epiglottis
The epiglottis is the flap that prevents food and water from entering the trachea.
Phospholipids in the cell membrane prevent water from entering a cell.
Phospholipids
backward movement of epiglotis
The epiglottis is a flap of tissue in the throat that prevents food and liquids from entering the airway when swallowing. It also helps direct food and liquids into the esophagus, guiding them away from the trachea to prevent choking or aspiration.
The cell membrane or cell wall.
The epiglottis normally keeps this from happening.* How The Epiglottis Works:When you swallow, a small flap - called the epiglottis - briefly covers the top of the windpipe (or trachea) so that food goes the right way, into the digestive system, and not the wrong way, into the respiratory tract.The flap can't stay down all the time, or you would not be able to breathe! Sometimes a little food or liquid does get into the windpipe - perhaps if you ingest it very quickly - and that's when you cough to get it out again.When you swallow, the epiglottis should automatically cover the windpipe, so swallowing is a good way to suppress a cough if you are somewhere where you don't want to make a noise...
The casparian strip is a waterproof barrier in the endodermis of plant roots that blocks the passive flow of water and minerals between cells. This ensures selective uptake of essential nutrients and prevents harmful substances from entering the stele.
The epiglottis is a flap of cartilage just above your throat that protects the trachea, which leads to the lungs, safe from anything but air. If anything other than air gets to your lungs, you will die. That's why God, our amazing creator, specially designed the epiglottis to protects us from theses harmful objects. If you accidentally get food or water not going down the esophagus, but instead the epiglottis, the epiglottis and linings of your trachea are very sensitive and your body will cough to get it out. This works most of the time, but if the piece of food is stuck or too big, a medical medical professional will perform the Heimlich maneuver to help you couch it up so can breath.
It's called the 'epiglottis'.
The organ that branches off in front of the esophagus is the pharynx.
The toilet bowl is full of water to create a seal that prevents sewer gases from entering the bathroom and to facilitate the flushing process.