Ruminants - Rumen Physiology - Eructation

4 important questions on Ruminants - Rumen Physiology - Eructation

How is eructation initiated?

Gases stimulate local gas sensors, vagus nerve (afferent) to brain stem causes vagal reflex.

What are the contents of eructation?

CO2, CH4, N2

What is the eructation reflex?

1. Opening of cardia
2. Opening of upper esophageal sphincter
3. Simultaneous inspiration -> inhalation then exhalation of gases
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What leads to the eructation reflex being inhibited?

Froth can cause gas from stimulating sensors and causing bloat

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