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Exchange of calcium between bone and ext...

Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones
What will happen if very less amount of `Ca^ (++)` is in the extracellular fluid ?

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Less level of `Ca^ (++)` in extracellular fluid is linked with hypothyroidism. It stimulates excited condition of muscles and nerves. As a result spasm of larynx, face, fore limb and hind limb remain contracted for long time.
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