Summary
Declining stem cell function, accumulating damage and reduced repair gradually lower organ capacity.
In depth
Changes include loss of muscle mass (sarcopenia), reduced bone density, stiff arteries, reduced kidney function and slower reflexes. Mechanisms: telomere shortening, mitochondrial damage, senescent cells and accumulated protein damage.
Ageing affects every system gradually. Lifestyle modifies trajectory. Frailty is a decline in reserve.
Key idea: ageing is the accumulation of damage and reduced repair.
Frequently asked questions
What is Ageing Physiology?
Declining stem cell function, accumulating damage and reduced repair gradually lower organ capacity.
Which area of biology covers Ageing Physiology, and how advanced is it?
Ageing Physiology is one of the 51 topics in Human Physiology. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Cardiovascular Disease Mechanisms, Sleep Physiology, Diabetes Mellitus.
Can you give an example of Ageing Physiology?
Exercise slows many age-related declines.
What should I learn before Ageing Physiology?
Work through the Beginner topics in Human Physiology first, such as Homeostasis, Tissues and Organs, Skeletal System, then return to Ageing Physiology. Advanced topics assume the Intermediate vocabulary.
What topics are related to Ageing Physiology?
The closest topics to Ageing Physiology are Cardiovascular Disease Mechanisms, Sleep Physiology, Diabetes Mellitus, Exercise Adaptations. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Ageing Physiology?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Ageing Physiology. To practise the whole of Human Physiology, use the Human Physiology quiz.
How is Ageing Physiology different from Cardiovascular Disease Mechanisms?
Ageing Physiology: Declining stem cell function, accumulating damage and reduced repair gradually lower organ capacity. Cardiovascular Disease Mechanisms: Atherosclerosis builds plaques from cholesterol and inflammation, narrowing arteries and risking clots. Read both side by side and note what each one explains.
How should I study Ageing Physiology step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Cardiovascular Disease Mechanisms and explain the difference aloud. Finally, take the Human Physiology quiz and come back to this page for any question you miss.