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ENVIRONMENTAL CONDITIONS - ALTITUDE 1

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Total cards: 12•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (12)

#1
Front (Question)

Air at any level contains how much % of • O2 • N • CO2

Back (Answer)

O2 = 20.93% N = 79.04% CO2 = 0.03%

#2
Front (Question)

At altitude, there is a reduction in the what?

Back (Answer)

Pressure of O2 entering the lungs

#3
Front (Question)

This reduces the pressure differential between the alveoli and the capillaries resulting in what?

Back (Answer)

• Resulting in less O2 diffusing from the alveoli into the blood.

#4
Front (Question)

Define concentration gradient

Back (Answer)

Gas exchange takes place due to a concentration difference

#5
Front (Question)

OXYGEN move from *what into the *what which surround them

Back (Answer)

• alveoli of the lungs • Capillaries

#6
Front (Question)

CARBON DIOXIDE moves from *what into the *what to be what

Back (Answer)

• alveoli • to be expired

#7
Front (Question)

OXYGEN moves from a *what to the *what where they are of *what

Back (Answer)

• high concentration in the alveoli • to the capillaries where they are of low concentration

#8
Front (Question)

At sea level, O2 has a partial pressure of

Back (Answer)

159 mmHg

#9
Front (Question)

At Mt Everest, O2 has a partial pressure of

Back (Answer)

48mmHg

#10
Front (Question)

In surrounding venous blood, O2 has a partial pressure of

Back (Answer)

47mmHg at any altitude

#11
Front (Question)

So at sea level pressure difference is which means diffusion is what?

Back (Answer)

159-47 = 112mmHg Diffusion is easy

#12
Front (Question)

So on Mt Everest pressure difference is which means diffusion is what?

Back (Answer)

48-47 = 1mmHg Diffusion is nearly impossible