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Question
What is ageing ? Write three important symptoms in human body.
What is ageing ? Write three important symptoms in human body.
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Solution
Ageing refers to the degenerative changes in the body of the animal after it has attained full growth and adulthood.
Symptoms:
(1) Heart: Compared to a thirty-year-old person, the heart of a 70-year-old man pumps only 65% of blood per minute. Consequently, the blood going to the brain and kidneys is reduced to 80% and 42% respectively.
(2) Mitochondria: It gets generated in the cells of old tissues reducing the rate of respiration and carbohydrates metabolism.
(3) Plasma membrane: The permeability of plasma membrane gradually decreases with the advancing age, probably due to the accumulation of calcium in the cellular membranes.
Ageing refers to the degenerative changes in the body of the animal after it has attained full growth and adulthood.
Symptoms:
(1) Heart: Compared to a thirty-year-old person, the heart of a 70-year-old man pumps only 65% of blood per minute. Consequently, the blood going to the brain and kidneys is reduced to 80% and 42% respectively.
(2) Mitochondria: It gets generated in the cells of old tissues reducing the rate of respiration and carbohydrates metabolism.
(3) Plasma membrane: The permeability of plasma membrane gradually decreases with the advancing age, probably due to the accumulation of calcium in the cellular membranes.
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