Regarding the laryngeal cartilages and their articulations, all of the following statements are true EXCEPT:

## Laryngeal Cartilages & Articulations ### Anatomy of Key Articulations | Joint/Articulation | Type | Cartilages Involved | Movement | Ligament | | --- | --- | --- | --- | --- | | Cricoarytenoid | Synovial (saddle/ellipsoid) | Cricoid + Arytenoid | Rotation + sliding | Cricoarytenoid ligament | | Cricothyroid | Synovial (hinge) | Cricoid + Thyroid | Tilting (forward/backward) | Cricothyroid ligament | | Epiglottis-Thyroid | Fibrous (elastic ligament) | Epiglottis + Thyroid | No true joint | Thyroepiglottic ligament | ### Why Option 3 is WRONG **Key Point:** The epiglottis **does NOT articulate with the thyroid cartilage via a true synovial joint**. Instead, it is connected by the **thyroepiglottic ligament**, which is a fibrous elastic ligament—not a synovial articulation. **High-Yield:** The epiglottis is attached to: 1. **Thyroepiglottic ligament** — connects to thyroid cartilage (fibrous, not synovial) 2. **Hyoepiglottic ligament** — connects to hyoid bone 3. **Aryepiglottic folds** — muscular folds connecting to arytenoids **Clinical Pearl:** The epiglottis is elastic cartilage (not hyaline), allowing it to flex and fold during swallowing. Its lack of a rigid synovial joint with the thyroid permits this mobility. ### Verification of Other Options - **Option 0 (Correct):** The cricoarytenoid joint is a synovial saddle/ellipsoid joint permitting both rotation (abduction/adduction of cords) and sliding (anteroposterior movement) of the arytenoids. - **Option 1 (Correct):** The cricothyroid joint is a true synovial hinge joint allowing tilting of the thyroid cartilage, which tenses the vocal cords. - **Option 2 (Correct):** The arytenoid cartilages are stabilized on the cricoid by the cricoarytenoid ligament (posterior and lateral portions). **Mnemonic:** **"ECT"** — **E**piglottis (elastic cartilage, fibrous attachment), **C**ricothyroid (synovial hinge), **C**ricoarytenoid (synovial saddle). [cite:Gray's Anatomy 42e Ch 34; Clinically Oriented Anatomy 8e Ch 8]