the.com/trachea
the only tube proud enough to hold itself open with literal cartilage rings.
C-shaped ringsOpen backs let the esophagus bulge during swallowing.
Cilia carpetTiny hairs sweep mucus and dust upward constantly.
LengthRoughly 10 to 12 centimeters in adults.
Cough powerAir can rocket out near 100 miles per hour.
Splits in twoForks into bronchi at the carina ridge.