HPL Flashcards
Where does cosmic radiation come from? Select the most complete answer.
1- Sun and galaxy
2- Sun, galaxy and Moon
3- Sun
4- Sun, Moon and planets
Sun and galaxy
-Solar radiation may be constant and random (w/ 11 year cycles)
-Galactic radiation is always constant
Which of the following is true regarding the accessibility of engines for maintenance?
1- It is acknowledged in the Shell model because it concerns people interacting with aircraft
2- It is acknowledged in the Shell model because it affects flight safety
3- It is not acknowledged in the Shell model because engine maintenance is not a part of the pilot’s duties
4- It is not acknowledged in the Shell model, because the Shell model only describes the psychological safety factors.
It is acknowledged in the Shell model because it concerns people interacting with aircraft
SHELL model
S = Software (checklists, SOPs, rules, laws…)
H = Hardware (control panel, aircraft design, engines…)
E = Environment (nature + social and economic)
L = Liveware (pilot)
L = Liveware (crew, controllers, managers, maintenance personnel)
Which statement describes the International Standard Atmosphere?
1- Pressure falls with altitude in the whole atmosphere, temperature falls in the troposphere but remains constant in the stratosphere until upper limit of ICAO ISA
2- Temperature falls with altitude in the whole atmosphere, pressure falls in the troposphere but remains constant in the stratosphere
3- Both pressure and temperature fall with rising altitude in the tropsphere and remain constant in the stratosphere
4- Pressure falls with altitude in the whole atmosphere, temperature falls in tropsphere and rises in strastosphere
Pressure falls with altitude in the whole atmosphere, temperature falls in the troposphere but remains constant in the stratosphere until upper limit of ICAO ISA
Up to what altitude does the atmosphere composition remain constant?
1- 50,000 ft
2- 100,000 ft
3- 36,000 ft
4- 70,000 ft
70,000 ft
78% Nitrogen,
21% O2,
1% other
Which of the following is true regarding ozone?
1- It is usually found in mesosphere
2- It consists of a single oxygen atom
3- It consists of 3 oxygen atoms
4- It is safe to breathe in 100% concentration
It consists of 3 oxygen atoms
O3
Ozone layer found in stratosphere
At what altitude does air pressure fall to 50% of sea level pressure?
1- 18,000 ft
2- 25,000 ft
3- 8,000 ft
4- 36,000 ft
18,000 ft
8000 ft = 75% of sea level pressure
18000ft = 50% of sea level pressure
27000ft = 33% of sea level pressure
36000ft = 25% of sea level pressure
What relative humidity is required for human comfort?
1- 40% - 60%
2- 20% - 40%
3- More than 10%
4- More than 75%
40% - 60%
In pressurized aircraft humidity = 5 - 15%
What percentage (approximately) of aviation accidents since the 1980s was caused by human factors?
1- 0.95
2- 0.8
3- 0.5
4- 0.3
0.8
70 - 80%
What is the composition of Earth’s atmosphere?
1- Nitrogen 76% Oxygen 23%, Other 1%
2- Nitrogen 78%, Oxygen 21%, Other 1%
3- Nitrogen 76%, Oxygen 22%, Other 1%
4- Nitrogen 78%, Oxygen 20%, Other 2%
Nitrogen 78%, Oxygen 21%, Other 1%
Remains constant up to 70 000ft
Why is Reason’s accident causation model called the ‘Swiss Cheese Model’?
1- Because Reason was a Swiss psychologist
2- Because errors are layered in this model and accidents are represented by holes.
3- Because it was first introduced by Swiss national airlines
4- Because it features holes in multiple layers of error defence
Because it features holes in multiple layers of error defence
What is anaemia?
1- Lack of white blood cells in the blood
2- Lack of haemoglobin or red blood cells in the blood
3- Lack of platelets in the blood
4- Lack of vitamin B12 and iron
Lack of haemoglobin or red blood cells in the blood
When taking a deep breath, how much air can a healthy male inhale?
1- 3500 ml
2- 2500 ml
3- 1500 ml
4- 4500 ml
3500 ml
Inspiratory capacity = Tidal volume (500mL) + Inspiratory Reserve Volume (3000 mL)
What is the percentage of oxygen and carbon dioxide in alveolar air at sea level?
1- 14% oxygen and 5.3% carbon dioxide
2- 21% oxygen and 0.4% carbon dioxide
3- 21% oxygen and 5.3% carbon dioxide
4- 16% oxygen and 4.3% carbon dioxide
14% oxygen and 5.3% carbon dioxide
Breathing pure oxygen in an unpressurised aircraft at 30,000 ft is equivalent to breathing normal air at what altitude?
1- Sea level
2- 5,000 ft
3- 10,000 ft
4- 15,000 ft
Sea level
-Hypoxia is prevented by additional O2 above 10 000ft
-Above 40 000ft need O2 + pressure
100% O2 at 30 000ft = Sea level ambient air
100% O2 at 40 000ft = 10 000ft ambiente air
Breathing pure oxygen in an unpressurised aircraft at 40,000 ft is equivalent to breathing normal air at what altitude?
1- Sea level
2- 5,000 ft
3- 10,000 ft
4- 20,000 ft
10,000 ft
-Hypoxia is prevented by additional O2 above 10 000ft
-Above 40 000ft need O2 + pressure
100% O2 at 30 000ft = Sea level ambient air
100% O2 at 40 000ft = 10 000ft ambiente air
What is the aorta?
1- The artery that moves blood form the heart to the lungs
2- The biggest vein of the body, connected to the heart
3- The biggest arteriy of a body, connected to the heart
4- The vein that moves blood from the lungs to the heart
The biggest arteriy of a body, connected to the heart
What should you NOT do to counteract hyperventilation?
1- Breathe into a bag
2- Attempt to take a deep breath
3- Speak loudly
4- Breathe calmly
Attempt to take a deep breath
hyperventilation causes decreased pCO2 –> decreased carbonic acid –> blood alkaline
What is the leading factor increasing the risk of coronary heart disease?
1- Smoking
2- Hypotension
3- Family history of illness
4- Obesity
Obesity
Leading cause of stroke = HTA
Which statement describes carbon monoxide?
1- It is toxic, but easy to detect as it has a characteristic smell
2- It is a harmless, odorless and colorless gas that is a product of fuel combustion.
3- It is toxic as it binds with haemoglobin, blocking it from carrying oxygen
4- It is deadly as it fills the alveoli preventing oxygen from entering the bloodstream
It is toxic as it binds with haemoglobin, blocking it from carrying oxygen
Hb has 250x more affinity for CO compared to O2
Humans are most resistant to acceleration in what direction?
1- Positive Y
2- Positive Z
3- Positive X
4- Negative X
Positive X
positive x = accelerating in a car ( X –>)
negative x = braking in a car (<– X)
What is the initial symptom of hypoxia?
1- Blue tinged lips and fingers
2- Joint pain
3- Stomach cramps
4- Pain in the forehead
Blue tinged lips and fingers
What is the most common direction of acceleration experienced in flight?
1- Positive X
2- Positive Z
3- Positive Y
4- Negative X
Positive Z
-POSITIVE Z (moving down) = blood goes to the feet –> Grey out (2-3G) –> Tunne vision –> Black-out (5G) –> Unconsciousness (G-LOC)
-NEGATIVE Z (moving up) = blood goes to the head –> Red-out –> Facial pain –> SOB –> Haemorragic stroke
What is the minimum partial pressure of oxygen in the alveoli for an untrained human?
1- 103 mmHg
2- 25 mmHg
3- 160 mmHg
4- 55 mmHg
55 mmHg
What is the route of deoxygenated blood in the human body?
1- From the body through the left atrium and left ventricle into the lungs
2- From the body, through both ventricles, into the lungs
3- From the lungs through right atrium and left ventricle into the body
4- From the body, through right atrium and right ventricle into the lungs
From the body, through right atrium and right ventricle into the lungs
What is black-out caused by?
1- Positive Z acceleration and blood deprivation of the eyes and brain
2- Positive Z acceleration and blood pooling up in the eyes and head
3- Negative Z acceleration and blood pooling up in the eyes and head
4- Positive Y acceleration and blood deprivation of the eyes and brain
Positive Z acceleration and blood pooling up in the eyes and head
-POSITIVE Z (moving down) = blood goes to the feet –> Grey out (2-3G) –> Tunne vision –> Black-out (5G) –> Unconsciousness (G-LOC)
-NEGATIVE Z (moving up) = blood goes to the head –> Red-out –> Facial pain –> SOB –> Haemorragic stroke
Where does oxygen pass into the blood?
1- In the bronchi
2- In the alveoli
3- In the trachea
4- On the diaphragm
In the alveoli
What is the cardiac output of an average adult?
1- 5 l/min
2- 50 ml/second
3- 3 l/min
4- 0,5l/s
5 l/min
CO = SV (70ml) * HR
What is the route of oxygenated blood in the human body?
1- From the lungs, through left atrium and left ventricle into the body
2- From the body through the left atrium and left ventricle into the lungs
3- From the lungs, through right atrium and right ventricle into the body
4- From the lungs, through both ventricles, into the body
From the lungs, through left atrium and left ventricle into the body
What are the types of blood cells?
1- Red blood cells and platelets
2- Red blood cells and white blood cells
3- Red blood cells, white blood cells and platelets
4- Red blood cells, white blood cells and yellow blood cells
Red blood cells, white blood cells and platelets
What is the normal blood pressure of a healthy adult?
1- 120/80
2- 140/60
3- 80/120
4- 60/140
120/80
How does smoking affect hypoxia?
1- Smoking does not affect hypoxia
2- Smokers experience hypoxia
symptoms later than nonsmokers
3- Smokers experience hypoxia symptoms sooner than nosmokers
4- Smoking delays the onset of hypoxia but makes the symptoms harsher.
Smokers experience hypoxia symptoms sooner than nosmokers
In what unit is blood pressure usually given?
1- bar
2- mmHg
3- Atmospheres
4- Hectopascals
mmHg
If you feel alternately cold and hot, dizzy, anxious, tingly in the hands and feet and breathe rapidly, what might you be suffering from?
1- Hyperventillation
2- Hypoxia
3- Cyanosis
4- Anaemia
Hyperventillation
What noise level is the threshold of Noise-Induced Hearing Loss?
1- 90 dB
2- 80 dB
3- 100 dB
4- 120 dB
90 dB
NIHL = Wear of hair cells (loss of stereocillia)
Factors affecting NIHL:
- Exposure to heavy noise (>85dB) –> max recommended exposure time = 8h
- Duration
What does the visual acuity of 6/12 mean?
1- A person sees better than average
2- A person sees worse than average
3- A person sees an average
4- A person sees worse than average at seeing close objects but better than average at seeing distant objects
A person sees worse than average
What are rods in the eye?
1- Structural elements that give the eye its shape
2- Light sensitive cells that only activate when there is enough light
3- Light sensitive cells that cannot distinguish colours
4- Structural elements that hold the iris in place
Light sensitive cells that cannot distinguish colours
Responsible for SCOTOPIC (shades of gray) and NIGHT vision
Highest concentration at 10-20º from fovea (best visual accuity in the dark)
Where is the blindspot located?
1- On the retina, in the place where the optic nerve enters the eye
2- On the retina, directly in front of the pupil
3- In the fovea
4- In the middle of the cornea
On the retina, in the place where the optic nerve enters the eye
Blue, violet and UV light can cause damage to the retina!
Which tones are affected by old age hearing loss first?
1- Low tones first
2- High tones first
3- All tones at the same time
4- High and low tones first, leaving only the intermediate range
High tones first
“High age = High tones”
How does colour blindness affect both sexes?
1- It affects men more frequently than women
2- It affects both sexes equally
3- It affects women more frequently than man
4- It affects different colours in men and women
It affects men more frequently than women
Linked to X chromossome –> men are more likey to have disease, women may be just carriers.
What colours and types of light cause damage to the retina?
1- Orange, red and infrared
2- Blue, violet and ultraviolet
3- Yellow light from the sun
4- White light from incandescent lightbulbs
Blue, violet and ultraviolet
Which statement describes eye adaptation?
1- It takes longer from dark to light conditions than vice versa
2- It can take up to 5 minutes for going from dark to bright conditions and up to 10 minutes when going from bright to dark conditions
3- It takes the same amount of time from bright to dark conditions and vice versa
4- It takes about 30 minutes when going from bright to dark conditions and 10 seconds when going from dark to bright conditions
It takes about 30 minutes when going from bright to dark conditions and 10 seconds when going from dark to bright conditions
Adaptation = adjustment of eyes to high or low levels of illumination (achieved by pupils contraction or dilation)
-Darkness to light = 10 s
-Light to darkness = 30 min
When does a pilot need to have a second pair of corrective glasses?
1- When flying in corrective glasses, sunglasses or contact lenses
2- Always
3- When flying in corrective glasses or corrective contact lenses
4- When flying in glasses
When flying in corrective glasses or corrective contact lenses
What does Central Nervous System consist of?
1- Spinal cord
2- Brain
3- Brain and spinal cord
4- Brain, spinal cord and nerve endings
Brain and spinal cord
What is the EASA’s limit of blood alcohol concentration for flying?
1- 0
2- 0.05%
3- 0.02%
4- 0.01%
0.02%
20mg/100mL
Liver elimination (cannot be sped up!) = 10-15mg/h
In what phase of sleep do dreams appear?
1- Non-REM phase
2- Stage 4 of sleep
3- Deep sleep
4- REM phase
REM phase
-REM is the most important stage
-Brain is highly active
-Memory consolidation
Food poisoning usually sets in after what time?
1- About 90 minutes
2- About 5 minutes
3- About 6 hours
4- About 30 minutes
About 90 minutes
Symptoms = Vomitting, nausea, diarrhea, stomach pain, anorexia
Which of these contain caffeine?
1- Coffee, tea, chocolate, coca-cola style soda
2- Coffee, tea, chocolate
3- Coffee and tea
4- Coffee and coca-cola style soda
Coffee, tea, chocolate, coca-cola style soda
***Which of the following substances enter the lungs when smoking a cigarette?
1- Nicotine and carbon monoxide
2- Tar, benzopyrene and carbon monoxide
3- Nicotine, carbon monoxide and ozone
4- Nicotine, tar and carbon monoxide
Nicotine, tar and carbon monoxide
How long does a circadian rhythm without outside stimuli take?
1- 24 hours
2- 25 hours
3- 50 hours
4- 48 hours
25 hours
Free running = 24h (up to 48h)
In isolation = 25h
Lasts longer when travelling WEST
Lasts shorter when travelling EAST
Adjustment = 90 min /day
How can the alcohol elimination rate be sped up?
1- It cannot be speed up
2- By drinking black coffee
3- By taking a cold shower or breathing pure oxygen
4- By drinking black coffee, taking a cold shower or breathing pure oxygen
It cannot be speed up
What is barotrauma caused by?
1- By the liquid inside a body expanding when the pressure decreases
2- By the gas inside a body expanding when the temperature increases
3- By the gas inside a body expanding when the pressure increases
4- By the gas inside a body expanding when the pressure decreases
By the gas inside a body expanding when the pressure decreases
Which of the following medications can be combined with alcohol intake?
1- Vitamin C, ibuprofen (Advil, Motrin) and paracetamol/acetaminophen
2- Ibuprofen and vitamin A
3- Codeine and paracetamol/acetominophen
4- Vitamin C and A
Vitamin C and A
paracetamol = Hepatotoxicity
Codeine = breathing center depression
Ibuprofen = Peptic ulcers
What is the BMI of a person that weighs 100 kg and is 2 m tall?
1- 20
2- 25
3- 22.5
4- 20
25
kg / m2
**
What are mnemonics?
1- Techniques used to improve long-term memory
2- Smallest bits of information that a human can memorise
3- The connections between different memories held in our brains
4- Memory neurons in our brains
Techniques used to improve long-term memory
What is a somatogravic illusion?
1- It is an illusion of aircraft pitching up when accelerating and pitching down when decelerating
2- It is an illusion of aircraft pitching down when accelerating and pitching up when decelerating
3- It is an illusion of the aircraft being in turn when it is flying straight and level
4- It is an illusion of a banked horizon when in clouds
It is an illusion of aircraft pitching up when accelerating and pitching down when decelerating
Accelerating = Feels like climbing (pitch up)
Deccelerating = Feels like descending (pitch down)
Turning = Feels like climbing