[RECALLS] Batch 2022 - Environmental Physiology and Aging Physiology

Question 1

Hallmark of aging

Answer 1

Slowing of central processing

Question 2

Immediate exposure to low O2 stimulates
_________ chemoreceptors _______
vasodilation

Answer 2

Peripheral

Increase

Question 3

Independent aging

Answer 3

Taking medication

Question 4

Not related to age specific disease

Answer 4

Hypercholesterolemia

Question 5

Elderly can cook for herself

Answer 5

Independent activities of daily living

Question 6

What is the main problem in aviation

physiology

Answer 6

Low oxygen in high altitude

Question 7

Type of decompression sickness that

affects the Nervous System

Answer 7

Type 2 DCS

Question 8

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

Answer 8

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

Question 9

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

Answer 9

Air embolism

Question 10

First warning symptom for transient

reduction of cerebral blood flow of pilot

Answer 10

Color perception

Question 11

Density of air in 66ft deep than density at

sea level

Answer 11

Three times

Question 12

What causes hearing loss in elderly

Answer 12

Loss of hair cells of organ or Corti

Question 13

Changes in muscle during aging

Answer 13

Loss of muscle cell/decrease in number

Question 14

Prevent over inflation

Answer 14

Boyle’s law

Question 15

Possible complication with breath holding on ascending

Answer 15

Pulmonary barotrauma

Question 16

Occurs during ascending to high altitude,

EXCEPT

Answer 16

pH will fall

Question 17

Cardiovascular changes in aging, EXCEPT

Answer 17

Increase preload

Question 18

Hormones during aging, EXCEPT

Answer 18

Decrease in parathyroid hormone

Question 19

Observable changes in vision during aging

Answer 19

Reduced number of retinal cones

Question 20

Factors of pro aging, EXCEPT

Answer 20

Decrease repair

Question 21

Seen in aging

Answer 21

Decrease gastric acid secretion

Question 22

Elderly cause of malnourishment

Answer 22

Malabsorption

Question 23

Deliver air in ambient pressure

Answer 23

Demand valve regulator

Question 24

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

Answer 24

Pulmonary consolidation

Question 25

State of near zero G Force

Answer 25

Weightlessness and microgravity

Question 26

All forms of Barotrauma, EXCEPT

Answer 26

Bends

Question 27

Alveolar PO2 at high altitudes, EXCEPT

Answer 27

Water vapor pressure increase in high altitude

Question 28

Major determinant of risk of DCS

Answer 28

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

Question 29

First physiologic change in high altitude

Answer 29

Increase in heart rate

Question 30

Effects of weightlessness, EXCEPT

Answer 30

Motion sickness after 5 days

Question 31

All are reasons for Helium to be good | replacement, EXCEPT

Answer 31

Helium is denser than N2

Question 32

Decrease in height of elderly is caused by

Answer 32

Compression of cartilaginous disks between the vertebrae

Question 33

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

Answer 33

d. None of the above (ANS.)

Question 34

``` 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 ```

Answer 34

pH will increase, PCO2 will decrease

Question 35

How many liters of Nitrogen in the body at | sea level

Answer 35

1 L

Question 36

Impaired glucose resistance in elderly

Answer 36

Increase insulin resistance

Question 37

Bubbles that block vital organs

Answer 37

Arterial gas embolism

Question 38

What happens to PN2 when diving

Answer 38

Increase Pb Increase inspired N2 More N2 dissolved in blood

Question 39

Not involved in acclimatization:

Answer 39

RER oxidative enzymes

Question 40

Decreased in elderly, EXCEPT

Answer 40

All

Question 41

Major problem in high altitude

Answer 41

Low O2 in high altitude

Question 42

Major determinants of decompression | sickness

Answer 42

AOTA

Question 43

Which is true in elderly?

Answer 43

Decrease in gastric secretion