What causes Hering-Breuer reflex?

2021-08-04 Kobe Glover

What causes Hering-Breuer reflex?

The Hering-Breuer reflex is initiated by lung expansion, which excites stretch receptors in the airways. Stimulation of these receptors, which send signals to the medulla by the vagus nerve, shortens inspiratory times as tidal volume (the volume of air inspired) increases, accelerating the frequency of breathing.…

What is Hering-Breuer deflation reflex?

The Hering–Breuer deflation reflex serves to shorten exhalation when the lung is deflated. It is initiated either by stimulation of stretch receptors or stimulation of proprioceptors activated by lung deflation. Like the inflation reflex, impulses from these receptors travel afferently via the vagus.

What is the Hering-Breuer reflex quizlet?

The Hering-Breuer reflex is a decreased frequency of inspiratory effort secondary to sustained distention of the lungs. -It is thought to minimize the work of breathing by inhibiting large tidal volumes. -It is thought to prevent over-distention of the alveoli at large tidal volumes.

How is most oxygen transported in the blood quizlet?

-Most O2 is transported by hemoglobin as oxyhemoglobin (Hb—O2) within red blood cells. -the heme portion of hemoglobin contains four atoms of iron, each capable of binding to a molecule of O2. -oxygen and hemoglobin bind in an easily reversible reaction from form hemoglobin.

Where are chemoreceptors that regulate breathing located quizlet?

The central chemoreceptors are located on the ventral surface of the medulla.

Why is CO2 such a sensitive factor in changing respiration?

Why is CO2 such a sensitive factor in changing respiration? The respiratory centers are more senstive to changes in the partial pressure of carbon dioxide than the partial pressure of oxygen. partial pressure difference of the gas across the respiratory membrane increases.