Aeromedical

Question 1

Cones in the eye are located:

Answer 1

In the center of the eye

Question 2

How long should someone wait before flying after conducting a non decompression stop diving activity? and at what altitude?

Answer 2

12 hrs for flights up to 8,000’ MSL

Question 3

What do cones help you see?

Answer 3

1. Color
2. Details

(They’re effective in the day)

Question 4

Rods are located:

Answer 4

In the periphery of the eye

Question 5

Rods help you see:

Answer 5

Movement

Question 6

How long does it take the rods of the eye to adjust to darkness?

Answer 6

It takes about 30 min to adapt

Question 7

An upsloping runway can create the illusion that the aircraft is ________ than it actually is, leading to a _______approach.

Answer 7

Higher ; Lower

Question 8

A downsloping runway can create the illusion that the aircraft is _______ than it actually is, leading to a _________ approach.

Answer 8

Lower ; Higher

Question 9

After 30 min in the darkness, rods become adjusted and they are ______ times more sensitive to light than your cones.

Answer 9

10,000

Question 10

How should your viewing be used when looking for traffic and other hazards at night?

Answer 10

You should use off center viewing while looking for traffic and other hazards at night

Question 11

What chemical is built up in your eyes in order to adapt to low light levels?

Answer 11

Rhodopsin

Question 12

What systems does our body use to make sense of our place in space?

Answer 12

Somatsensory: System: Skin/Joints/Muscles
Visual System: Eyes
Vestibular System: Inner Ear

Question 13

What is an example of a vestibular system illusion in regards with the fluid in the ear?

Answer 13

1. When in a bank angle too long, the fluid inside your ear catches up with the rate of the turn.
2. When that happens, the hairs the fluid deflects are no longer being deflected and no signal is sent to the brain
3. The brain will think the turn has stopped, in reality you’ll still be in the turn

Question 14

Hypoxic Hypoxia

Answer 14

A blocked airway/drowning or insufficient partial pressure of O2 in the air

Question 15

Hypemic Hypoxia

Answer 15

Reduction in the O2 carrying capacity of the blood.

• Carbon monoxide can be absorbed by the blood cells instead of O2 and that can suffocate the body’s O2 supply

Question 16

Stagnant Hypoxia

Answer 16

• Caused by high G forces, shock or cold temperatures
• Lack of O2 due to poor circulation

Question 17

Histotoxic Hypoxia

Answer 17

• Inability of the cells to use O2
• Can be caused by alcohol consumption, drugs etc.

Question 18

When is crew required to use O2 above 12,500MSL?

Answer 18

When longer than 30 min above this altitude

Question 19

When should crew use O2 above 14,000MSL?

Answer 19

Crew must use O2 at all times

Question 20

Hyperventilation

Answer 20

Excessive rate and depth of respiration leading to abnormal loss of Co2 from the blood

Question 21

If flying above 8,000’ MSL, how long should you wait before flying if you had gone on a controlled scuba dive session?

Answer 21

24 hrs

Question 22

If flying under 8,000’ MSL and you just finished a non-controlled dive, how long should you wait before flying?

Answer 22

12 hours for noncontrolled
24 hours for controlled diving

Question 23

For divers who perform decompression stops, how long should they wait before taking a flight?

Answer 23

• 24 hrs

Question 24

Someone who performed non decompression stop diving, and wants to take a flight how long should they wait before taking a flight?

Answer 24

• 12 hrs if flight is below 8,000’ MSL
• 24 hrs if flying above 8,000’ MSL

Question 25

Why must someone wait before taking a flight after performing deep sea diving with or without decompression stops?

Answer 25

• Because they would need to allow their body to rid itself of nitrogen accumulated from diving in lower barometric pressures
• If you don’t allow the body to naturally dissolve the nitrogen in the tissues, they will be forced out in a physical form of bubbles experienced with higher altitudes