Identify the region of human brain which has pneumotaxic centre that alters respiratory rate by reducing the duration of inspiration.

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Medulla

Thalamus

Pons

Cereburm

answer is B.

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Detailed Solution

The pneumotaxic centre alters the respiratory rate by reducing the duration of inspiration. It is located in the pons.
It transmits inhibitory impulses to the inspiratory area. Neural signals from this centre can reduce the duration of inhalation and thereby increase the respiratory rate. The pneumotaxic centre is currently called the pontine respiratory group (PRG).

(1) The medulla oblongata contains the respiratory rhythm centre which controls the basic rhythm of respiration.

(3) The thalamus is a central structure in the forebrain that acts as a relay station for sensory and motor signals. It is not directly involved in the control of respiratory functions.

(4) The cerebrum is the largest part of the brain and is responsible for voluntary activities, sensory perception, memory, and conscious thought. It is not involved in the regulation of respiratory rate.

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