1. Respiratory System # 5 Respiratory control
19 November 2008
Respiratory System # 5
Respiratory control
Respiration and ventilation during exercise
Lab this week: 3 Respiratory Case Studies on website.
Bring calculator and textbook to lab
Test # 3: Monday, 24 November
Coverage is posted to website

2. Cervical spinal cord injury
Figure 13.32
Negative feedback loop for
control of blood gases
Cervical spinal cord injury

3. Figure 13.22

4. Name the components of the negative feedback loop
Figure 13.40
Name the components of the negative feedback loop

5. Respiratory Physiology during Exercise
Figure 13.41
Respiratory Physiology during Exercise
Blood gases and pH change very little except when exercise is intense.
Therefore, changes in minute ventilation are not the result of negative feeback.
How can this be?

6. Experience, learning, modification of motor program, feed forward!
Figure 13.42
Negative feedback operates! But the changes in ventilation at the onset and offset of exercise cannot be explained by negative feedback.
Experience, learning, modification of motor program, feed forward!

7. Figure 13.43
Integrator

8. Board diagram of the response to ascending to high altitude including adaptation to prolonged time at high altitude.
Be able to diagram the response to and changes in blood gases and ventilation for
Holding your breath
Being in a closed room where Oxygen is being depleted by your own breathing,
the response to breathing carbon monoxide as some do who commit suicide.