Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
1. What are 3 main purposes of pulmonary ventilation?
|
Eliminate waste-CO2,Reoxygenate-O2, Buffer acids-pH balance
|
|
|
2. What are the 2 main zones of the lung?
|
Conduction zone, Respiration zone
|
|
|
What differentiates (the 2 zones) them?
|
One moves air (1-16), One allows gas exchange (17-23)
|
|
|
3. How does inspiration/expiration occur?
|
Contraction of diaphragm (primarily) increases volume of lung thus reducing pressure below atm pressure and allowing filling of lungs. Relaxing muscles compresses lungs expelling air
|
|
|
4. Identify the following static lung volumes/pulmonary measurements:
|
(See following)
|
|
|
Identify: Vital capacity-
|
Maximum volume of air that can be exhaled
|
|
|
Tidal volume -
|
Air moved in and out during normal respiration
|
|
|
Residual volume -
|
Air left after maximum exhalation
|
|
|
FEV.1 -
|
Forced Expiration Volume in 1 second
|
|
|
FVC -
|
Forced Vital Capacity
|
|
|
5. What happens to the partial pressure of oxygen and carbon dioxide as they pass through the pulmonary capillaries?
|
O2 & CO2 decrease
|
|
|
6. Identify what causes the oxyhemoglobin curve to shift to the right.
|
Increase temperature, Increase CO2, Decrease pH [Increase H+ (Acidic)-Bohr effect, Increase DPG
|
|
|
Why is this shift beneficial during exercise?
|
Increase capillary O2 utilization
|
|
|
7. What way is oxygen transported in the blood?
|
Hemoglobin
|
|
|
8. What effect would bicarbonate loading have on PH?
|
Raise pH--> Basic (~ 7.49)
|
|
|
9. How would bicarbonate-loading aid an athlete (hypothetically)?
|
Reduce DOMS, Help regulate pH, help CO2 removal
|
|
|
10. When approaching maximal exercise intensity, what happens to tidal volume and breathing frequency?
|
Tidal Volume can decrease slightly due to increased Breathing rate.
|
|
|
11. What is a plausible reason why pulmonary ventilation could be rate-limiting during maximal exercise in an elite athlete?
|
Loss in capillary refill due to time required for transfer.Capillary transit time Therefore not completely saturated w/O2.
|
|
|
12. What environment would cause ventilation to be rate-limiting during exercise?
|
Altitude, Cold, Pollutants (Industrial, pollen, etc.)
|
