1. What is mechanical control in the lungs?
2. What is chemical control in the lungs?
1. stretch receptors in the lungs that set limits on routine resting inhaling and exhaling. It does this to maintain a normal, rythemic, breathing pattern. *automatic
2. The control of co2, pH, and o2. If co2 rises, the pH will fall, and respiration is increased because blood is becoming too acidic.
If the co2 falls, and pH rises, blood isn't acidic enough, so respiration rate will decrease.