The sensory structures associated with the aortic arch and carotid artery are made up of:

$A$: Pneumotaxic centre controls the rate of respiration.
$R$: Primarily,it controls the switch-off point of inspiration.

Select the correct statements regarding Hering-Breuer reflex.
$i$. Stretch receptors of the lungs are stimulated during maximum forceful expiration.
$ii$. Vagus nerves send impulses to the expiratory center.
$iii$. Prevents lungs from inflation to the point of bursting.
$iv$. Controls depth and rhythm of respiration.
$v$. Promotes the lungs for maximum inflation.
Choose the correct option:

Which part of the brain is called the respiratory rhythm centre?

When $CO_2$ concentration in blood increases,breathing becomes

Rate of breathing is controlled by