Both intrinsic and extrinsic risk factors contribute to an older person's vulnerability to falls. which would be considered an intrinsic risk factor?

I would say that an intrinsic risk factor would be like poor balance which can happen as a person ages, plus loss of muscle tone and these two things together, coupled with an extrinsic factor like outside uneven ground can contribute to a fall and perhaps broken bones as bones can get more brittle with age too.