El infraespinoso es un músculo intrínseco de la región del hombro. Forma parte del grupo muscular del manguito rotador. Inserciones: se origina en la fosa infraespinosa de la escápula y se inserta en el tubérculo mayor del húmero. Inervación: nervio supraescapular. Acciones: rotación lateral de la extremidad superior a la altura del hombro. Irrigación sanguínea: arterias supraescapular y circunfleja escapular. By TeachMeSeries Ltd (2026) Fig. 1: los músculos del manguito rotador, que actúan para estabilizar la articulación del hombro. Característica Pro - Modelo en 3D Premium Feature Explore, cut, dissect, annotate and manipulate 3d models to visualize anatomy in interactive and dynamic way. Pasarse a la versión Premium Frequent questions What is the infraespinoso muscle? The infraespinoso is an intrinsic muscle located in the shoulder region, part of the rotator cuff group. It plays a crucial role in shoulder stability and movement. Where does the infraespinoso muscle originate and insert? The infraespinoso muscle originates from the infraspinous fossa of the scapula and inserts onto the greater tubercle of the humerus. This positioning allows it to effectively contribute to shoulder function. What is the primary action of the infraespinoso muscle? The primary action of the infraespinoso muscle is the lateral rotation of the upper limb at the shoulder joint. This movement is essential for various overhead activities. Which nerve innervates the infraespinoso muscle? The infraespinoso muscle is innervated by the suprascapular nerve. This nerve is responsible for transmitting signals that enable muscle contraction. What blood vessels supply the infraespinoso muscle? The infraespinoso muscle receives its blood supply from the suprascapular and circumflex scapular arteries. These vessels ensure the muscle has the necessary nutrients and oxygen for optimal function. Valora este artículo