El escaleno anterior es uno de los músculos escalenos del cuello. Se localiza en un plano más profundo respecto del músculo esternocleidomastoideo, en la cara externa del cuello. Inserciones: se origina en los tubérculos anteriores de las apófisis transversas de C3-C6 y se inserta en el tubérculo escaleno (en el borde interno de la primera costilla). Función: elevación de la primera costilla. La contracción ipsilateral provoca la flexión lateral ipsilateral del cuello, y la contracción bilateral provoca la flexión anterior del cuello. Inervación: ramos anteriores de C5-C6. Irrigación sanguínea: ramificación cervical ascendente de la arteria tiroidea inferior. By TeachMeSeries Ltd (2026) Fig. 1: los músculos escalenos anterior, medio y posterior del cuello. 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 escaleno anterior muscle? The escaleno anterior is one of the scalene muscles located in the neck, positioned deeper than the sternocleidomastoid muscle. It plays a vital role in neck movement and respiration. What are the attachments of the escaleno anterior muscle? The escaleno anterior originates from the anterior tubercles of the transverse processes of the cervical vertebrae C3 to C6 and inserts onto the scalene tubercle on the inner border of the first rib. This specific attachment allows it to assist in elevating the first rib during respiration. What is the primary function of the escaleno anterior? The primary function of the escaleno anterior is to elevate the first rib, which aids in breathing. Additionally, unilateral contraction results in ipsilateral lateral flexion of the neck, while bilateral contraction leads to anterior flexion of the neck. How is the escaleno anterior muscle innervated? The escaleno anterior muscle receives its nerve supply from the anterior rami of the C5 and C6 spinal nerves. This innervation is crucial for its motor function and coordination during neck movements. What is the blood supply to the escaleno anterior muscle? The blood supply to the escaleno anterior is provided by the ascending cervical branch of the inferior thyroid artery. This vascularisation ensures the muscle receives adequate nutrients and oxygen for its function. Rate This Article