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Anonymous users2024-02-15How they are most often is sometimes or sometimes normal.
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Anonymous users2024-02-14Brain: The aging of the brain is mainly manifested by cerebral atrophy, especially in the frontal and temporal lobes, which is manifested as widening of the sulcus and cerebral fissure, narrowing of the cerebral gyrus, and enlargement of the ventricles, and the enlargement of the ventricles after the age of 70 is considered to be "physiological aging" changes. The aging of cerebral blood vessels is manifested by cerebral arteriosclerosis.
The histological changes of the brain in the elderly are manifested as a decrease in the number of cranial nerve cells, especially in the brain and cerebellar cortex, followed by the substantia nigra and locus coeruleus, some people believe that the total number of human brain nerve cells is 14 billion to 20 billion, and the average daily loss is about 100,000 after the age of 30, and the age of 77 is reduced to 2 3 at birth, and only 2 2 at the age of 20 at the age of 90. In older people, nerve cell protrusions are significantly reduced, especially the basal dendrites associated with intercortical communication.
Increased lipofuscin deposition in nerve cells.
Marinesco bodies, i.e. eosinophil inclusion bodies within the nucleus of substantia nigra and maculocyte coeruleus, are visible 1-5 and increase with age.
Axonal dystrophy is one of the manifestations of physiological aging of the nervous system, and the incidence of axonal dystrophy is high in the elderly, which is manifested as axonal distension and spherical shape, which may be caused by terminal synaptic abnormalities or axonalflow disorders, mainly distributed in the substantia nigra, basal ganglia, and nuclei of thin and cuneiform bundles.
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Anonymous users2024-02-13If you want to briefly describe the physiological and pathological changes of the nervous system in the elderly, you can go to the Internet, which has a very detailed knowledge about this.
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Anonymous users2024-02-12Regarding the physiological changes in the elderly, the description of the cavity is wrong with () aDue to the low immune function of the respiratory tract, bronchioles secretions are increased and prone to retention, so the elderly are prone to respiratory tract infection.
b.The ability to concentrate and dilute urine in the elderly is reduced.
c.The increased secretion of gastric acid in the elderly increases the risk of peptic ulcer.
d.Decreased glucose metabolism in the elderly.
Correct answer: c
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Anonymous users2024-02-11Which of the following is NOT a physiological change in older adults?
a.Graying of hair or hair loss.
b.Sagging, droopy eyes and face.
c.The eyeballs are sunken.
d.Gain weight and gain weight.
Correct answer: c
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Anonymous users2024-02-10Which of the following is NOT a physiological change in a person who is old and cautious in his remaining years of filial piety () aGraying of hair or hair loss.
b.Sagging, drooping eyelids.
c.The body size is fat, and the body friend has increased his weight.
d.The eyeballs are sunken and the pupils are constricted.
e.Age spots.
Correct answer: d
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Anonymous users2024-02-09In the process of aging, the common changes in the spine system of the elderly do not include ().
a.Myocardial contractility decreases.
b.Decreased cardiac output.
c.Both arterial and venous pressures are elevated.
d.The heart rate slows down.
e.The heart increases in weight and in size.
Correct answer: c
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Anonymous users2024-02-08a.Graying of hair or hair loss.
b.Sagging, droopy eyes and face.
c.Sunken eyeballs.
d.The body shape is cheating and fat, and Bu Yu has gained weight.
Correct Answer: Scattered C
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