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Pavel [41]
3 years ago
13

Define aging and old age

Health
1 answer:
Kipish [7]3 years ago
3 0

Answer:

Explanation:

Ageing or aging (see spelling differences) is the process of becoming older. ... In the broader sense, ageing can refer to single cells within an organism which have ceased dividing (cellular senescence) or to the population of a species (population ageing).

Old age, also called senescence, in human beings, the final stage of the normal life span. ... For statistical and public administrative purposes, however, old age is frequently defined as 60 or 65 years of age or older.

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What does your brain do with connections it doesn't use?
nikdorinn [45]

Answer:

This is synaptic pruning- it removes them

Explanation:

The gaps and the portions of neurons  between adjacent neurons is called synapse.It role is to moderate synaptic connections among neurons.

As organisms (man and other higher animals)develop  from birth to adult,new synaptic connections are formed,and old ones are removed.The process whereby the the axon and dendrite, as part of the synapse, decay  and removed by the brain is called  synaptic pruning or pruning process.

This process begins at childhood and continue till maturity- at mid twenties.it occurs during sleep.

it helps to improve learning and memory,because new connections are  made to replace the old ones,and therefore smooth transition of the brain from childhood to adulthood

Three models have been used to explain pruning-Axon degeneration,retraction and Axon shedding.

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3 years ago
Which of the following stretches can be harmful because they may far exceed the stretchable limits of the tissue involved and ca
Black_prince [1.1K]

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kotykmax [81]

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Explanation:

6 0
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<u></u>

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