CNA CHAPTER 4 EXAM Q&A 2026 STUDY
GUIDE WITH VERIFIED SOLUTIONS
◉ Sense organs (eyes, ears, nose). Answer: Receive information for
the world & then relay the impulse to the nerves on how to act
◉ Sense organs normal changes of aging. Answer: Vision decrease,
eye moisture decreases, hearing decreases, sense of taste decreases,
sense of smell & touch decreases
◉ Report these changes (sense organs). Answer: Changes in vision
or hearing, signs of infection with eyes, ears, nose or fingers/toes,
pain with eyes or ears
◉ Cataracts. Answer: Lens becomes cloudy & scar
◉ Glaucoma. Answer: Caused by increase pressure in the eye - can
be instant/gradual
◉ Macular degeneration. Answer: Vision has wavy lines that will
appear in the center
, ◉ Circulatory system. Answer: Made up of the blood, blood vessels &
the heart
**The circulatory system supplies food, oxygen & hormones
◉ Circulatory system normal changes of aging. Answer: The heart
pumps less efficiently, blood flow decreases, blood vessels narrow,
decrease in heart electrical activity, decrease in muscle tone,
decrease in blood vessels elastic/blood vessels & heart become
more rigid
◉ Report these changes (circulatory system). Answer: Change in
pulse, *chest pain, edema, severe headache, weight gain, pale or
bluish hands, feet or lips
◉ Edema. Answer: Swelling from fluid overload to the ankles, feet
fingers & hands
◉ Hypertension. Answer: Happens when the blood works hard to
move through the heart (high blood pressure)
◉ Coronary artery disease. Answer: When blood vessel become
narrow due to fatty deposits, which does not allow enough oxygen to
the heart
◉ Angina Pectoris. Answer: Chest pain or pressure
GUIDE WITH VERIFIED SOLUTIONS
◉ Sense organs (eyes, ears, nose). Answer: Receive information for
the world & then relay the impulse to the nerves on how to act
◉ Sense organs normal changes of aging. Answer: Vision decrease,
eye moisture decreases, hearing decreases, sense of taste decreases,
sense of smell & touch decreases
◉ Report these changes (sense organs). Answer: Changes in vision
or hearing, signs of infection with eyes, ears, nose or fingers/toes,
pain with eyes or ears
◉ Cataracts. Answer: Lens becomes cloudy & scar
◉ Glaucoma. Answer: Caused by increase pressure in the eye - can
be instant/gradual
◉ Macular degeneration. Answer: Vision has wavy lines that will
appear in the center
, ◉ Circulatory system. Answer: Made up of the blood, blood vessels &
the heart
**The circulatory system supplies food, oxygen & hormones
◉ Circulatory system normal changes of aging. Answer: The heart
pumps less efficiently, blood flow decreases, blood vessels narrow,
decrease in heart electrical activity, decrease in muscle tone,
decrease in blood vessels elastic/blood vessels & heart become
more rigid
◉ Report these changes (circulatory system). Answer: Change in
pulse, *chest pain, edema, severe headache, weight gain, pale or
bluish hands, feet or lips
◉ Edema. Answer: Swelling from fluid overload to the ankles, feet
fingers & hands
◉ Hypertension. Answer: Happens when the blood works hard to
move through the heart (high blood pressure)
◉ Coronary artery disease. Answer: When blood vessel become
narrow due to fatty deposits, which does not allow enough oxygen to
the heart
◉ Angina Pectoris. Answer: Chest pain or pressure
