Decompression sickness can be prevented by .1 avoiding cabin altitudes above ? [ Preparation civilian ]

Question 123-1 : 1 2 and 4 are correct 1 2 and 3 are correct 2 and 3 are correct 4 is false only 3 is correct

exemple 223 1, 2 and 4 are correct. — .the most satisfactory way to prevent decompression sickness is to avoid exposure to altitudes at which it occurs it does not occur at altitudes below 18&8201 000 feet .breathing 100% oxygen will flush nitrogen from the tissues and the bloodstream this procedure is known as 'pre oxygenation' or 'denitrogenation' 1, 2 and 4 are correct.

Following a rapid decompression at 30000 feet the time of useful consciousness ?

Question 123-2 : Between 45 seconds and 1 minute 30 seconds 3 to 5 minutes 5 to 10 minutes 10 to 12 minutes

exemple 227 Between 45 seconds and 1 minute 30 seconds. — . /com en/com070 169 jpg. Between 45 seconds and 1 minute 30 seconds.

After a rapid decompression at 35 000 feet the time of useful consciousness is ?

Question 123-3 : 30 to 90 seconds 15 seconds or less 5 minutes 10 minutes

exemple 231 30 to 90 seconds. — Img /com en/com070 169 jpg. 30 to 90 seconds.

After scuba diving more than 30 feet of depth you have to wait a period of time ?

Question 123-4 : 24 hours 6 hours 12 hours 48 hours

exemple 235 24 hours. — .the recommended waiting time before going to flight altitudes of up to 8000 feet is at least 12&8201 h after diving which has not required controlled ascent nondecompression stop diving and at least 24 h after diving which has required controlled ascent decompression stop diving .the waiting time before going to flight altitudes above 8000 feet should be at least 24 h after any scuba dive .this takes into consideration the risk of decompression of the aircraft during flight 24 hours.

Flying immediately after scuba diving involves the risk of getting ?

Question 123-5 : Decompression sickness without having a decompression hyperventilation hypoxia stress

exemple 239 Decompression sickness without having a decompression. — Decompression sickness without having a decompression.

Which statement is correct .1 smokers have a greater chance of suffering from ?

Question 123-6 : 1 2 and 3 are correct 1 and 2 are correct 3 is false 1 and 3 are correct 2 is false 2 and 3 are correct 1 is false

.raising the physiological altitude means that the body will think that it is at a higher altitude so if the cabin altitude is 8000 ft the body may act as if it is at 10000 ft .this is due to the reduction in oxygen that the lungs can take in due to all the tar

Co carbon monoxide present in the smoke of cigarettes can lead to .1 reduction ?

Question 123-7 : 1 and 2 are both correct 1 is correct 2 is false 1 is false 2 is correct 1 and 2 are both false

exemple 247 1 and 2 are both correct. — 1 and 2 are both correct.

Carbon monoxide in the human body can lead to .1 loss of muscular power.2 ?

Question 123-8 : 1 2 3 and 5 are correct 1 2 and 4 are correct 2 and 3 are correct 1 is false 1 2 3 4 are correct

exemple 251 1, 2, 3 and 5 are correct. — 1, 2, 3 and 5 are correct.

Adverse effects of carbon monoxide increase as ?

Question 123-9 : Altitude increases altitude decreases air pressure increases relative humidity decreases

exemple 255 Altitude increases. — Altitude increases.

Disturbance of the biological clock is most likely to appear after a .1 bad ?

Question 123-10 : 2 and 4 are correct 1 2 and 3 are correct 1 and 3 are correct 1 2 3 and 4 are correct

exemple 259 2 and 4 are correct. — .sleep has a restorative function and is essential for mental performance sleep deprivation and disturbance can reduce alertness and attention but a bad night's sleep will not disturbate the biological clock .disturbance of the biological clock is most likely to appear after long distance transmeridian air travel such as amsterdam new york or new york amsterdam flights .amsterdam johannesburg has no significant time zone change .jet lag is the common term for disturbance or desynchronization of body rhythms 2 and 4 are correct.

The effects of sleep deprivation on performance .1 increase with altitude .2 ?

Question 123-11 : 1 and 3 are correct 1 2 and 3 are correct 1 3 and 4 are correct 2 3 and 4 are correct

exemple 263 1 and 3 are correct. — 1 and 3 are correct.

Sleeplessness or the disruption of sleeping patterns.1 can lead to symptoms of ?

Question 123-12 : 1 and 2 are both correct 1 is not correct 2 is correct 1 is correct 2 is not correct 1 and 2 are both not correct

exemple 267 1 and 2 are both correct. — 1 and 2 are both correct.

Which of the following statements is/are correct .1 a person experiencing sleep ?

Question 123-13 : 1 and 2 are both correct 1 is correct 2 is false 1 is false 2 is correct 1 and 2 are both false

exemple 271 1 and 2 are both correct. — .the biggest danger of sleep deprivation is that it's difficult to recognise the signs until it's too late like falling asleep when driving 1 and 2 are both correct.

The sleep cycles repeat during the course of a night's sleep .1 each ?

Question 123-14 : 1 and 2 are both correct 1 is correct 2 is false 1 is false 2 is correct 1 and 2 are both false

exemple 275 1 and 2 are both correct. — Admin .both statements are correct each succeeding cycle contains a greater amount of rem sleep and rem sleep is more important for the regeneration of mental functions than all the other sleep stages are frequent interruption of the rem sleep may be harmful rem sleep is involved in mental recuperation 1 and 2 are both correct.

If someone hyperventilates due to stress his/her blood will become ?

Question 123-15 : More alkaline less saturated with oxygen more saturated with carbon dioxide more acid

exemple 279 More alkaline. — More alkaline.

What can be said concerning the following two statements .1 euphoria can be a ?

Question 123-16 : 1 and 2 are both correct 1 is correct 2 is false 1 is false 2 is correct 1 and 2 are both false

exemple 283 1 and 2 are both correct. — 1 and 2 are both correct.

On experiencing a vestibular illusion in straight and level flight it is ?

Question 123-17 : You avoid head movements and rely on your instruments you tilt your head to the side opposite to the turn to nullify the stimulus causing the illusion you close your e for a moment so that the oculo vestibular conflict disappears you rely on your sensations only as humans are much more reliable than flight instruments

exemple 287 You avoid head movements and rely on your instruments. — You avoid head movements and rely on your instruments.

Among the symptoms of hypoglycaemia are ?

Question 123-18 : Headache and lack of concentration double vision and puffiness around the e severe eye and head aches difficulty in focussing on near by objects

exemple 291 Headache and lack of concentration. — Headache and lack of concentration.

To prevent gastro intestinal problems in tropical climates you should .1 not ?

Question 123-19 : 1 2 3 and 4 1 and 2 1 2 and 3 2 and 4

exemple 295 1, 2, 3 and 4. — .food and beverage hygiene act as a exposure prophylaxis against travel diarrhoea and other intestinal infections . only use fresh boiled tea coffee or originally bottled and sealed beverages. in the field use water filters iodine etc for water treatment. no ice into drinks no ice cream. no raw milk or dairy products. only well done or well boiled meat or fish. avoid raw fish and raw seafood. no raw salad only fruits that can be peeled by oneself or under ones own supervision. no dishes with cold dressings e g ketchup mayonnaise or products of raw eggs. no sandwiches with salad or mayonnaise. avoid dishes that have been kept warm for long periods of time the fresh and thorough preparation of food is essential . thorough hand and body hygiene. use mineral water for brushing teeth. avoid tableware and cutlery that may have cleaned in dirty water if applicable drinking from bottle or can . peel it boil it or forget it 1, 2, 3 and 4.

To resynchronize a circadian rhythm it takes more time after ?

Question 123-20 : Eastbound flights westbound flights north south flights south north flights

exemple 299 Eastbound flights. — Eastbound flights.

Caffeine may cause an increase in cardiac rate restlessness/nervousness ?

Question 123-21 : 250 mg/day 3 mg/day 40 65 mg/day 150 mg/day

Carbon monoxide poisoning can be treated by ?

Question 123-22 : Increasing the amount of oxygen being physically dissolved in the blood decreasing the amount of oxygen being combined with the haemoglobin in the blood increasing the amount of nitrogen being physically dissolved in the blood breathing into a paper bag

exemple 307 Increasing the amount of oxygen being physically dissolved in the blood. — Increasing the amount of oxygen being physically dissolved in the blood.

Hypoxic hypoxia may be caused by .1 climbing to a high altitude without using ?

Question 123-23 : 1 2 and 3 1 and 3 2 and 3 1 and 2

In order to avoid hypoglycaemia ?

Question 123-24 : A pilot should eat regularly and ensure he/she has a balanced diet a pilot should never eat sugar or sweets peanuts are recommended because of their high energy value a pilot should not take snacks between meals

exemple 315 A pilot should eat regularly and ensure he/she has a balanced diet. — A pilot should eat regularly and ensure he/she has a balanced diet.

In the case of changes to circadian rhythms the readjustment to a new time zone ?

Question 123-25 : Is most rapid when flying westbound is most rapid when flying eastbound is the same in both westbound and eastbound flights occurs immediately as circadian rhythms do not change depending on direction of flying

exemple 319 Is most rapid when flying westbound. — Is most rapid when flying westbound.

In tropical zones it is recommended that ?

Question 123-26 : Cold drinks be taken from sealed containers one uses ice cubes in cold drinks one eats raw vegetables one eats fruit without peeling them to ensure a supply of vitamins

exemple 323 Cold drinks be taken from sealed containers. — Cold drinks be taken from sealed containers.

Night vision ?

Question 123-27 : Requires up to 30 minutes to reach its best performance requires 5 minutes to reach its best performance is insensitive to short duration light sources is insensitive to lightning flashes in storms

exemple 327 Requires up to 30 minutes to reach its best performance. — Dark adaptation ..dark adaptation is an independent process during which each eye adjusts from a high luminance setting to a low luminance setting the exact mechanisms are unclear but they are known to include biochemical physical and neural ..both rods and cones contain light sensitive chemicals called photopigments the photopigment in the rods is called rhodopsin there are three different types of cone photopigments that are composed of opsins only slightly different from rhodopsin upon exposure to light photopigments undergo a chemical reaction that converts light energy to electrical activity initiating visual impulses in the retina that are conducted by nerve fibers from the eye to the brain the initial chemical reaction is called light adaptation and in this process the photopigments are decomposed intense light will decompose the photoreceptor pigments rapidly and completely thus reducing retinal sensitivity to dim light regeneration of the photopigments occurs during dark adaptation ..the fully dark adapted eye in which photopigment regeneration is complete restores retinal sensitivity to its maximal level rods and cones differ markedly however in their rate of dark adaptation cones attain maximum sensitivity in 5 7 minutes while rods require 30 45 minutes or longer of absolute darkness to attain maximum sensitivity after exposure to bright light ..the cones have a faster rate of photochemical regeneration because they function in greater light than the rods the cones however do not achieve the same level of sensitivity as the rods the rods slowly adapt to dim illumination but eventually achieve a much greater sensitivity than the cones depending on the preadaptation to light dark adaptation is about 80% complete within 30 minutes but it may take hours or even days to acquire total dark adaptation Requires up to 30 minutes to reach its best performance.

On approach by day in snowy conditions without reference to glideslope ?

Question 123-28 : Judgement of height is extremely difficult there is a risk of you underestimating your speed estimation of height and distance is not a problem for a well trained pilot there is a risk of you entering a spin

exemple 331 Judgement of height is extremely difficult. — Judgement of height is extremely difficult.

The circulation of blood .1 transports oxygen to the body cells.2 withdraws ?

Question 123-29 : 1 2 and 3 2 and 3 1 and 3 1 and 2

The dry atmosphere of the flight deck may cause dehydration which may lead to a ?

Question 123-30 : Drink sufficient non carbonated liquids drink plenty of coffee drink cool cola drinks drink tea

exemple 339 Drink sufficient non-carbonated liquids. — Drink sufficient non-carbonated liquids.

The exchange of gases between the alveoli and the blood is due to ?

Question 123-31 : Diffusion changes in atmospheric pressure inspiration physical exercise

exemple 343 Diffusion. — .fick's law gas diffusion law gas will diffuse from areas of high concentration to areas of low concentration Diffusion.

The total gas volume of the lung is the sum of .1 tidal volume.2 inspiratory ?

Question 123-32 : 1 2 3 and 4 1 and 2 2 and 3 1 2 and 3

exemple 347 1, 2, 3 and 4. — 1, 2, 3 and 4.

To avoid incapacity due to gastro intestinal problems it is recommended that a ?

Question 123-33 : Non carbonated water wine or beer carbonated water no drinks as fluids are not important

exemple 351 Non-carbonated water. — Non-carbonated water.

To prevent empty field myopia at higher altitudes ?

Question 123-34 : It is recommended that a pilot uses short sharp scans or periodically focuses on a distant object such as a wing tip or cloud edge it is recommended that a pilot focuses on an object known to be approximately one metre away one should concentrate only on instruments one should book an appointment with an ophthalmologist as soon as possible

exemple 355 It is recommended that a pilot uses short sharp scans, or periodically focuses on a distant object such as a wing-tip or cloud edge. — It is recommended that a pilot uses short sharp scans, or periodically focuses on a distant object such as a wing-tip or cloud edge.

What human function is most sensitive to lack of oxygen ?

Question 123-35 : Night vision motor co ordination hearing touch

exemple 359 Night vision. — Night vision.

Which of the following gases is fundamentally responsible for decompression ?

Question 123-36 : Nitrogen oxygen carbon dioxide sodium

exemple 363 Nitrogen. — .decompression sickness results from bubbles formed as dissolved gases come out of solution in tissues due to a drop in ambient pressure the principal gas involved is nitrogen .as nitrogen in air is inhaled it dissolves in the body and reaches equilibrium with the liquid phase tissue and blood .the concentration of nitrogen dissolved is proportional to the partial pressure of nitrogen in the inhaled gas henry's law as one descends below the surface these partial pressures increase with depth as one ascends from depth or climbs in altitude the partial pressures of the gases in the breathing mixture decrease if the nitrogen partial pressure in the breathing gas is reduced or eliminated a gradient is established across the alveoli nitrogen is off gassed from the various tissue compartments and may require 12 hours or more to reach equilibrium Nitrogen.

You suffered a rapid decompression without the appearance of any decompression ?

Question 123-37 : Seek prompt aeromedical advice nothing you may fly immediately delay your next flight for 6 hours seek aeromedical advice only if the symptoms become apparent

exemple 367 Seek prompt aeromedical advice. — Seek prompt aeromedical advice.

Perceptional illusions are ?

Question 123-38 : Normal and can be prevented by trusting instrument read out usually not serious except in bad weather abnormal and indicate weakness in one or more of the senses never caused by the brain's ability to distort normal sense inputs

exemple 371 Normal and can be prevented by trusting instrument read-out. — Normal and can be prevented by trusting instrument read-out.

Ozone in the air of a pressurized cabin can be eliminated by ?

Question 123-39 : Ozone converters avoiding flights along the equator climbing to altitudes above 45000 ft spraying detergents

exemple 375 Ozone-converters. — Ozone-converters.

One of the earliest and most significant features of hypothermia extreme cold is ?

Question 123-40 : Apathy aggression anxiety aggression and anxiety

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4879 Free Training Exam