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2ND SEM PHYSIO > [RECALLS] Batch 2022 - Environmental Physiology and Aging Physiology > Flashcards

[RECALLS] Batch 2022 - Environmental Physiology and Aging Physiology Flashcards

1
Q

Hallmark of aging

A

Slowing of central processing

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2
Q

Immediate exposure to low O2 stimulates
_________ chemoreceptors _______
vasodilation

A

Peripheral

Increase

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3
Q

Independent aging

A

Taking medication

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4
Q

Not related to age specific disease

A

Hypercholesterolemia

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5
Q

Elderly can cook for herself

A

Independent activities of daily living

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6
Q

What is the main problem in aviation

physiology

A

Low oxygen in high altitude

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7
Q

Type of decompression sickness that

affects the Nervous System

A

Type 2 DCS

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8
Q

During the next few days in altitude,
acclimatization occurs. There are
mechanisms to cause slow increase in
ventilation, which is not correct?

A

Spillage of HCO3- into urine that leads to
osmotic diuresis and production of acidic
urine

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9
Q

A scuba diver ascends rapidly from 20 ft
depth. 15 mins on her only dive of the day.
Hazards include:

A

Air embolism

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10
Q

First warning symptom for transient

reduction of cerebral blood flow of pilot

A

Color perception

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11
Q

Density of air in 66ft deep than density at

sea level

A

Three times

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12
Q

What causes hearing loss in elderly

A

Loss of hair cells of organ or Corti

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13
Q

Changes in muscle during aging

A

Loss of muscle cell/decrease in number

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14
Q

Prevent over inflation

A

Boyle’s law

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15
Q

Possible complication with breath holding on ascending

A

Pulmonary barotrauma

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16
Q

Occurs during ascending to high altitude,

EXCEPT

A

pH will fall

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17
Q

Cardiovascular changes in aging, EXCEPT

A

Increase preload

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18
Q

Hormones during aging, EXCEPT

A

Decrease in parathyroid hormone

19
Q

Observable changes in vision during aging

A

Reduced number of retinal cones

20
Q

Factors of pro aging, EXCEPT

A

Decrease repair

21
Q

Seen in aging

A

Decrease gastric acid secretion

22
Q

Elderly cause of malnourishment

A

Malabsorption

23
Q

Deliver air in ambient pressure

A

Demand valve regulator

24
Q

Chronic O2 poison can cause pulmonary
disability. After only 12hrs at 1atm can
cause the following, EXCEPT:

A

Pulmonary consolidation

25
Q

State of near zero G Force

A

Weightlessness and microgravity

26
Q

All forms of Barotrauma, EXCEPT

27
Q

Alveolar PO2 at high altitudes, EXCEPT

A

Water vapor pressure increase in high altitude

28
Q

Major determinant of risk of DCS

A

Depth, time at depth, ascent rate, multiple dives (AOTA)

29
Q

First physiologic change in high altitude

A

Increase in heart rate

30
Q

Effects of weightlessness, EXCEPT

A

Motion sickness after 5 days

31
Q

All are reasons for Helium to be good

replacement, EXCEPT

A

Helium is denser than N2

32
Q

Decrease in height of elderly is caused by

A

Compression of cartilaginous disks between the vertebrae

33
Q

Decreases in aging:

a. Insulin
b. Parathyroid hormone
c. Thyroid hormone
d. None of the above (ANS.)

A

d. None of the above (ANS.)

34
Q 
A climber attempts an assault on high
mountain in Mt. Apo and reaches an
altitude of 5000km (16000 ft) below sea
level. What will happen to arterial PCO2
and Ph
A

pH will increase, PCO2 will decrease

35
Q

How many liters of Nitrogen in the body at

sea level

36
Q

Impaired glucose resistance in elderly

A

Increase insulin resistance

37
Q

Bubbles that block vital organs

A

Arterial gas embolism

38
Q

What happens to PN2 when diving

A

Increase Pb
Increase inspired N2
More N2 dissolved in blood

39
Q

Not involved in acclimatization:

A

RER oxidative enzymes

40
Q

Decreased in elderly, EXCEPT

41
Q

Major problem in high altitude

A

Low O2 in high altitude

42
Q

Major determinants of decompression

sickness

43
Q

Which is true in elderly?

A

Decrease in gastric secretion

2ND SEM PHYSIO (27 decks)

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