Which of the following is not true of the respiratory tract from the medium bronchi to the alveoli?

You have a track that has a static deflection of 0.20 in. What speed should you limit traffic to keep the deflection below 0.25 in.? The car wheels are all 36 in. in diameter. Submit your scanned in answer.

What is the maximum moment in the rail for a track with a single wheel load of 39000 lb, 132 rail with properties shown, track stiffness = 3000 lb/in/in, steel rail modulus = 30,000,000? Give answer in lb-in.   

What is the station of the point of the switch for the #15 frog?  

  Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital capacity is 4700 mL; and your dead air space is 150 mL.  If you went snorkeling you would need to increase your breathing rate to maintain the alveolar ventilation rate.  This is because of the increase of 

Each hemoglobin molecule can transport up to _____ oxygen molecules.

Antigen-presenting cells usually display processed antigens to T cells in the

If compliance increases, lung expansion is

Surfactant

When HCO3-  (bicarbonate) diffuses out of the red blood cells into the plasma in systemic capillaries, ____ diffuses into the RBCs to replace it.