The Hering-Breuer reflex
the respiratory centers
To prevent over inflation of the lungs.
Hering-Breuer reflex
The Hering-Breuer reflex is a protective mechanism that prevents over-inflation of the lungs during breathing. During exercise, as the rate and depth of breathing increase, stretch receptors in the lungs send signals to the brain to regulate respiratory patterns. Although the reflex is less active during intense exercise, it helps maintain appropriate ventilation and prevents damage to lung tissue by signaling when to inhibit further inhalation. This allows for efficient gas exchange while accommodating the increased oxygen demand of the body.
Your ribs.
When you breath, it is not you expanding your lungs directly. It is a muscle called your diaphragm that makes you breath. It is located below your lungs. When you breathe in, your diaphragm pulls down, making more room in your chest, which your lungs then expand to fill up. This expansion leaves more room in them for air, so air rushes in and fills them. The opposite happens when your diaphragm pushes up making less space and your lungs contract, pushing air out. You diaphragm is just a regular muscle. For the same reason that you cannot flex your arm so hard that you tear your arm off, your diaphragm can not flex so hard that it pops you lungs.
The Pupillary Light Reflex and the Corneal Reflex (or Blink Reflex) are two important reflexes because the Light Reflex prevents damage to eye compopents related to over exposure to light and also helps the eye to accommodate visually, when there is less light; The Blink Reflex prevents objects from entering the eye and lubricates the eye. Also, breathing and heart beat are thought to be reflex actions.
Just an uneducated guess, but it may be preventing his diaphragm from expanding downwards, which is how air is drawn into the lungs.
a reflex angle is an angle over 180 degrees.
reflex
Reflex
An obtuse or a reflex angle