Exercise Physiology Test 3 Part2

Question 1

What is Residual Volume?

Answer 1

air that remains in the lungs that cannot be exhaled

Question 2

What is the average of residual volume?

Answer 2

Women- 1.0-1.2L

Male- 1.2-1.6L

Question 3

What is minute ventilation? Equation

Answer 3

Breathing rate X total volume

Question 4

What is the average persons breath in one minute?

Answer 4

12 breaths

Question 5

How many liters is minute ventilation?

Answer 5

6L

Question 6

What increases minute ventilation?

Answer 6

depth or rate of breathing

Question 7

What is max that minute ventilation can reach? Percentage wise

Answer 7

55-65%

Question 8

What is ventilatory threshold?

Answer 8

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

Question 9

What does the excess ventialtion relate directly to?

Answer 9

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

Question 10

What happens to partial pressure as you increase altitude?

Answer 10

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

Question 11

Muscles used durig inspiration and exhalation

Answer 11

Diaphragm, trachea, nose/mouth

Question 12

Carbon dioxide in solution

Answer 12

7-10% of CO2

Question 13

Carbon dioxide as carbamino compounds

Answer 13

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

Question 14

CO2 as bicarbonate

Answer 14

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

Question 15

What does the inset curve show? (Bohr effect)

Answer 15

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

Question 16

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

Answer 16

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

Question 17

What is ejection fraction?

Answer 17

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

Question 18

What is hemoglobin?

Answer 18

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

Question 19

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

Answer 19

15-16 grams

women average 5-10% less

Question 20

What is the average AVO2 difference at rest?

Answer 20

5mL

Question 21

What is AVO2 difference?

Answer 21

difference in oxygen content between arterial and venous blood

Question 22

How is AVO2 difference expressed?

Answer 22

mL per 100mL of bood

Question 23

What is Henry’s law?

Answer 23

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

Question 24

Henry’s law:

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

Answer 24

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

Question 25

What is the valsavla manuever?

Answer 25

forced exhalation agaisnt a closed epiglottis

It impedes blood flow return to the heart

Question 26

When does the valsalva manuever commonly occur?

Answer 26

during weight lifting and other actitivies requiring max force for short time

Question 27

What happens to BP during onset of valsalva manuever?

Answer 27

briefly increases abruptly