When $CO_2$ concentration in blood increases,breathing becomes

Where does the stimulation for forced breathing originate in the autonomic muscles?

Pons varoli is characterised by a centre called $:-$

The pneumotaxic centre in the body is located in the:

What happens to respiration when the concentration of $CO_2$ increases in the blood?

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: