Human Body
Where can the body take in more air molecules with each breath?
At lower altitudes where the air density and pressure are greater
Why do passenger airliners fly above the clouds in the stratosphere?
To avoid weather
What would you encounter if you were to travel from Earth's surface through the exosphere to the edge of space?
lower and lower pressure the higher you traveled
What are the cardiovascular system's principal parts?
Heart, Pulmonary arteries, pulmonary veins, and capillaries
How do the three types of G-Forces act?
What causes gases in the human body to expand when an aircraft climbs?
The drop in atmospheric pressure
What is partial pressure?
The amount of pressure each gas applies individually
Which law does decompression sickness illustrate?
Henry's Law
What are some of the ill effects the body may experience at reduced pressure?
Hypoxia, hyperventilation, trapped gas, altitude-induced decompression sickness
What is the safest rule as a crew member while taking any medication unless approved to do so by the FAA?
Not to fly
What happens in the blood and tissues when an aircraft ascends and the pressure drops?
They can try to escape in the form of bubbles
What was the name of the British chemist who, in 1803, learned that the amount of gas dissolved in a volume of liquid is proportional to the pressure of the gas?
William Henry
What happens to an object such as a plane way up in the sky as it plummets toward Earth?
Gains more than 1 G
What is a solution to hyperventilation?
Breathe more slowly, sometimes into a paper or cloth bag
What can seriously degrade pilot performance?
Cigarettes, alcohol, and drugs
What is the respiratory system's main purpose?
To take in oxygen and get rid of carbon dioxide
What is NOT a symptom of hypoxia
Mental Alertness
Zone with ozone as its principal ingredient
Stratosphere
What happens if the body isn't able to respond quickly enough to +Gz?
Visual, Vestibular, and somatosensory
What are common signs of dehydration?
Headache, fatigue, cramps, sleepiness, and dizziness
What is one of the cardiovascular system's main functions?
To use blood as a way to carry oxygen from the lungs to organs or body tissue
How can you reduce any pain associated with sinus block?
A slow descent
What are symptoms of motion sickness
Nausea, vomiting, dizziness
Why do students pilots sometimes suffer from airsickness?
Because they aren't used to the motion and spatial orientation clues
Zone with the largest percentage of atmospheric mass
Troposphere