and functional basis of these changes.
Weegy: Weight training provides us with exercises that take skeletal muscles through their normal range of motion. [ So, structurally, when a muscle is worked against a resistance it is not accustomed to, it will begin to adapt to the resistance, and neuromuscular facilitation will also occur. There are two theories I am familiar with that deal with muscular growth. The first is hypertrophy, where individual muscle fibers become bigger, therefore making the muscle bigger. The other theory is hyperplasia, which is the dividing of a muscle fiber. When thousands of muscle fibers divide, this will also make the entire muscle larger. Because Jim challenged the muscle by increasing the weights gradually, the muscle was able to adapt gradually. Overtraining must not have occured here. He allowed the muscle time to recover before working it again. I hope this helps you. ] (More)
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Asked 12/2/2011 9:02:34 AM
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When a suicide victim was found, the coroner was unable to remove the drug vial clutched in his hand. Explain the reasons for this. If the victim had been discovered three days later, would the coroner have had the same difficulty? Explain
Weegy: The body may be dead for more than a day, that's why the vial was stuck in his hand. Yes, it will be the same if tbe body was found 3 days after the time of death. (More)
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Asked 12/2/2011 9:21:55 AM
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Name four criteria used in naming muscles, and provide an example (other than those used in the text) that illustrates each criterion
Weegy: Muscles are named according to size, shape, direction of fibers, location, number of origins, insertions and muscle action (More)
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Asked 12/2/2011 9:55:37 AM
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Name four criteria used in naming muscles, and provide an example (other than those used in the text) that illustrates each criterion
Weegy: Skeletal muscles are named based on location, shape, size, & direction. For ex., the temporalis muscle overlies the temporal bone. (More)
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Asked 12/3/2011 2:31:53 PM
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