Laryngeal cailage forming complete circle is ?
**Core Concept**
The laryngeal cartilages form the framework of the larynx and play a crucial role in maintaining its structure and function. The laryngeal cartilages are made of hyaline cartilage, which is a type of connective tissue found in the body.
**Why the Correct Answer is Right**
The laryngeal cartilages form a complete circle, also known as the laryngeal ring, which is an essential structure for maintaining the patency of the airway. The cartilages are connected by elastic ligaments and muscles, allowing for flexibility and movement of the larynx during swallowing and breathing. The complete circle of cartilages is formed by the thyroid cartilage, cricoid cartilage, epiglottis, and arytenoid cartilages.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the arytenoid cartilages are not part of the laryngeal ring, but rather are located posterior to the larynx.
**Option B:** This option is incorrect because the cuneiform cartilages are small, leaf-shaped cartilages located in the anterior part of the larynx, but they do not form a complete circle.
**Option C:** This option is incorrect because the corniculate cartilages are small, cone-shaped cartilages located on the top of the arytenoid cartilages, but they do not form a complete circle.
**Clinical Pearl / High-Yield Fact**
The laryngeal cartilages are susceptible to injury during endotracheal intubation, which can lead to subglottic stenosis, a condition characterized by narrowing of the airway below the vocal cords.
**Correct Answer: D. Thyroid cartilage.**