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Questions and Answers
Describe the anatomical relationship of the larynx during normal breathing versus swallowing.
Describe the anatomical relationship of the larynx during normal breathing versus swallowing.
During normal breathing, the larynx remains in a stable position allowing air passage; during swallowing, it rises as the epiglottis closes off the larynx.
What is the primary function of the epiglottis during swallowing?
What is the primary function of the epiglottis during swallowing?
The epiglottis acts as a lid that covers the opening of the larynx to route food into the esophagus.
What anatomical feature is commonly referred to as the Adam’s apple?
What anatomical feature is commonly referred to as the Adam’s apple?
The Adam's apple is the thyroid cartilage, which is the largest hyaline cartilage of the larynx.
What triggers the cough reflex when a substance other than air enters the larynx?
What triggers the cough reflex when a substance other than air enters the larynx?
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How do the vocal folds contribute to speech production?
How do the vocal folds contribute to speech production?
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Study Notes
Larynx Anatomy and Function
- Located inferior to the pharynx, the larynx is composed of eight rigid hyaline cartilages and the epiglottis, an elastic cartilage flap.
- The largest of the hyaline cartilages is the thyroid cartilage, commonly known as the Adam’s apple, which protrudes anteriorly.
- The epiglottis serves as the “guardian of the airway,” protecting the larynx's superior opening.
- During breathing, the epiglottis permits airflow into the lower respiratory tract.
- When swallowing, the larynx elevates and the epiglottis covers the larynx's opening, directing food into the esophagus and preventing aspiration.
- A cough reflex is triggered if non-air substances enter the larynx, protecting the lungs.
- This reflex is ineffective when a person is unconscious; hence, giving fluids to an unconscious person can lead to choking.
- Vocal folds, or true vocal cords, form from the mucous membrane of the larynx and vibrate as air is expelled, enabling speech.
- The glottis is the slitlike passageway between the vocal folds, playing a crucial role in voice production.
- To palpate the larynx, one can place a hand midway on the anterior neck and feel it rise during swallowing.
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Description
This quiz explores the anatomy of the larynx, focusing on its cartilaginous structure, including the thyroid cartilage and epiglottis. Understand the function of the epiglottis as a protector of the airway and its role during breathing. Test your knowledge of these crucial components of the respiratory system.
