Module 11 ML-1 Flashcards
Anatomical dead space
amount of air in conducting zone
What is the amount of air in anatomical dead space
150ml
Minute Ventiliation
the total amount of air moved into and out of the lungs per minute
Does minute ventilation include the dead space
Yes
Alveolar Ventilation
the amount of fresh air moved into and out of the lungs per minute this is available for gas exchange with the blood
Why will alveolar ventilation always be less than minute ventilation?
because the dead space volume has to be subtracted from each breath
Alveolar ventilation must match what for homeostasis to be maintained?
metabolism
If tidal volume is lower, frequency is higher and alveolar ventilaition is zero, what is going on?
the person is panting so high frequencu and low TV and alveolar veentilation is 0 because all air stays in the dead space
if TV is higher, frequency is lower, and alveolar ventiliation is higher what is going on
slow deep breaths, low frequency, alvelolar ventiliation is huge because dead space is smaller fraction of each tidal volume
Why don’t we take long deep breaths normally?
at rest we don’t need this much gas exhilation so it increases our work
When a person is in homeostasis what is equal when talking about O2
-net o2 entering the lungs
- o2 entering the blood
-o2 entering the tissues
-o2 burned by cells
True or false; more o2 than needed is carried in systemic arterial blood
true
When a person is in homeostasis when talking about co2 what is equal?
-co2 produced by tissues
-co2 diffusing into blood
-Co2 diffusing into lungs
-co2 breathed into air
What is important in order to balance pH
lots f co2 is maintained in both arterial and venous blood
What are the four physical properties of gases
- collisions with walls determines the pressure
- daltons law
- only unbound molecules exert pressure
-henreys law
