Question: 166: Identify the region of human brain which has pneumotaxic centre that alters respiratory rate by reducing the duration of inspiration.
(1) Medulla
(2) Pons
(3) Thalamus
(4) Cerebrum
Answer: Option (2)
Explanation:
The pneumotaxic centre is a group of neurons involved in the regulation of breathing.
This centre functions by sending inhibitory impulses to the inspiratory centre,
thereby reducing the duration of inspiration and increasing the respiratory rate.
The pneumotaxic centre is located in the pons region of the brainstem.
The medulla contains the respiratory rhythm center that generates the basic breathing pattern.
The thalamus and cerebrum are not directly involved in the control of involuntary respiration.
Therefore, the region of the human brain that contains the pneumotaxic centre is the pons.