The epiglottis directs traffic. It is the flap that covers the larynx to prevent the passage of food and liquids. The glottis Also called the glottic cleft, is the space bâ¦etween the vocal folds & arytenoid cartilages of the larynx where speech takes place.    The epiglottis is the flap of cartilage covered by a membrane that  is attached to the entrance of the larynx. The glottis is part of  the larynx that is made up of the vocal cords.
The cast members of Lean on Me have been in many other movies, so use this list as a starting point to find actors or actresses that you may not be familiar with. Examples include Morgan Freeman and Mike Starr.
His second gold single, Lean on Me, landed at number one R&B and number one pop for three weeks on Billboard's charts in summer 1972. It was included on his Still Bill album which went gold, holding the number one R&B spot for six weeks and hitting number four pop in spring 1972. Lean on Me has became a standard with hit covers by U.K. rock band Mud and Club Nouveau.