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Lesson 3 Respiratory Physiology. Control of Breathing.
1. Brain stem control of breathing. Medullary respiratory center. Apneustic center.
Pneumotaxic center.
2. Cerebral cortex control of breathing.
3. Chemoreceptors. Central chemoreceptors. Peripheral chemoreceptors.
4. Mechanoreceptors. Lung stretch receptors, joint and muscle receptors, irritant receptors,
and juxtacapillary (j) receptors.
5. Integrative functions
6. Responses to exercise
7. Adaptation to high altitude
Homework
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Draw the scheme of brain stem control of breathing.
Describe localization and role of Inspiratory center.
Describe localization and role of Expiratory center.
Describe localization and role of Apneustic center
Describe localization and role of Pneumotaxic center
Describe the role of cerebral cortex in breath control.
Draw the scheme of response of central chemoreceptors to pH.
What changes in arterial blood composition is detected by peripheral chemoreceptors and
produces an increase in breathing rate
9. List and describe the mechanoreceptors involved in the control of breathing
Practical work
1. Influence muscular work on the breath
2. Functional tests with breath holding