Cardiovascular and Respiratory System Function
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Questions and Answers

What is the fractional concentration of CO2 in expired air if FCO2 PA is 3.5%?

0.035

At sea level and dry conditions, what is the partial pressure of CO2 if the fractional concentration is 3.5%?

3.54 kPa

What is the standard temperature in Kelvin for gas calculations?

273 K

What is the volume of 1 mol of gas at standard temperature and pressure (STP)?

<p>22.4 L</p> Signup and view all the answers

What is the gas constant for respiratory gases calculations?

<p>8.31 J K^-1 mol^-1</p> Signup and view all the answers

What does the phospholipid bilayer prevent from passing through the membrane?

<p>Certain molecules</p> Signup and view all the answers

What type of molecules can easily pass through the membrane?

<p>Small, hydrophobic molecules</p> Signup and view all the answers

What does membrane transport consist of?

<p>Active and passive transport</p> Signup and view all the answers

What is the driving force for molecules in chemical transport across a membrane?

<p>Concentration gradient</p> Signup and view all the answers

When does a concentration gradient exist across a membrane?

<p>When a molecule exists in different concentrations on either side of the membrane</p> Signup and view all the answers

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