When the tongue is flicked out into the air, receptors on the tongue pick up minuscule chemical particles, which are perceived as scent. When the tongue is retracted into its sheath, the tips of the tongue fit neatly into the Jacobson's organ, sending the chemical information that has been gathered through the organ and to the brain, where the information is quickly processed and analyzed so that the snake can act promptly on it.
Matt: CORRECT
Record: 631-529
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