What physical changes, including those in the brain, can we expect as we age?

What physical changes, including those in the brain, can we expect as we age?

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January 1, 2021
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What physical changes, including those in the brain, can we expect as we age?

 

Answer and ExplanationSolution by a verified expert

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Aging on neurons has a vast effect on the functioning of the brain leading to impairment in daily activities.

Explanation

The generation of new neurons occur during the whole life of a person. Brain plasticity is visible for some years after the birth but the process of neurogenesis and formation of synapses is shown throughout life. There are some factors through which the brain of an individual in old age experience physical changes:
 

With aging, the degeneration of neurons and reduced functioning is seen. Overall, this shows slower functioning of the brain in terms of processing the knowledge.
On the contrary, aging reveals new abilities of the brain with aging like the combined function of both hemispheres. Theleft hemisphere controls the right side of the body and involved in logic and reasoning whereas the right hemisphere controls the left side of the body and performs creative functions.
The brain tends to be more active with involvement in physical and mental activities Withan increase in physical and mental activity like exercising, playing outdoor games or solving puzzles and reading good books, there is an increase in the blood supply to the brain and generation of new neurons is displayed.
The studies show that as the age increases, the generation of neurons decreases which might lead to illness in adults causing problems like Alzheimer's disease or any other psychological illness.
The neurons send signals from the sensory organs to the brain and this process is called signaling. Signal helps in perception and it becomes difficult for people to process things leading to different psychological illnesses.

Verified Answer

There are a lot of physical changes in the brain as the age of an individual increases. Few of the physical changes are as follows:
 

As age increases the rate of generation of new neurons decreases and so is the functioning of existing ones.
The brain weight and volume decreases. The loss of neurons varies with region of the brain.
For example, in areas functioning for sensory and motor activities has higher loss as compared to the region involved in thinking or regulating essential life processes like breathing.
The degeneration also involves a reduction in the level of neurotransmitters, which are essential for the process of signaling.
The integration of left and right hemispheres occurs, thus making it perform both creative and cognitive functions.
Moreover, at younger age, the brain has specific areas to control an action but with aging the brain can use its other parts to do the same.

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