Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

KIN 3600

Lec 24

Respiratory Zone Function Gas exchange
Respiratory Composed of: -Respiratory bronchioles -Alveolar ducts -Alveolar sack -Alveoli
Respiratory Membrane -Two thick membrane – Alveolar & pulmonary Capillary walls
Respiratory Membrane thickness 02-0.5mm
Function of respiratory muscles Pressure difference between air in the lungs & atmosphere
Ventilation (V̇E)
Ventilation (V̇E) Movement in & out of the lungs
Tidal Volume (VT)
Tidal Volume (VT) Amount of air inhaled or exhaled per breath
Ventilatory frequency (V̇f)
Ventilatory frequency (V̇f) How many times your breath per/min
Pressure in lungs v decrease Pressure of air in the atmosphere
Pressure in Lungs ^ air mores out of atmosphere
Taller persons ^ higher ventilation
@ rest No inhale/exhale
Inspiration -Air in -Pressure v decrease below atmospheric pressure
Expiration -Air out -Pressure ^ increase above atmospheric pressure
Calculation of ventilation V̇E = VT • V̇f
Inspiration muscles - Diaphragm - External intercostal muscle - Auxiliary inspiration muscles
Is Inspiration an active or passive process Active process@ rest --> needs energy
Expiration Muscles - Internal. Intercostal muscle - Rectus abdominis muscle - Internal oblique muscle
Is Expiration an active or passive process @ rest expiration is Passive process because elastic recoil @ lungs & rib cage
Dead space ventilation (V̇D)
Dead space ventilation (V̇D) The amount of air ventilating conducting zone of the lungs per-min (Volume Dead Zone)
Alveolar Ventilation (V̇A)
Alveolar Ventilation (V̇A) The amount of air ventilating the respiratory Zone of the lungs per-min
Total Ventilation V̇D + V̇E
Calculation of Dead space & Alveolar ventilation V̇E = Vf • VD
Calculation of Alveolar ventilation @ rest V̇A = Vf rest • (VT rest – VD rest)
Calculation of Dead space @ rest V̇D = V̇E – V̇A
Calculation of Alveolar ventilation @ exercise V̇A = Vf exercise • (VT exercise– VD exercise)
Calculation of Dead space @ exercise V̇D = V̇D exercise – V̇f exercise
Which percent of the ventilated air participated in gas exchange during rest & exercise ? -Rest: 4.2L-min / 60L-min • 100% = ~70% -Exercise: 94.7%
during exercise the respiratory efficiency of ventilation increases
Do respiratory muscles fatigue during exercise? Current evidence suggests that respiratory muscles do fatigue during exercise
Do respiratory muscles adapt to training? -Yes!!! -^ increased oxidative capacity improves respiratory muscle endurance -v reduces work of breathing
Ventilatory failure Gas exchange is not complete
Composition of dry atmosphere air - Oxygen (O2) - Nitrogen (N2) - Carbon Dioxide (CO2)
Oxygen (O2) 20.93%
Nitrogen (N2) 79.04%
Carbon Dioxide (CO2) .03%
Oxygen (O2) Functional concentration 0.2093
Nitrogen (N2) Functional concentration 0.7904%
Carbon Dioxide (CO2) Functional concentration 0.000
Dalton’s Law Total pressure exerted by mixture of gas is equal to the sum of the pressure
Partial pressure (P): the pressure exerted by each individual gas in a mixture of gases
Partial pressure of gasses is directly proportional to their fractional concentration in the mixture of gases
Calculation of Partial pressure Pair = PN2 + PO2 + PCO2
Created by: rmart11