In a healthy adult at rest, what is the normal range for stroke volume index?

What is the normal relationship between the partial pressure of arterial carbon dioxide (PaCO2) and partial pressure of end-tidal CO2 (PETCO2)?

a. PaCO2 and PETCO2 are equal. b. PaCO2 is 10 mm Hg more than PETCO2. c. PaCO2 is 4 to 6 mm Hg less than PETCO2. d. PaCO2 is 4 to 6 mm Hg more than PETCO2.

A(n) ________ microscope uses light, concentrated through a condenser and focused through the object being examined, to project an image.

Fill in the blank(s) with the appropriate word(s).