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nether, the epiglottis is a flap of tissue that prevents you from chocking its doesn't digest anything
Tendons are the structures that prevents valves from turning inside-out.
The cuticle prevents water from escaping a plant's leaves.
anterior crusciate
A valve
The epiglottis.
Pnicogens means chocking producers. Nitrogen family produces chocking.
The epiglottis is the structure that prevents the entry of food into the respiratory system. It is made of connective tissue.
Cuticle
chocking
heart valves
the ACL (anterior curiae ligament)