Step 1 : Introduction to the question " What is the muscular tube that pushes food from the throat to the stomach? "
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The esophagus is the hollow, muscular tube that passes food and liquid from your throat to your stomach as part of your digestive system.
The primary function of your esophagus is to carry food and liquid from your mouth to your stomach. When you swallow, food and liquid first move from your mouth to your throat (pharynx). A small muscular flap called the epiglottis closes to prevent food and liquid from going down the “wrong pipe” — your windpipe (trachea). Another small flap called the uvula helps prevent liquid from passing upward into your nasal cavity.
At the opening of your upper esophagus, there’s a ring-shaped muscle called the upper esophageal sphincter. Your upper esophageal sphincter senses when food or liquid is coming toward it. When it gets the signal, the sphincter relaxes or opens so that food can enter your esophagus. When there’s no food or liquid in sight, it stays closed.
Once inside your esophagus, waves of muscular contractions (peristalsis) push the food downward. The food passes through your diaphragm and reaches your lower esophagus.
At the opening of your lower esophagus, there’s another ring-shaped muscle called the lower esophageal sphincter (LES). Like the upper esophageal sphincter (UES), it senses when food and liquid are coming. It relaxes and lets the food pass through to your stomach. When no food or liquid is coming its way, it usually stays shut to prevent stomach acid and digestive juices from getting into your esophagus.
More Info:
my.clevelandclinic.org
Step 2 : Answer to the question " What is the muscular tube that pushes food from the throat to the stomach? "
Epiglottis:
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