Definition Structure and Functions of Pharynx and Larynx
Before we start learning about the Pharynx and larynx, it is essential to learn what the Pharynx and Larynx. These are the two organs situated in the area around the neck region of a human body. The Pharynx is a part of the alimentary canal, while the Larynx is a portion of the trachea.
The Pharynx is located posterior to the oral and nasal cavities, forming part of the digestive and respiratory systems. It acts as a common channel for swallowing and respiration. The Pharynx is divided into three regions – The nasopharynx, Oropharynx, and Laryngopharynx.
Whereas, the Larynx connects the lower part of the Pharynx with the trachea. It not only acts as a valve to the passage of air but also helps in the process of vocalization and swallowing. The Larynx is divided into three parts – supraglottis, glottis, and subglottis.
Differences between the Pharynx and Larynx
There are several similarities between the Pharynx and the Larynx, yet there are many ways in which these two organs are different from each other. These organs are very essential for the proper functioning of the human respiratory and the digestive system. The table of differences between the Pharynx and Larynx which has been prepared by experts of Vedantu is
Pharynx vs Larynx
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FAQs on Difference Between the Pharynx and the Larynx
1. What is the difference between pharynx and larynx?
The pharynx is a muscular passage for both air and food, while the larynx is a cartilaginous structure that produces sound and allows only air to pass into the trachea.
- Pharynx: Located behind the nose and mouth; common pathway for the respiratory and digestive systems.
- Larynx: Located below the pharynx; part of the respiratory system only.
- The larynx contains vocal cords, but the pharynx does not.
2. What is the function of the pharynx?
The main function of the pharynx is to serve as a common passage for air and food.
- Conducts air from the nasal cavity to the larynx.
- Directs food from the mouth to the esophagus.
- Plays a role in the process of swallowing (deglutition).
3. What is the function of the larynx?
The primary function of the larynx is voice production and protection of the lower respiratory tract.
- Contains vocal cords that produce sound.
- Allows air to pass into the trachea.
- The epiglottis prevents food from entering the airway during swallowing.
4. Where are the pharynx and larynx located?
The pharynx is located behind the nasal and oral cavities, while the larynx lies just below the pharynx at the top of the trachea.
- Pharynx: Extends from the base of the skull to the level of the sixth cervical vertebra.
- Larynx: Situated in the neck, between the pharynx and the trachea.
5. Does the pharynx or larynx help in voice production?
The larynx helps in voice production, not the pharynx.
- The larynx contains vocal folds (vocal cords) that vibrate to produce sound.
- The pharynx acts as a resonance chamber but does not create sound.
6. Is the pharynx part of the respiratory or digestive system?
The pharynx is part of both the respiratory and digestive systems.
- In respiration, it carries air to the larynx.
- In digestion, it passes food to the esophagus.
7. Is the larynx part of the respiratory system only?
Yes, the larynx is part of the respiratory system only.
- It connects the pharynx to the trachea.
- It ensures that only air enters the lower respiratory tract.
- The epiglottis blocks food from entering during swallowing.
8. What are the parts of the pharynx?
The pharynx is divided into three main parts based on location.
- Nasopharynx: Upper part behind the nasal cavity.
- Oropharynx: Middle part behind the oral cavity.
- Laryngopharynx: Lower part that opens into the larynx and esophagus.
9. What are the main structures of the larynx?
The larynx is made up of cartilages, muscles, and vocal cords that support breathing and sound production.
- Thyroid cartilage (forms the Adam’s apple).
- Cricoid cartilage (ring-shaped cartilage below the thyroid cartilage).
- Epiglottis (prevents food entry into airway).
- Vocal cords (produce sound).
10. Why is the epiglottis important in the larynx?
The epiglottis is important because it prevents food and liquid from entering the trachea during swallowing.
- It is a flap of elastic cartilage located above the larynx.
- Closes over the glottis when swallowing occurs.
- Ensures food passes into the esophagus instead of the airway.
