Physiology part 2 Flashcards

1
Q
A divers body looses heat to the surrounding water due to
(Mark the correct answers)
a. Convection
b. Radiation
c. Conduction
d. Emission
A

C

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2
Q
- What is the most effecting treatment for carbon monoxide
poisoning?
a. Hyperbaric oxygen
b. A warm drink
c. Exercise
A

A

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3
Q
Which areas of your body are most likely to be affected by
blasts and sonar transmissions?
a. Internal organs and air 
b. spaces
c. Solid organs
d. Joints
A

A

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4
Q

What is the tidal lung volume of the average male?

a. 1500 ml
b. 6000 ml
c. 500 ml
d. 5000 ml

A

C

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5
Q

A diver is pulled to surface by a lift bag after a short dive to 12meters, and is having breathing difficulties with a slight pain in his chest and is
having difficulties swallowing. What would you suspect is wrong with him?
a. A serious DCI
b. A Pneumothorax
c. Hypercapnea
d. Chronic oxygen toxicity

A

B

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6
Q

How would you describe a condition known as the “Chokes”?

a. Any unusual behavior may be a symptom of cerebral DCI
b. Bubble formation in the inner ear, symptoms are loss of balance, nausea and vertigo
c. The diver is unable to breathe properly because large numbers of bubbles have formed
in the pulmonary circulation
d. Numbness or tingling in the extremities, pain around the waist, loss of bladder or bower control, a feeling of weakness in the legs or paralysis

A

C

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7
Q

What is the cause of Chronic oxygen poisoning?

a. Exposure to a PP02 below 160 mb
b. Exposure to breathing a mix with a PP02 below 600 mb
c. Long exposure of a PP02 above 0.6 bar
d. Short exposure to a PP02 above 1 .6 bar

A

C

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8
Q

What are the restrictions to long haul flights after doing SURD02 diving?

a. 24 hours
b. 48 hours
c. 8 hours
d. 12 hours

A

A

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9
Q
  • What is the safe operating distance when working in areas that have ultrasonic sonar transmissions?
    a. 5 meters
    b. 1 meters
    c. 10 meter
    d. 8 meters
A

c

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10
Q

Which of the following is a symptom of a serious DCl? More than I correct answer)

a. Slurred speech
b. Pins and needles
c. Loss of feeling

A

ABC

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11
Q

Which treatment table should be used for a pain only DCl?
a. The diving supervisor is obligated to use treatment table provided by the Company, in
conjunction with radio medical advice received from the company’s designated medical
officer. (USN treatment table 6 is commonly used).
b. USN treatment table 5 is commonly used
c. USN treatment table 6 is commonly used
d. Comex therapeutic table 30 - CX30. 30msw with heliox 50ÿ50

A

A

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12
Q

A reversed ear on ascent is usually caused by? (more than 1 correct answer)

a. A tight fitting wet suit hood
b. Slow controlled ascents
c. A blocked wax plug in the outer ear
d. A blocked Eustachian tube

A

AC

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13
Q

Which document would provide us with a list of medical equipment required on a diving site?

a. D015
b. DMAC 22
c. IMCA 015
d. DMAC15

A

D

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14
Q

What is the term used for gas escaping through the tissue
layers into the space between the lungs or below the skin under the arms or at the base of the neck?

a. Interstitial emphysema or subcutaneous emphysema
b. Serious DCI
c. Arterial gas embolism
d. Skin bend

A

A

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15
Q

At what body temperature do we consider hypothermia to occur?

a. 36.7 ‘C
b. 37 ‘C
c. 35 ‘C
d. 33 ‘C

A

C

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16
Q

When should a diver with water jet injuries be sent for medical
care?
a. When infection sets in
b. Immediately after the incident
c. Only if it is bleeding profusely
d. only if there is an identifiable exit wound

A

B

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17
Q

A diver has just completed an in water deco dive, for how long
should he remain within 20 minutes proximity to the DDC?

a. 48 hours
b. 4 hours
c. 24 hours
d. 12 hours

A

B

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18
Q

What is the vital lung capacity of the average male?

a. 6000 ml
b. 1500 ml
c. 5000 ml
d. 500 ml

A

C

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19
Q

Which part of the body is referred to as the superior?

a. Upper part of body
b. Back of body
c. Lower part of body
d. Front of body

A

A

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20
Q

At what PP02 can we expect Acute oxygen toxicity to set in?

a. 1.6 bar
b. 1 .6 mb
c. 16 bar
d. 0.16 bar

A

A

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21
Q

At what PP02 is hypoxia considered to occur?

a. 1400 mb
b. 1 .6 bar
c. 210 mb
d. 160 mb

A

D

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22
Q

A diver is showing residual symptoms after his second table 6 treatment, when can he fly home to see the doctor?

a. Only after consulting with a diving medical specialist
b. only after completing a third treatment
c. There is no restriction if a second treatment is completed
d. After 48 hours

A

A

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23
Q

Haemoglobin prefers carbon monoxide times more than
it prefers oxygen?

a. 700
b. 2
c. 5
d. 200

A

D

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24
Q

Which part of the body is referred to as the anterior?

a. Upper part of body
b. Back of body
c. Lower part of body
d. Front of body

A

D

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25
Q

What is the recommended method to warm a hypothermic
patient?

a. As gradually as possible

b. Submerge patient in ice cold water to allow blood to return to vital organs to be
rewarmed

c. Submerge patient in hot water for a minimum of 60 minutes duration
d. As rapidly as tolerable to allow a quick recovery

A

A

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26
Q

After a dive the diver is complaining of a roaring in the ears, and is feeling nauseous. You notice as well that he is having trouble keeping
balance. What would you suspect is wrong with him?

a. He is just cold and hungry
b. He is suffering from a serious Pneumothorax
c. He has just got water in his ears form his shower after the dive
d. He has a vestibular (inner ear) DCI, known as “Staggers”

A

D

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27
Q

At what body temperature do we consider hyperthermia to
occur?

a. 39 ‘c
b. 35 ‘C
c. 37 ‘C
d. 33 ‘C

A

A

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28
Q

Which of the following sends deoxygenated blood from the
heart to the lungs?

a. Superior vena-cava
b. Pulmonary vein
c. Inferior vena-cava
d. Pulmonary artery

A

D

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29
Q

What would be your immediate action to someone with a
suspected arterial gas embolism?

a. Keep him warm in the recovery position and monitor for convulsions
b. Place him on light duties and monitor him for other symptoms
c. Immediately recompress
d. Have him choppered off to the nearest medical facility?

A

C

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30
Q

What causes carbon dioxide to accumulate in the lungs and
raises carbonic acid levels in the blood?

a. Breathing of 100 % oxygen
b. Breathing Nitrox deeper than 20 msw
c. Repeated deep breaths
d. Rapid shallow breathing

A

D

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31
Q

Which of the following returns deoxygenated blood to the
heart?

a. Arteries
b. Capillaries
c. Aorta
d. Veins

A

D

32
Q

Define barotrauma.

a. A pressure injury caused by items such as HP water jet and hydratight jacks
b. Mild injuries cause by marine animals
c. Injuries caused by a contaminated gas

d. A pressure injury caused by pressure differences between the various cavities in the
diver’s body and the environment

A

D

33
Q

During a table 6 treatment the dive suddenly starts
convulsing, what could he be suffering from?

a. Chronic oxygen toxicity
b. Hypercapnea
c. Hypoxia
d. Acute oxygen toxicity

A

D

34
Q

During a strenuous dive the diver reports that he has a
headache and is sweating profusely. The supervisor notices he has an increased
respiration rate and is becoming apprehensive. What would you suspect is the
problem?

a. HPNS
b. Hypercapnia
c. DCI
d. Acute oxygen toxicity

A

B

35
Q

Define Anoxia …

a. Anoxia is a complete lack of oxygen
b. Anoxia develops when the PP02 is above 1 .2 bar
c. Anoxia is a low PP02
d. Anoxia sets in when the PP02 drops below 1 .6 bar

A

A

36
Q

What are the signs and symptoms of Chronic oxygen
poisoning? (more than 1 correct answer)

a. Convulsions
b. Mild tickling or irritation in the lungs
c. Slight cough progressing to a burning sensation in the lungs

A

BC

37
Q

What separates the outer ear from the middle ear?

a. The ear lobe
b. The Eustachian tube
c. The ossicles
d. The eardrum

A

D

38
Q

According to Henrys law, if a body contains 1 litre of nitrogen
at surface, how many liters would it contain at 30 msw when saturated?

a. 4 litres
b. 3 litres
c. 5 litres
d. 6 litres

A

A

39
Q

How can a diver relieve/lessen the effects of nitrogen
narcosis? (more than 1 correct answer)

a. Use nitrox rather than air
b. Reduce depth
c. Ascend rapidly
d. Do a series of build up dives

A

ABD

40
Q

After a week of doing a 60 minute dive per day to 9m, a diver
approaches you complaining of an ache and occasional sharp pain in his right
shoulder. He reports that he only really notices it after his gym workouts,
but in the mornings it is it is not to bad. He thinks he has picked up a bend and
should be put on a treatment table. What do you suspect the problem is and what
action should you take?

a. A joint or muscular injury not associated with a DCI. Place him on a treatment table 6
anyway

b. Pain only DCI. Place him immediately on a treatment table5
c. Probably a pain only DCI, but monitor him over the next 7 days before doing a treatment

d. A joint or muscular injury not associated with a DCI. Tell him to not gym for the next
couple of days and see the ships medic for pain killers and anti-inflammatory medication

A

D

41
Q

Headache, dizziness, breathlessness and in extreme cases cherry red lips are symptoms of which gas toxicity?

a. Carbon monoxide toxicity
b. CNS oxygen toxicity
c. Pulmonary oxygen toxicity
d. Carbon dioxide toxicity

A

A

42
Q

How long does it take for nitrogen to totally desaturate from the body?

a. 12 hours
b. 24 hours
c. 72 hours
d. 48 hours

A

A

43
Q

During a therapeutic recompression table the diver complains
of chest pain when ascending to the surface. What should you do?

a. Immediately stop the ascent and lock in the DMT
b. Lock in the DMT and bring them both up slowly on oxygen BIBS
c. Bring the diver slowly back to the surface and informed the company medical advisor

A

A

44
Q

What are the ways of heat transfer?
(Mark the correct answers)

a. Radiation
b. Emission
c. Convection
d. Conduction

A

ACD

45
Q

During ascent from treatment using a therapeutic treatment
table, the injured diver complains of worsening chest pain. What is your first
concern?

a. Barodontalgia
b. Pneumothorax
c. Serious Decompression Illness (DCI)

A

B

46
Q

What is the vital lung capacity of the average male?

a. 1500 ml
b. 5000 ml
c. 500 ml
d. 6000 ml

A

B

47
Q

What is the most effecting treatment for carbon monoxide
poisoning?

a. A warm drink
b. Exercise
c. Hyperbaric oxygen

A

C

48
Q

When selecting an appropriate mix for nitrox diving
operations, the partial pressure of oxygen should never exceed what limit?

a. 1 .5 bar
b. 1 .4 bar
c. 1 .2 bar
d. 2.8 bar

A

B

49
Q

During descent a diver complains of pain in his tooth and feels
that he can not go any deeper. What do you think is the problem?

a. The diver has barodontalgia, a tooth barotrauma. The dive should be aborted and the
diver must see a dentist.

b. The diver has tooth ache and should continue with the dive and seek medical advice
when is is off rotation.

c. The divers nose block is pressing to hard against his mouth and he should adjust it and
continue with the dive.

d. The diver has a sinus squeeze and should abort the dive.

A

A

50
Q

A diver surface rapidly from 6msw collapses and starts to
convulse. What would you suspect?

a. Arterial gas embolism
b. Serious decompression illness
c. Oxygen toxicity
d. Pneumathorax

A

A

51
Q

The standby diver working in the tropics begins appears to be agitated and looks hot and flushed in the face. What could be the problem?

a. Hypertension (High blood pressure)
b. Hyperthermia (too hot)
c. Hyperglycemia (too much sugar in the blood)
d. Hypothermia (too cold)

A

B

52
Q

What are the restrictions to long haul flights after doing SURD 02 diving?

a. 48 hours
b. 12 hours
c. 8 hours
d. 24 hours

A

D

53
Q

A divers is struck on the helmet by a falling object and
complains of numbness and tingling in his extremities. What should you do?

a. Abort the dive and tell the diver to return to the surface. After surfacing ask the diver to
report to the DMT or ships medic.

b. Jump the standby diver and return the injured diver to the surface whilst, as best
possible, protecting the head and neck from moving. On surfacing float a spine board to
remove the diver from the water. Remove that helmet carefully and carry out a
neurological survey. Contact the company medical advisor.

c. Jump the standby diver and return the injured diver to the surface and commence a
treatment table for serious DCI. Contact the company medical advisor.

A

B

54
Q

Which areas of your body are most likely to be affected by
blasts and sonar transmissions?

a. Internal organs and air spaces
b. Joints
c. Solid organs

A

A

55
Q

The total lung capacity (TLC) of an average adult male is?

a. 5.0L
b. 0.5L
c. 6.0 L
d. 1.5 L

A

C

56
Q

During SurD02 operations the oxygen levels rise in the
chamber. Which are valid reasons for the rise in levels?

a. Poor fitting BIBS, rise in temperature and a closed overboard dump
b. Leaky fittings, poor fitting BIBS, no overboard dump
c. Diver has a beard, increase chamber temperature and increased chamber depth

A

B

57
Q

During a table 6 treatment the dive suddenly starts
convulsing, what could he be suffering from?

a. Chronic oxygen toxicity
b. Hypoxia
c. Acute oxygen toxicity
d. Hypercapnea

A

C

58
Q

Divers have been working with contaminated drill mud and
cuttings. They begin to complain of red rashes on their hands and neck. What
should you do?

a. Infected wounds
b. Chemical burns
c. Allergic rash

A

B

59
Q

After a week of doing a 60 minute dive per day to 9m, a diver
approaches you complaining of an ache and occasional sharp pain in his right
shoulder. He reports that he only really notices it after his gym workouts,
but in the mornings it is not to bad. He thinks he has picked up a bend and
should be put on a treatment table. What do you suspect the problem is and what
action should you take?

a. Pain only DCI. Place him immediately on a treatment table 5

b. A joint or muscular injury not associated with a DCI. Tell him to not gym for the next
couple of days and see the ships medic for pain killers and anti-inflammatory medication

c. Probably a pain only DCI, but monitor him over the next 7 days before doing a treatment

d. A joint or muscular injury not associated with a DCI. Place him on a treatment table 6
anyway

A

B

60
Q

During ascent from a 30m dive, a diver experiences a pressure
sensation and his eyes begin to hurt what could be the problem?

a. Pyo infection
b. Sinus barotrauma
c. Eye barotrauma

A

B

61
Q

What is the term used for gas escaping through the tissue
layers into the space between the lungs or below the skin under the arms or at the
base of the neck?

a. Arterial gas embolism
b. Interstitial emphysema or subcutaneous emphysema
c. Serious DCI
d. Skin bend

A

B

62
Q

When conducting and incident investigation it is important to?

a. Find who is to blame for the incident and ensure corrective action and discipline
b. Find the key lessons learned in order to prevent recurrence.
c. Ensure your findings clearly indicate that you and your divers did your job properly

A

B

63
Q

The amount of air inhaled during a normal breath known as
the tidal volume (TV) in the average adult male is?

a. 0.5L
b. 5.0L
c. 6.0L
d. 4.5L

A

A

64
Q

How would you manage your diver if they are is stung by a lion
fish whilst working in tropical waters?

a. Rinse the wound with vinegar

b. Contact the medical officer, remove any spines and soak wound (30 - 90 minutes) in
heated, non-scalding, water as soon as possible.

c. Remove any obvious spine(s) protruding from the wound, immerse in hot water and then
ice cold water.

A

B

65
Q

When should a diver with water jet injuries be sent for medical
care?

a. only if there is an identifiably exit wound
b. When infection sets in
c. Immediately after the incident
d. Only if it is bleeding profusely

A

C

66
Q

The vital capacity (VC) of the lung for the average adult male is?

a. 6.0L
b. 3.0L
c. 5.0L
d. 0.5L

A

C

67
Q

Which part of the body is referred to as the anterior?

a. Front of body
b. Upper part of body
c. Lower part of body
d. Back of body

A

A

68
Q

Headache, dizziness and increased breathing rate, lack of co-ordination and increased perspiration (sweating)and nausea are all symptoms of ?

a. Carbon monoxide toxicity
b. Pulmonary Oxygen Toxicity
c. Hypercapnia (Carbon dioxide toxicity)
d. CNS Oxygen Toxicity

A

C

69
Q

A divers helmet floods at 10 msw and he comes to the surface
coughing, holding his chest and looking quite blue in the face. He is reluctant to
talk to you and appears to be short of breath. What should you do?

a. Administer oxygen until he feels better then ask him what happened.
b. Immediately recompress to 18m on oxygen.

c. Administer oxygen and place him under the supervision of the DMT and call for medical
advice.

A

C

70
Q

What are the signs and symptoms of Chronic oxygen
poisoning? (more than 1 correct answer)

a. Mild tickling or irritation in the lungs
b. Slight cough progressing to a burning sensation in the lungs
c. Convulsions

A

AB

71
Q

2 divers are construction working at a maximum depth of 60ft with multiple ascents between 15ft and 55ft. After surfacing from 116 minutes of
dive time 1 diver complains of dizziness and nausea. What should be considered
first?

a. Seasickness
b. Serious DCI
c. Ear (Aural) barotrauma
d. Minor DCI

A

B

72
Q

Which are the signs of hypothermia?

a. Poor coordination and a feeling of well being.
b. Impaired judgement,erratic behaviour and feeling cold
c. Slowed responses, impaired judgement and difficulty completing manual tasks

A

C

73
Q

Intense ear pain on descent can be caused by the following
(More than 1 correct answer)?

a. reversed ear squeeze
b. ear drum squeeze
c. over tight hood

A

BC

74
Q

A diver working at 42m appears to have difficulty following your directions. What would you expect to be the problem?

a. CO poisoning
b. Nitrogen Narcosis
c. C02 poisoning

A

B

75
Q

A diver working in West Africa becomes lethargic with
aching muscles, a high fever and severe headaches. He believes he as the flu. What
should your concerns be?

a. A migrane
b. Malaria
c. A stroke

A

B

76
Q

A diver has just completed an in water deco dive, for how
long should he remain within 20 minutes proximity to the DDC?

a. 4 hours
b. 48 hours
c. 24 hours
d. 12 hours

A

A

77
Q

Thermal conductivity of seawater is ………. times more than air

a. 4 times
b. 10 times
c. 20 times
d. 25 times

A

d. 25 times