Aeromedical

Question 1

Eyes use cones and rods best when?

• cones
• rods

Answer 1

• Day

- Night

Question 2

How to keep night vision

Answer 2

• avoid bright lights
• avoid bright lights for 30 minutes
• close one eye

Question 3

Night vision illusions

Answer 3

• autokinesis: staring at a light then it seems light begins to move after a few seconds
• false horizon: can confuse bright street light with stars

Question 4

What three systems does your body use to gather orientation?

Answer 4

Vestibular-organs in inner ear that sense position
Somatosensory-nerves in the skin based on gravity, feeling, and sound
Visual-eyes sense position based on what’s seen

Question 5

Types of hypoxia

Answer 5

Hypoxia-reduced oxygen
Hypoxic-insufficient oxygen available to the body as a whole.
Hypemic-blood can’t transport enough oxygen
Stagnant-not flowing
Histotoxic-cells can’t use oxygen even though there’s enough oxygen