The elastic at ankles offers a perfect snug fit and a chin protector at the top of the zipper and small flap at the bottom hides the zipper edges and prevents rubbing. (mommyscene.com)
In both speech and singing, we produce sustained vowel sounds by using vibrations of our vocal folds — small flaps of mucous membrane in our voice box (or Adams apple)-- that periodically interrupt the airflow from the lungs. (scientificamerican.com)
Zinreich believes that the sensor significantly improves the precision with which surgeons can excise brain tumours, and enables them to operate through smaller flaps in the skull. (newscientist.com)