The opening of pharynx which opens into larynx is known as?

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Epiglottis....

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The opening of pharynx Which open into larynx is called glottis ....And flap like cartilaginous covering above this opening to cover it during deglutition to avoid entry of food in it through pharynx is called epiglottis.....

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Epiglottis

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Epiglottis

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》Epiglottis is a flap like structure that controls the passage of food and air at the pharynx

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Glottis

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Epiglottis .

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Epiglotis

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Epiglottis

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Epiglottis

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The Opening of Pharynx into Larynx: The Epiglottis

The opening of the pharynx that leads into the larynx is known as the epiglottis. The epiglottis is a leaf-shaped flap of cartilage located at the base of the tongue, in the throat. It serves as a protective mechanism during swallowing to prevent food and liquids from entering the airway and going into the lungs.

Function of the Epiglottis

The primary function of the epiglottis is to cover the opening of the larynx during swallowing. When we swallow, the epiglottis moves downward and the larynx moves upward, causing the epiglottis to cover the entrance to the larynx. This action prevents food and liquid from entering the trachea and lungs, directing them instead towards the esophagus and stomach.

Structure of the Epiglottis

The epiglottis is composed of elastic cartilage, which gives it flexibility and allows it to move. Its shape resembles a leaf, with a stalk-like portion attached to the tongue base and a broad, flat portion at the top. The upper surface of the epiglottis is covered with stratified squamous epithelium, while the lower surface is lined with respiratory epithelium.

Swallowing Process and the Epiglottis

When we swallow, a complex series of muscular contractions occurs. The tongue pushes the food or liquid towards the back of the throat, triggering the swallowing reflex. The soft palate and uvula elevate to close off the nasal cavity, preventing food from entering the nose. Simultaneously, the larynx rises, and the epiglottis folds downward to cover the opening to the larynx. This action ensures that the swallowed material passes through the esophagus and into the stomach while avoiding the airway.

Conclusion

The epiglottis plays a crucial role in protecting the airway during the swallowing process. By covering the opening of the larynx, it prevents food and liquids from entering the trachea and lungs. Understanding the anatomy and function of the epiglottis helps us appreciate the intricate mechanisms involved in swallowing and airway protection.

Answer

Epiglottis

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Epiglottis

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