Question

The apneustic centre increases the depth of___(i)____ by acting directly on the ___(ii)____ centre. The pneumotaxic centre inhibits the ___(iii)____ centre, thus increasing the respiratory rate i.e the duration of inspiration and expiration___(iv)____.

• A. i) $\to$ Expiration, ii) $\to$ Expiratory, iii) $\to$ Inspiratory, iv) $\to$ Increases
• B. i) $\to$ Inspiration, ii) $\to$ Inspiratory, iii) $\to$ Expiration, iv) $\to$ Decreases
• C. i) $\to$ Inspiration, ii) $\to$ Inspiratory, iii) $\to$ Expiratory, iv) $\to$ Decreases
• D. i) $\to$ Expiratory, ii) $\to$ Inspiratory, iii) $\to$ Expiration, iv) $\to$ Increases

Answer 1

The correct option is C

i) $\to$ Inspiration, ii) $\to$ Inspiratory, iii) $\to$ Expiratory, iv) $\to$ Decreases

The apneustic centre increases the depth of inspiration by acting directly on the inspiratory centre. The pneumotaxic centre inhibits the expiratory centre thus increasing the respiratory rate and that is the duration of inspiration and expiration decreases.