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katse101 > Biological Changes > Flashcards

Biological Changes Flashcards

1
Q

What happens to brain neurons as we age?

A

0-50% decrease

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2
Q

What happens to glomeruli as we age?

A

50% decrease

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3
Q

What happens to liver weight as we age?

A

20% decrease

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4
Q

What happens to coronary blood flow as we age?

A

30% decrease

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5
Q

What happens to vital capacity as we age?

A

40% decrease

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6
Q

What happens to max breathing capacity as we age?

A

80% decrease

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7
Q

What happens to GFR as we age?

A

Decrease 50%

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8
Q

What happens to muscle strength as we age?

A

Decreases 20%

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9
Q

What is the average height loss between ages 20-80?

A

1-4 inches

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10
Q

What happens to the arch of the foot as we age?

A

Flattens

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11
Q

What happens to the spinal curvature as we age?

A

Increased

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12
Q

What must be done to Ca level supplementation after menopause?

A

Double

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13
Q

What are the skin changes seen with aging?

A

Thinning of the epidermis
Loss of elasticity
Loss of subcutaneous adipose

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14
Q

What is xerosis?

A

Dry skin

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15
Q

What are the eye changes in geriatric patients?

A

Decrease tears
Ectropion
Iris fades

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16
Q

Why are greens and blues bad with aging?

A

Cones degenerate

17
Q

Presbycusis affects which sex more?

A

Males

18
Q

By what age do most adults have trouble hearing above 4000 Hz?

A

60

19
Q

What is the range of normal speech (hz)?

A

500-2000

20
Q

By age 70, CO is reduced by what?

A

up to 70%

21
Q

Why does the heart muscle get more irritable as we age?

A

Hypoxia

22
Q

What vitamin in particular do we have problems absorbing as we age?

A

B12

23
Q

What happens to the bone marrow as we age?

A

fatty deposition

24
Q

What happens to cerebral blood flow by age 70?

A

up to 20% decrease

25
Q

Decreases in dopamine = ?

A

Parkinsonism

26
Q

Decreases in Ach = ?

A

Dementias

27
Q

What are the three leading causes of death in geriatric patients?

A
  1. Heart
  2. CA
  3. Lower lung infx

katse101 (27 decks)

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