Part 5: Short Answer 23. Describe the mechanism of inspiration. 24. What is the effect of increasing carbon dioxide concentration on respiratory rate?

23. The mechanism of inspiration involves the contraction of the diaphragm and external intercostal muscles, which increases the volume of the thoracic cavity and draws air into the lungs.<br /><br />24. Increasing carbon dioxide concentration in the blood leads to an increase in respiratory rate as the body attempts to expel the excess carbon dioxide and maintain homeostasis.