The imaginary plane that divides the body into upper and lower parts is called the ________ plane

When blood leaves the pulmonary arteries, it enters the:

A) lungs. B) right atrium. C) systemic arteries of the body. D) coronary arteries.

Which of the following is the normal ratio of dead space to tidal volume (VD/VT)?

a. 0.2-0.4 b. 0.4-0.6 c. 0.6-0.8 d. 0.8-1.0