Exercise Physiology Test 3 Part2 Flashcards

1
Q

What is Residual Volume?

A

air that remains in the lungs that cannot be exhaled

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2
Q

What is the average of residual volume?

A

Women- 1.0-1.2L

Male- 1.2-1.6L

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3
Q

What is minute ventilation? Equation

A

Breathing rate X total volume

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4
Q

What is the average persons breath in one minute?

A

12 breaths

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5
Q

How many liters is minute ventilation?

A

6L

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6
Q

What increases minute ventilation?

A

depth or rate of breathing

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7
Q

What is max that minute ventilation can reach? Percentage wise

A

55-65%

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8
Q

What is ventilatory threshold?

A

the point at which pulmonary ventilation increases disproportionately with oxygen uptake during graded exercise

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9
Q

What does the excess ventialtion relate directly to?

A

carbon dioxide’s increases output from the bffering of lactate that begins to accumulate from anaerobic metabolism

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10
Q

What happens to partial pressure as you increase altitude?

A

Pressure isn’t pushing down on you as hard so it is harder to breath as you go higher

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11
Q

Muscles used durig inspiration and exhalation

A

Diaphragm, trachea, nose/mouth

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12
Q

Carbon dioxide in solution

A

7-10% of CO2

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13
Q

Carbon dioxide as carbamino compounds

A

20% of CO2 reacts with amino acid molecules of blood proteins

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14
Q

CO2 as bicarbonate

A

70% of CO2 in solution combines with water to form carbonic acid

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15
Q

What does the inset curve show? (Bohr effect)

A

Increases in acidity ad temperature cause the oxyhemoglobin dissocations curve to shift downward and to the right (enhanced unloading)

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16
Q

In Bohr effect, what happens to oxygen release during intense exercise?

A

increased metabolic heat and acidity in active tissues augments oxygen realease.

17
Q

What is ejection fraction?

A

amount of blood pumped out of LV relative to the total amont of blood recieved.

18
Q

What is hemoglobin?

A

a red protein responsible for transporting oxygen in the blood of vertebrates

19
Q

In men, how many grams of hemoglobin do 100mL of their blood contain?
Relation to females?

A

15-16 grams

women average 5-10% less

20
Q

What is the average AVO2 difference at rest?

21
Q

What is AVO2 difference?

A

difference in oxygen content between arterial and venous blood

22
Q

How is AVO2 difference expressed?

A

mL per 100mL of bood

23
Q

What is Henry’s law?

A

if temperature remains constant, the quantity of a gas dissolved in a liquid varies in direct proportion to its partial pressure

24
Q

Henry’s law:

Amount of gas dissolved in a fluid depends on which two factors?

A

Pressure differential between the gas above the fluid and the gas dissolved in it
Solubility of the gas in the fluid

25
What is the valsavla manuever?
forced exhalation agaisnt a closed epiglottis It impedes blood flow return to the heart
26
When does the valsalva manuever commonly occur?
during weight lifting and other actitivies requiring max force for short time
27
What happens to BP during onset of valsalva manuever?
briefly increases abruptly