Atmospheric Pressure and Altitude Sickness

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What is the term for high atmospheric pressure?

Microgravia

Barometric Pressure

Hypobarism

Hyperbarism (correct)

What is the normal atmospheric pressure at sea level?

760 mm Hg (correct)

800 mm Hg

700 mm Hg

900 mm Hg

What is the term for low atmospheric pressure?

Hypobarism (correct)

Microgravia

Hyperbarism

Barometric Pressure

What is the term for a condition where there is high altitude and low barometric pressure?

Hypobarism Signup and view all the answers

What is the term for a condition where there is low gravity?

Microgravia Signup and view all the answers

What is the term for a condition where there is high altitude and low oxygen levels?

Acute Mountain Sickness Signup and view all the answers

What is the normal composition of air?

Oxygen, Nitrogen, Argon Signup and view all the answers

What is the term for the force that opposes motion?

Friction Signup and view all the answers

What is the term for the force that causes objects to fall towards the ground?

Gravity Signup and view all the answers

What percentage of the air at sea level is composed of oxygen?

20.9476% Signup and view all the answers

According to Dalton's Law of Partial Pressure, what is the total pressure exerted by a mixture of gases in a container?

The sum of the partial pressures of each gas Signup and view all the answers

What is the partial pressure of nitrogen in a mixture of gases at a total pressure of 760 mmHg?

593.0 mmHg Signup and view all the answers

What is the relationship between volume and pressure according to Boyle's Law?

Inverse Signup and view all the answers

What is the equation that represents Charles' Law?

V1/T1 = V2/T2 Signup and view all the answers

What is the solubility of a gas dependent on according to Henry's Law?

Partial pressure Signup and view all the answers

What is the level of the sea's surface used for in geography?

Reckoning of geographical features Signup and view all the answers

What is the percentage of carbon dioxide in the air at sea level?

0.0314% Signup and view all the answers

What is the partial pressure of oxygen in a mixture of gases at a total pressure of 760 mmHg?

159.0 mmHg Signup and view all the answers

What is the critical depth for most individuals?

30m Signup and view all the answers

What is the name of the device conceived by Jacque Cousteau in 1943?

Self-Contained Underwater Breathing Apparatus Signup and view all the answers

What happens to venous return when external hydrostatic pressure increases?

It increases Signup and view all the answers

What is the effect of increased barometric pressure on the respiratory system?

It increases the work of breathing Signup and view all the answers

What is High Pressure Neurological Syndrome characterized by?

Tremor, dizziness, and decreased mental dexterity Signup and view all the answers

What happens during the descent phase of deep water diving?

Compression or squeeze of body cavities Signup and view all the answers

What is the primary cause of barotrauma in deep water diving?

Expansion of gas in body cavities Signup and view all the answers

Why is it necessary to exhale during ascent in deep water diving?

To prevent overdistention of the lungs Signup and view all the answers

What is the effect of increased barometric pressure on the endocrine system?

It decreases ADH secretion and increases ANP secretion Signup and view all the answers

At what altitude does Acute Mountain Sickness (AMS) begin?

8,000 ft Signup and view all the answers

What determines the hypoxic effect of high altitude?

Level of altitude, rate of ascent, and duration of exposure Signup and view all the answers

Who is more likely to experience Chronic Mountain Sickness (Monge's Syndrome)?

High altitude natives (HAN) or lifelong altitude residents Signup and view all the answers

What happens to the volume of gas as one descends in deep water?

It decreases Signup and view all the answers

What is the relationship between barometric pressure and lung volume?

Inversely proportional Signup and view all the answers

What happens to O2 tension in the environment as one goes higher in altitude?

It decreases Signup and view all the answers

What is the relationship between altitude and barometric pressure?

Inversely proportional Signup and view all the answers

What is the term for the condition experienced by high altitude natives (HAN) or lifelong altitude residents?

Chronic Mountain Sickness (Monge's Syndrome) Signup and view all the answers

What are the three main stressors encountered in high altitude?

Hypoxia, altitude, and dehydration Signup and view all the answers

What occurs when breathing 100% oxygen at a depth of 33ft?

Oxygen Toxicity Signup and view all the answers

What is the main cause of gas bubbles in the hyperbaric condition?

High pressure Signup and view all the answers

What is the relationship between depth and pressure in the hyperbaric condition?

Direct relationship Signup and view all the answers

What is the composition of air at sea level?

78% nitrogen and 21% oxygen Signup and view all the answers

What is the effect of high altitude on the atmosphere?

It becomes hypobaric Signup and view all the answers

What is the relationship between volume and pressure in the hyperbaric condition?

Inverse relationship Signup and view all the answers

What is the effect of gravity in the troposphere and exosphere?

It does not lead to the translocation of fluid to the lower extremities Signup and view all the answers

What is the purpose of adding N2 to Heliox?

To alleviate HPNS Signup and view all the answers

What is the term for the condition that occurs when breathing compressed air at a depth of 150ft?

Nitrogen Narcosis Signup and view all the answers