El escaleno medio es uno de los músculos escalenos del cuello. Es el mayor de los tres músculos escalenos y consta de varios vientres musculares que se originan en la columna cervical. Inserciones: se origina en los tubérculos posteriores de las apófisis transversas de C2-C7. Se fija a la parte superior de la primera costilla. Función: elevación de la primera costilla. La contracción ipsilateral provoca la flexión lateral ipsilateral del cuello. Inervación: ramos anteriores de C3-C8. 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. Característica Pro - Modelo en 3D 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 medio muscle? The escaleno medio is the largest of the scalene muscles located in the neck, consisting of multiple muscle bellies. It originates from the cervical vertebrae and plays a key role in neck movement and respiration. What are the attachments of the escaleno medio muscle? The escaleno medio attaches to the posterior tubercles of the transverse processes of cervical vertebrae C2 to C7 and inserts at the upper surface of the first rib. This anatomical positioning is crucial for its function in elevating the first rib. What is the primary function of the escaleno medio muscle? The main function of the escaleno medio is to elevate the first rib during inhalation. Additionally, unilateral contraction leads to ipsilateral lateral flexion of the neck. How is the escaleno medio muscle innervated? The escaleno medio muscle is innervated by the anterior rami of spinal nerves C3 to C8. This innervation is essential for its motor function and coordination during movement. What is the blood supply to the escaleno medio muscle? The blood supply to the escaleno medio comes from the ascending cervical branch of the inferior thyroid artery. This vascularisation supports the muscle's metabolic needs during activity. Valora este artículo