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Q: What is classified as disuse denervation and senile?
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What happens with demyelination and denervation?

Demyelination is the loss of the protective covering (myelin sheath) around nerve fibers, which can lead to impaired nerve conduction. Denervation refers to the loss of nerve supply to a particular muscle or organ, which can result in muscle weakness or dysfunction. Both conditions can lead to a variety of neurological symptoms depending on the location and extent of the damage.


What is the neuronal basis of denervation hypersensitivity?

Denervation hypersensitivity is caused by an increase in the sensitivity of postsynaptic neurons to neurotransmitters due to the absence of inhibitory input from the presynaptic neuron. This can lead to an increased response to neurotransmitters and a lower threshold for firing action potentials in the postsynaptic neuron, resulting in a heightened sensitivity to stimuli.


What does disuse mean?

Disuse means the state of something not being used or neglected. It refers to a lack of activity or attention given to something over a period of time.


Can adaptation s occur throuh use and disuse?

Yes, the concept of adaptation through use and disuse was proposed by Jean-Baptiste Lamarck. He suggested that organisms could pass on acquired traits from use or disuse of certain organs to their offspring. However, this idea has been largely discredited in modern biology, as adaptation is primarily driven by natural selection acting on genetic variations.


Example of disuse theory under retention?

Disuse theory in memory retention suggests that information which is not rehearsed or practiced over time will fade away from memory. For example, if a person learns a new language but does not use it regularly, they may forget the vocabulary and grammar rules due to disuse. This theory highlights the importance of continuous practice and application in order to retain information in memory.