A prepositional phrase is comprised of two parts, a preposition and an object of the preposition. Together, they form the prepositional phrase that is then inserted in a sentence to modify some noun or verb.
The epiglottis is a flap made of elastic cartilage tissue covered with a mucous membrane, attached to the entrance of the larynx. It projects obliquely upwards behind the tongue and the hyoid bone, pointing dorsally. It stands open during breathing, allowing air into the larynx.
In the throat....The Epiglottis is a flap that closes when we swallow and opens back up so we can breathe. It covers the larynx so food cannot travel down the trachea (windpip â¦ e) when we swallow so we do not inhale our food (choke). If you put your hand on your throat and swallow you can feel your larynx (Adams apple) rise up to meet your epiglottis.