Compared to atmospheric air the partial pressure of o2 in the alveoli is higher or lower and the partial pressure of co2 in the alveoli is higher or lower

Alveolar pressure has the following characteristics (select all that apply): O It is always a negative pressure relative to atmospheric pressure. As the volume of the lungs decreases, the alveolar pressure within the lungs decreases. OAs the volume of the lungs increases, the alveolar pressure within the lungs decreases. OIt can be a negative pressure or a positive pressure relative to atmospheric pressure. O It is the pressure within the space between the parietal and visceral pleura.

Which of the following lung volumes can be measured using spirometry?  expiratory reserve volume  tidal volume  inspiratory reserve volume residual volume vital capacity

The PO2 in the alveolar space is [ Choose than the PO2 in the capillaries entering the alveoli. [Choose ) less than greater than equal to 02 the alveolar capillaries. leaves enters The PCO2 in the alveolar space is than the PC02 in the capillaries entering the alveoli. [ Choose ] CO2 the alveolar capillaries. [ Choose The PO2 in the tissues is than the PO2 in the capillaries entering the tissues. [ Choose ) 02 the tissue capillaries. [ Choose The PCO2 in the tissues is than [ Choose ) the PC02 in the capillaries entering the tissues. CO2 the tissue capillaries. [ Choose ) > > > > >

which of the following are true of surfactant? pick two answers: increases surface tension, found in the alveoli, increases pulmonary compliance, necessary for gas exchange.

Which of the following influence the diffusion of oxygen across the alveolar membrane? the concentration of oxygen in the lungs the concentration of carbon dioxide in the blood the pressure of oxygen being delivered to the lungs the pressure of exhalation of the lungs

Expired air considered as a whole (not just the last 10 mL) is about 15.3% O2 and 4.2% CO2.  Why would these values differ from the ones for alveolar air?

Describe the work of the diaphragm in ventilation.

A patient has a tidal volume of 500ml, a breathing rate of 16 breaths/mm, a dead space volume of 150ml, and FRC (functional residual capacity) of 3 liters. Minute ventilation for this patient would be:

Describe the effects of Increasing frequency vs tidal volume on minute ventilation and alveolar ventilation.    I'm confused about what type of effects it will cause.