Nervous System and Aging Flashcards Preview

Semester 3 FS Exam 4 > Nervous System and Aging > Flashcards

Flashcards in Nervous System and Aging Deck (17):
1

Certain parts of the brain shrink especially the

prefrontal and hippocampus

2

Changes in the Eyes

Dec tissue mass
Inc CT and fat
Dec blood supply
Inc opacity (cataract)

3

Implications of dec blood supply (vision/eyes)

Retinal atrophy - common cause is diabetes

4

Implications of inc opacity (vision/eyes)

Cataract
Inc threshold to light
Need 3X more light to see things as younger people would to see in normal light

5

Age changes in vision

Dec visual field
Dec elasticity of lens
Inc sclerosis of ciliary muscle
Inc corneal degeneration
Inc dropping of eyelids
Dec tear production

6

Age changes in vision - dec elasticity of the lens - implications

Presbyopia
Harder to focus on objects that are near - usually starts around 40

7

Implications of dec tear production

Leads to irritation and infection

8

Hearing changes

Sclerotic changes in tympanic membrane (high freq hard to hear)
Dec discrimination
Deg of auditory nerve

9

Communication problems with changes in hearing

Might misunderstand the health care provider
Failure to hear them
Failure of them to ask questions

10

Social problems with changes in hearing

Withdrawal
Isolation
Impaired language understanding
Confusion
Paranoia
Rigidity in thought process

11

Age changes in taste (mouth)

80% of taste buds atrophy
Dec saliva
Dec amylase

12

Consequences of changes in taste

Dry mouth
Loss of some tastes
Speech difficulty
Swallowing difficulty
Dental deterioration
Dec appetite and engorement with food

13

Age changes in smell

Dec # of olfactory cells
Atrophy of olfactory bulbs (75% by 75-90)

14

Consequences of smell changes

Dec smell - stronger stimulus required
Impaired safety

15

Age changes - touch

Dec # of receptors and nerve fibers
Dec sensitivity
THinning, dec elasticity and vascularity of skin

16

Consequences of tough age changes

Net loss of touch sensations
Pain then heat and then tough
Sharp and then dull

17

Ages dec sense can lead to issues with

Dermatitis
Cuts, burns
Infection
Extremes of hot and cold