El cricotiroideo es un músculo intrínseco de la laringe. También se lo conoce como el músculo del cantante, ya que altera el tono de voz y crea un habla enérgica al estirar y tensar los ligamentos vocales. Inserciones: se origina en la cara anterolateral del cartílago cricoides y se inserta en el margen inferior y el cuerno inferior del cartílago tiroides. Acciones: estira y tensa el ligamento vocal. Inervación: nervio laríngeo externo (rama del nervio laríngeo superior) Irrigación sanguínea: arteria cricotiroidea (ramificación de la arteria tiroidea superior). Adobe Stock, Licensed to TeachMeSeries Ltd Fig. 1: Los músculos cricotiroideos, resaltados en rojo. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the cricotiroideo muscle? The cricotiroideo muscle is an intrinsic muscle of the larynx, commonly referred to as the singer's muscle. It plays a crucial role in altering voice pitch by stretching and tensing the vocal ligaments. Where does the cricotiroideo muscle attach? This muscle originates from the anterolateral surface of the cricoid cartilage and inserts into the inferior margin and the inferior horn of the thyroid cartilage. These attachments allow it to effectively modify vocal cord tension. What actions does the cricotiroideo muscle perform? The primary action of the cricotiroideo muscle is to stretch and tense the vocal ligaments, which is essential for voice modulation. This function is particularly important for producing a strong and dynamic speech. Which nerve innervates the cricotiroideo muscle? The cricotiroideo muscle is innervated by the external laryngeal nerve, a branch of the superior laryngeal nerve. This innervation is vital for controlling the muscle's function in voice production. What is the blood supply to the cricotiroideo muscle? The blood supply to the cricotiroideo muscle comes from the cricothyroid artery, which branches off from the superior thyroid artery. This vascular supply is important for the muscle's metabolic needs during vocal activities. Rate This Article