Osteoarthritis is the repeated use of a joint which gradually wears down
the articular cartilage.
<h3>What is a Cartilage?</h3>
These are soft connective tissues which are found between bones which
helps to ensure flexibility and reduce friction.
In most old people, these cartilages being to wear out thereby increasing
the friction between the bone joints. This leads to osteoarthritis which is
characterized by joint pain.
Read more about Osteoarthritis here brainly.com/question/10697062
A term named for a person or a place, such as alzheimer disease named for the physician who first described the symptoms as seen in a patient, is referred to as Eponym.
<h3>What is Eponym?</h3>
This is referred to as a place or a thing which is believed to be named after something and in this case, it is referred to as what we call Alzheimer which is common with older people.
Alois Alzheimer is referred to as a German neuropathologist who identified the first published case of presenile dementia in 1906 through the various symptoms he observed in the patient.
This was the reason why when this condition was fully confirmed by others later on it was named after him and is being referred to as Alzheimer disease today.
This is therefore the reason why Eponym was chosen as the most appropriate choice.
Read more about Alzheimer here brainly.com/question/27414232
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The easiest would be the circulatory system. BUT, i would suggest the nervous system! It is so interesting, with so many sub-systems existing within it. It’s on the more complex side tho
