In the lungs hemoglobin does not fully saturate with oxygen because at sea level a Po2 of 100 mmhg allows only 98% saturation:    

CO2 is created at rest and in exercise, it is transported for removal:

Resistance is based on blood viscosity, length of conducting tube and vessel radius:

Anaerobic exercise lessens the demand on the buffering system allowing PH regulation to be easily maintained:

Neural influence can override the hearts natural rhythm. Regarding the distribution of neurologic control to the heart, which of the following is most correct:    

Ventilatory threshold is:  

Regarding an ECG exam the S-T segment is a key diagnostic feature that may identify hypoxia or infarction?

Which of the following are true regarding hemoglobin?

At rest , pulmonary control is controlled primarily by the bloods chemical state:    

Regarding ventilation and aerobic endurance which of the following is correct: