Whatwould you encounter if you travel from Earth’s surface through exosphere to edge of space?

lowerand lower pressure the higher you traveled

Whatis one of the cardiovascular system’s main functions?

uses blood to take oxygen from lungs to organs / body tissue

Whatare some ill effects the body may experience at reduced pressure?

hypoxia,hyperventilation, trapped gas, Hi alt decompres sick

What ispartial pressure?

theamount of pressure each gas applies individually

Whathappens if the body isn’t able to respond quickly enough to +Gz?

Oneof the first signs is a progressive loss of vision.

Howdo the three types of g-forces act?

alongthree different axes perpendicular to one another

Whatis the respiratory system’s main purpose?

totake in oxygen and get rid of carbon dioxide

Whatare the cardiovascular system’s principal parts?

heart,pulmonary arteries, pulmonary veins, and capillaries

Wherecan the body take in more air molecules with each breath?

atlower altitudes where air density and pressure are greater

Whathappens to gases in the blood and tissues when an aircraft ascends and thepressure drops?

Theycan try to escape in the form of bubbles.

Whatthree systems work together to figure out an aircraft’s position, attitude, and movement?

visual,vestibular, and somatosensory

Whatis a solution to hyperventilation?

Breathemore slowly, sometimes into a paper or cloth bag.

Whatcauses gases in the human body to expand when an aircraft climbs?

thedrop in atmospheric pressure

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Aerospace Physiology AFJROTC

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AFJROTC Aerospace Physiology Knowledge Test

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Questions 20

Answers

1
Whatwould you encounter if you travel from Earth’s surface through exosphere to edge of space?
aswitch between low & high pressure with every 1,000' gained
higherand higher pressure the higher you traveled
lowerand lower pressure the higher you traveled
nochange in pressure the higher you traveled
2
Whatis one of the cardiovascular system’s main functions?
tomove oxygen from the body tissues to the lungs
uses blood to take oxygen from lungs to organs / body tissue
toprevent the body from overheating
uses blood to move CO2 from the lungs to body tissues
3
Whatare some ill effects the body may experience at reduced pressure?
hypoxia,hyperventilation, trapped gas, Hi alt decompres sick
earblock, sinus block, hypoxia, migraine
hyperventilation,migraine, cough, hypoxia
decompress sick, hypoxia, migraine, cough, spatial disorient
4
What ispartial pressure?
thepressure between the sinuses and the middle ear
theamount of pressure each gas applies individually
theamount of gas dissolved in a volume of liquid
pressure differences between middle ear and frontal sinuses
5
Whathappens if the body isn’t able to respond quickly enough to +Gz?
The pilotmay vomit.
Oneof the first signs is a progressive loss of vision.
Thepilot may experience a wider range of vision.
Thepilot may experience enhanced motor control.
6
Whatare symptoms of motion sickness?
extremethirst
nausea,vomiting, dizziness
cramps
fatigue,breathlessness
7
What happensto an object such as a plane way up in the sky as it plummets toward Earth?
createsits own air pressure
losesacceleration as it reaches denser air
surpassesterminal velocity
gains morethan 1 G
8
Whichlaw does decompression sickness illustrate?
Henry’slaw
Newton’slaw
Boyle’slaw
Barry’slaw
9
Whichsystem sends signals from the skin, joints, and muscles to the brain?
visual
somatosensory
vestibular
cardiovascular
10
Howdo the three types of g-forces act?
alongthree different axes perpendicular to one another
likeweight, lift, and drag
unpredictably
asforces of deceleration that make a pilot feel 50 %lighter
11
Whatis the respiratory system’s main purpose?
totake in oxygen and get rid of carbon dioxide
totake in oxygen
tobring blood to the heart
tocirculate blood through the body
12
Howcan you reduce any pain associated with sinus block?
painkillers
aquick ascent
blowingthe nose
aslow descent
13
Whatare the cardiovascular system’s principal parts?
heart,pulmonary arteries, pulmonary veins, and capillaries
heart,pulmonary veins, lungs, and pancreas
brain,heart, lungs, and liver
liver,heart, kidney, and bladder
14
Wherecan the body take in more air molecules with each breath?
athigher altitudes where the air contains fewer molecules
atlower altitudes with supplemental oxygen use
atlower altitudes where air density and pressure are greater
athigher altitudes where the air is thin
15
Whatis NOT a symptom of hypoxia?
mentalalertness
tinglingin the fingers and toes and poor coordination
headache andsweating
dizzinessand lightheadedness
16
Whathappens to gases in the blood and tissues when an aircraft ascends and thepressure drops?
Theycontract and fuse together.
Theycan try to escape in the form of bubbles.
Theyshoot out the nose the way a soda sometimes does.
Theymultiply.
17
Whatthree systems work together to figure out an aircraft’s position, attitude, and movement?
vestibular,auditory, and cardiovascular
visual,cardiovascular, and somatosensory
visual,vestibular, and somatosensory
cardiovascular,visual, and respiratory
18
Whatis a solution to hyperventilation?
Breathemore slowly, sometimes into a paper or cloth bag.
Don’ttalk to allow the breathing rate to pick up.
Breathemore quickly to flush out the excess carbon dioxide.
Breathe morequickly to draw in more oxygen.
19
Whydo passenger airliners fly above the clouds in the stratosphere?
for abetter view of the land below
toreach a greater speed
toavoid weather
tomake it easier for passengers to breathe
20
Whatcauses gases in the human body to expand when an aircraft climbs?
same lifting force that works on airfoils acts on molecules
thedecrease in temperature
thedrop in atmospheric pressure
therate of climb

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