16 - b Some activities may be limited because this system is less elastic
in old age.
17 - c The older person must be protected from falls because this system is more brittle with
old age.
18 - e The older person should eat a diet high in fiber because this system is slowed down.
19 - d The older person can't take in as much air as before because this system is weaker.
20 - a Older people need to be protected from infection because this system does not work as well as it did.
Cardiovascular system: Due to this system's decreased elasticity with age, some activities may need to be restricted.
Older people need to be safeguarded from falls since their skeletal system (the bones) is more fragile.
The digestive tract is slowed down in elderly people, thus they should have a diet rich in fiber.
The elderly person's respiratory system is weaker, making it harder for them to breathe in as much air as they formerly could.
Immune system - Older adults require infection protection since their immune systems do not function as well as they once did.
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