Intro Flashcards
What percentage of accidents occur due to human performance
75% - 80%
Nervous system links
Nervous system Peripheral NS > Motor > Sensory Somatic >Autonomic
Central NS
>Spinal chord
>Brain
Resting heart beat/ Amount of breaths in a minute
RHB: 60 - 80
Breaths: 30 - 50
What is the main indicator/factor for myocardial Infarction (Heart attack)
Family History
What is the composition of the atmosphere ?
Nitrogen: 78%
Oxygen: 21%
Other: 1%
The circulatory system ?
oxygenated blood from lungs though left aorta and ventricle through left side of body
De-oxygenated blood from body through right aorta and ventricle to lungs
Cycle repeats
The lungs ?
Oxygen diffuses into oxygen-poor blood vessels from oxygen rich air in lumen
Oxygenated blood = arteries
De-oxygenated blood = veins
What is Hypoxia and the symptoms ?
Lack of sufficient oxygen to meet the needs of the body
MS:
Personality change
Other symptoms: Cyanosis (Finger tips turn blue) Impaired thinking Judgement slow reactions Diminished vision/hearing Impaired memory
What is the effect of Altitude?
10,000 ft = danger zone from Easa
14,000 ft = Lack of judgement + concentration
18,0000 ft = loss of judgement + concentration
Hyperventilation
Breathing excessively
MS:
Dizziness, increased heat
Tingling in toes + fingers
4 types of Hypoxia
Hypoxic - Unable to breath available 02 cause of partial pressure
Anaemic - Reduction in 02 carrying compatibility of the blood
Stagnant - Failure of circulatory system (Stress on body e.g. G-force)
Histotoxic - Drugs + Alcohol
Should you fly after diving?
If controlled ascent needed 24hrs before flying
If no controlled ascent 12hrs
(Lead to Decompression sickness - nitrogen can’t be released so bubbles form in blood)
(Henrys law)
How long does it take to adjust to seeing at night + during the day?
Night = 30 mins Day = 7 seconds
What are the limitations of the eye
Eye affected by:
>The amount of light >The contrast of an object and background >Size + contours of object >Distance of object from eye >Relative motion of object >Atmospheric condition (dust, smoke etc)
What are some runway illusions that could occur?
Thinking runways are closer than they appear due to width (pilot used to specific type of runway)
Sloping runways can make the aircraft appear higher or lower than they actually are