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Article · Jun 5, 2026 · Citadel Culebra Faculty

How a Snake Actually Breathes

One working lung, a glottis that slides forward to breathe mid-swallow, and a respiratory system that explains a lot of husbandry.

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How a Snake Actually Breathes
Anatomy & PhysiologyBeginner Basics

A snake's respiratory anatomy is strange and elegant: typically one functional lung, a tube-like air sac, and a glottis that lets it keep breathing while swallowing prey larger than its own head. Understanding it makes respiratory illness far easier to catch.

What this resource covers — the single functional lung, the glottis and breathing while eating, why open-mouth breathing is an alarm, and how anatomy drives RI risk.

This is a free entry in the Citadel Culebra Library, expanded continuously by our faculty. The complete write-up is on the way — and members get every new entry first inside Culebra Connect.

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